Search results for 'Symmetry (Physics' (try it on Scholar)

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  1. A. Zee (1986). Fearful Symmetry: The Search for Beauty in Modern Physics. Princeton University Press.
    Fearful Symmetry brings the incredible discoveries of contemporary physics within everyone's grasp. A. Zee, a distinguished physicist and skillful expositor, tells the exciting story of how today's theoretical physicists are following Einstein in their search for the beauty and simplicity of Nature. Animated by a sense of reverence and whimsy, the book describes the majestic sweep and accomplishments of twentieth-century physics. In the end, we stand in awe before the grand vision of modern physics--one of the greatest chapters in (...)
     
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  2.  66
    E. H. Hutten (1970). Symmetry Physics and Information Theory. Diogenes 18 (72):1-21.
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  3.  12
    Joe Rosen (1990). Fundamental Manifestations of Symmetry in Physics. Foundations of Physics 20 (3):283-307.
    Five fundamental manifestations of symmetry in physics—reproducibility as symmetry, predictability as symmetry, symmetry of evolution of isolated physical systems, symmetry of states of physical systems, and gauge symmetry—are investigated for their essential meaning and physical significance. The approach is conceptual, to the complete exclusion of mathematical formalism.
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  4.  4
    Helmut Rauch (2012). Quantum Physics with Neutrons: From Spinor Symmetry to Kochen-Specker Phenomena. [REVIEW] Foundations of Physics 42 (1):153-172.
    In 1974 perfect crystal interferometry has been developed and immediately afterwards the 4π-symmetry of spinor wave-functions has been verified. The new method opened a new access to the observation of intrinsic quantum phenomena. Spin-superposition, quantum state reconstruction and quantum beat effects are examples of such investigations. In this connection efforts have been made to separate and measure various dynamical and geometrical phases. Non-cyclic and non-adiabatic topological phases have been identified and their stability against various fluctuations and dissipative forces has (...)
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  5.  41
    P. Kosso (1999). Symmetry Arguments in Physics. Studies in History and Philosophy of Science Part A 30 (3):479-492.
    Physicists often appeal to the beauty of a theory as a way to judge its credibility, and the most prevalent component of this beauty is symmetry. This paper describes the role and structure of symmetry arguments in physics. It demonstrates that the epistemic authority of an appeal to symmetry is based on empirical evidence and is independent of any aesthetic judgment. Furthermore, symmetry in nature is not evidence of design. Just the opposite, symmetry indicates a (...)
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  6.  8
    Cheng-Shi Liu (2011). Trial Equation Method Based on Symmetry and Applications to Nonlinear Equations Arising in Mathematical Physics. Foundations of Physics 41 (5):793-804.
    To find exact traveling wave solutions to nonlinear evolution equations, we propose a method combining symmetry properties with trial polynomial solution to nonlinear ordinary differential equations. By the method, we obtain some exact traveling wave solutions to the Burgers-KdV equations and a kind of reaction-diffusion equations with high order nonlinear terms. As a result, we prove that the Burgers-KdV equation does not have the real solution in the form a 0+a 1tan ξ+a 2tan 2 ξ, which indicates that some (...)
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  7.  13
    Anthony J. Leggett & Fernando Sols (1991). On the Concept of Spontaneously Broken Gauge Symmetry in Condensed Matter Physics. Foundations of Physics 21 (3):353-364.
    We discuss the concept of spontaneous breaking of gauge symmetry in super-conductors and superfluids and, in particular, the circumstances under which the absolute phase of a superfluid can be physically meaningful and experimentally relevant. We argue that the study of this question pushes us toward the frontiers of what we understand about the quantum measurement process, and underline the need for a new theoretical framework that keeps pace with modern technological capabilities.
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  8.  83
    David John Baker (2010). Symmetry and the Metaphysics of Physics. Philosophy Compass 5 (12):1157-1166.
    The widely held picture of dynamical symmetry as surplus structure in a physical theory has many metaphysical applications. Here, I focus on its relevance to the question of which quantities in a theory represent fundamental natural properties.
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  9.  78
    Jochen Kluve (2004). Explanation: Theoretical Approaches and Applications (Kluwer, 2001). Current Interests Include the Relation Between Logic and Physics Taking Gödel as a Prime Example, a Philosophical Analysis of Biophysical Experimentation and the Emergence of the Modern Notion of Symmetry. Foundations of Science 9:103-104.
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  10.  49
    Brigitte Falkenburg (1988). The Unifying Role of Symmetry Principles in Particle Physics. Ratio 1 (2):113-134.
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  11.  8
    Arianna Borrelli (2015). The Making of an Intrinsic Property: “Symmetry Heuristics” in Early Particle Physics. Studies in History and Philosophy of Science Part A 50:59-70.
  12.  10
    Joseph Rosen (1997). Response to Hartshorne Concerning Symmetry and Asymmetry in Physics. Process Studies 26 (3/4):318-323.
  13.  2
    James Mcallister (2001). Fearful Symmetry: The Search for Beauty in Modern Physics by A. Zee. [REVIEW] Isis: A Journal of the History of Science 92:130-131.
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  14.  9
    J. W. McAllister, A. Zee, Fearful Symmetry: The Search for Beauty in Modern Physics (Princeton, N.J.: Princeton University Press, 1999).
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  15. M. A. Harrison (1971). Choudhury A. K. And Basu M. S.. On Detection of Group Invariance or Total Symmetry of a Boolean Function. Indian Journal of Physics, Vol. 36 , Pp. 31–42; Also Proceedings of the Indian Association for the Cultivation of Science, Vol. 45 , Pp. 31–42.Sheng C. L.. Detection of Totally Symmetric Boolean Functions. IEEE Transactions on Electronic Computers, Vol. EC-14 , Pp. 924–926.Choudhury A. K. And Das S. R.. Comment on “Detection of Totally Symmetric Boolean Functions.” IEEE Transactions on Electronic Computers, Vol. EC-15 , P. 813.Sheno C. L.. Author's Reply. IEEE Transactions on Electronic Computers, Vol. EC-15 , P. 813. [REVIEW] Journal of Symbolic Logic 36 (4):694-695.
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  16. Katherine A. Brading & Elena Castellani (eds.) (2003). Symmetries in Physics: Philosophical Reflections. Cambridge University Press.
    Highlighting main issues and controversies, this book brings together current philosophical discussions of symmetry in physics to provide an introduction to the subject for physicists and philosophers. The contributors cover all the fundamental symmetries of modern physics, such as CPT and permutation symmetry, as well as discussing symmetry-breaking and general interpretational issues. Classic texts are followed by new review articles and shorter commentaries for each topic. Suitable for courses on the foundations of physics, philosophy of physics and (...)
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  17.  85
    Dean Rickles (2013). Mirror Symmetry and Other Miracles in Superstring Theory. Foundations of Physics 43 (1):54-80.
    The dominance of string theory in the research landscape of quantum gravity physics (despite any direct experimental evidence) can, I think, be justified in a variety of ways. Here I focus on an argument from mathematical fertility, broadly similar to Hilary Putnam’s ‘no miracles argument’ that, I argue, many string theorists in fact espouse in some form or other. String theory has generated many surprising, useful, and well-confirmed mathematical ‘predictions’—here I focus on mirror symmetry and the mirror theorem. These (...)
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  18.  19
    Timothy H. Boyer (2012). The Blackbody Radiation Spectrum Follows From Zero-Point Radiation and the Structure of Relativistic Spacetime in Classical Physics. Foundations of Physics 42 (5):595-614.
    The analysis of this article is entirely within classical physics. Any attempt to describe nature within classical physics requires the presence of Lorentz-invariant classical electromagnetic zero-point radiation so as to account for the Casimir forces between parallel conducting plates at low temperatures. Furthermore, conformal symmetry carries solutions of Maxwell’s equations into solutions. In an inertial frame, conformal symmetry leaves zero-point radiation invariant and does not connect it to non-zero-temperature; time-dilating conformal transformations carry the Lorentz-invariant zero-point radiation spectrum into (...)
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  19.  10
    Michael Stöltzner (2014). Higgs Models and Other Stories About Mass Generation. Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 45 (2):369-386.
    The paper studies the topography of the model landscape of the physics in the Higgs sector both within the Standard Model of Elementary Particle Physics and beyond in the months before the discovery of a SM Higgs boson. At first glance, this landscape appears fragmented into a large number of different models and research communities. But it also clusters around certain guiding ideas, among them supersymmetry or dynamical symmetry breaking, in which representative and narrative features of the models are (...)
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  20. Matt Farr & Alexander Reutlinger (2013). A Relic of a Bygone Age? Causation, Time Symmetry and the Directionality Argument. Erkenntnis 78 (2):215-235.
    Bertrand Russell famously argued that causation is not part of the fundamental physical description of the world, describing the notion of cause as “a relic of a bygone age”. This paper assesses one of Russell’s arguments for this conclusion: the ‘Directionality Argument’, which holds that the time symmetry of fundamental physics is inconsistent with the time asymmetry of causation. We claim that the coherence and success of the Directionality Argument crucially depends on the proper interpretation of the ‘ time (...)
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  21.  16
    Karen Crowther (2015). Decoupling Emergence and Reduction in Physics. European Journal for Philosophy of Science 5 (3):419-445.
    An effective theory in physics is one that is supposed to apply only at a given length scale; the framework of effective field theory describes a ‘tower’ of theories each applying at different length scales, where each ‘level’ up is a shorter-scale theory. Owing to subtlety regarding the use and necessity of EFTs, a conception of emergence defined in terms of reduction is irrelevant. I present a case for decoupling emergence and reduction in the philosophy of physics. This paper develops (...)
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  22.  14
    Noson S. Yanofsky & Mark Zelcer (forthcoming). The Role of Symmetry in Mathematics. Foundations of Science:1-21.
    Over the past few decades the notion of symmetry has played a major role in physics and in the philosophy of physics. Philosophers have used symmetry to discuss the ontology and seeming objectivity of the laws of physics. We introduce several notions of symmetry in mathematics and explain how they can also be used in resolving different problems in the philosophy of mathematics. We use symmetry to discuss the objectivity of mathematics, the role of mathematical objects, (...)
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  23. Aharon Kantorovich (2009). Ontic Structuralism and the Symmetries of Particle Physics. Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 40 (1):73 - 84.
    According to structural realism, in mature science there is structural continuity along theoretical change. A major counterexample to this thesis is the transition from the Eightfold Way to the Standard Model in particle physics. Nevertheless, the notion of structure is significantly important in comprehending the theoretical picture of particle physics, where particles change and undergo transmutations, while the only thing which remains unchanged is the basic structure, i.e. the symmetry group which controls the transmutations. This kind of view agrees (...)
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  24.  65
    Elena Castellani (2002). Symmetry, Quantum Mechanics, and Beyond. Foundations of Science 7 (1-2):181-196.
    The relevance of symmetry to today's physics is a widely acknowledged fact. A significant part of recent physical inquiry – especially the physics concerned with investigating the fundamentalbuilding blocks of nature – is grounded on symmetry principles andtheir many and far-reaching consequences. But where these symmetries come from and what their real meaning is are open questions, at the center of a developing debate among physicists and philosophers of science. To tackle the problems arising in considering the (...) issue is the main purpose of this paper. Starting with briefly recalling the bases for the discussion – how symmetry enters and operates in physics, its special effectiveness in the quantum domain and the many relevant functions it performs (Sections 1–3), the paper then focus on the general interpretative questions that arise and the sorts of answers that have been given (Section 4). (shrink)
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  25.  80
    Jeremy Butterfield & John Earman (eds.) (2007). Philosophy of Physics. Elsevier.
    The ambition of this volume is twofold: to provide a comprehensive overview of the field and to serve as an indispensable reference work for anyone who wants to work in it. For example, any philosopher who hopes to make a contribution to the topic of the classical-quantum correspondence will have to begin by consulting Klaas Landsman’s chapter. The organization of this volume, as well as the choice of topics, is based on the conviction that the important problems in the philosophy (...)
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  26.  8
    John Earman & Jeremy Butterfield (eds.) (2007). Philosophy of Physics. Elsevier.
    The ambition of this volume is twofold: to provide a comprehensive overview of the field and to serve as an indispensable reference work for anyone who wants to work in it. For example, any philosopher who hopes to make a contribution to the topic of the classical-quantum correspondence will have to begin by consulting Klaas Landsman’s chapter. The organization of this volume, as well as the choice of topics, is based on the conviction that the important problems in the philosophy (...)
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  27.  12
    J. R. Leibowitz (2008). Hidden Harmony: The Connected Worlds of Physics and Art. Johns Hopkins University Press.
    Most "art and science" books focus on the science of perspective or the psychology of perception. Hidden Harmony does not. Instead, the book addresses the surprising common ground between physics and art from a novel and personal perspective. Viewing the two disciplines as creative processes, J. R. Leibowitz supplements existing and original research with illustrations to demonstrate that physics and art share guiding aesthetics and compositional demands and to show how each speaks meaningfully to the other. Leibowitz widens our experience (...)
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  28.  85
    Simon Saunders (2003). Physics and Leibniz's Principles. In Katherine Brading & Elena Castellani (eds.), Symmetries in Physics: Philosophical Reflections. Cambridge University Press 289--307.
    It is shown that the Hilbert-Bernays-Quine principle of identity of indiscernibles applies uniformly to all the contentious cases of symmetries in physics, including permutation symmetry in classical and quantum mechanics. It follows that there is no special problem with the notion of objecthood in physics. Leibniz's principle of sufficient reason is considered as well; this too applies uniformly. But given the new principle of identity, it no longer implies that space, or atoms, are unreal.
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  29.  34
    Michele Ginammi (2016). Avoiding Reification: Heuristic Effectiveness of Mathematics and the Prediction of the Omega Minus Particle. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 53:20-27.
    According to Steiner (1998), in contemporary physics new important discoveries are often obtained by means of strategies which rely on purely formal mathematical considerations. In such discoveries, mathematics seems to have a peculiar and controversial role, which apparently cannot be accounted for by means of standard methodological criteria. M. Gell-Mann and Y. Ne׳eman׳s prediction of the Ω− particle is usually considered a typical example of application of this kind of strategy. According to Bangu (2008), this prediction is apparently based on (...)
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  30.  94
    David J. Foulis (2007). Effects, Observables, States, and Symmetries in Physics. Foundations of Physics 37 (10):1421-1446.
    We show how effect algebras arise in physics and how they can be used to tie together the observables, states and symmetries employed in the study of physical systems. We introduce and study the unifying notion of an effect-observable-state-symmetry-system (EOSS-system) and give both classical and quantum-mechanical examples of EOSS-systems.
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  31.  85
    M. A. Oliver (1991). The Reconciliation of Physics with Cosmology. Foundations of Physics 21 (6):665-689.
    Astronomical observations of redshifts and the cosmic background radiation show that there is a local frame of reference relative to which the solar system has a well-defined velocity. Also, in cosmology the cosmological principle implies the existence of cosmic time and unique local reference frames at all spacetime points. On the other hand, in a fundamental postulate, the theory of special relativity excludes the possibility of the velocity of the Earth from entering into theories of local physics.The theory put forward (...)
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  32.  31
    Patrick Suppes (2000). Invariance, Symmetry and Meaning. Foundations of Physics 30 (10):1569-1585.
    The role of the concept of invariance in physics and geometry is analyzed, with attention to the closely connected concepts of symmetry and objective meaning. The question of why the fundamental equations of physical theories are not invariant, but only covariant, is examined in some detail. The last part of the paper focuses on the surprising example of entropy as a complete invariant in ergodic theory for any two ergodic processes that are isomorphic in the measure-theoretic sense.
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  33.  40
    N. P. Landsman (2013). Spontaneous Symmetry Breaking in Quantum Systems: Emergence or Reduction? Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 44 (4):379-394.
    Beginning with Anderson , spontaneous symmetry breaking in infinite quantum systems is often put forward as an example of emergence in physics, since in theory no finite system should display it. Even the correspondence between theory and reality is at stake here, since numerous real materials show ssb in their ground states , although they are finite. Thus against what is sometimes called ‘Earman's Principle’, a genuine physical effect seems theoretically recovered only in some idealisation , disappearing as soon (...)
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  34.  24
    Gerhard W. Bruhn (2008). On the Non-Lorentz-Invariance of M.W. Evans' O(3)-Symmetry Law. Foundations of Physics 38 (1):3-6.
    In 1992 M.W. Evans proposed the O(3) symmetry of electromagnetic fields by adding a constant longitudinal magnetic field to the well-known transverse electric and magnetic fields of circularly polarized plane waves, such that certain cyclic relations of a so-called O(3) symmetry are fulfilled. Since then M.W. Evans has elevated this O(3) symmetry to the status of a new law of electromagnetics. As a law of physics must be invariant under admissible coordinate transforms, namely Lorentz transforms, in 2000 (...)
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  35.  4
    J. P. Hsu (1976). New Four-Dimensional Symmetry. Foundations of Physics 6 (3):317-339.
    We propose a new picture of nature in which there are only two fundamental universal constantsè ē (≡e/c) andh(≡ħ/c). Our theory is developed within the framework of a new four-dimensional symmetry which is constructed on the basis of the Poincaré-Einstein principle of relativity for the laws of physics and the Newtonian concept of time. We obtain a new space-light transformation law, a velocity-addition law, and so on. In this symmetry scheme, the speed of light is constant and is (...)
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  36. Stephen Blaha (2010). The Standard Model's Form Derived From Operator Logic, Superluminal Transformations and Gl(16). Pingree-Hill Pub..
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  37. Katherine Brading (2002). Symmetries, Conservation Laws, and Noether's Variational Problem.
     
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  38. Julius Järnåker (1970). The Double Solution of the Theory of Relativity. [Uppsala,Almqvist & Wiksell.
     
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  39. H. B. Klepp (1968). Space-Time as a Dual-Three-Dimensional Continuum. Bergen, Royal Norwegian Naval Academy.
     
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  40. H. Muirhead (1973). The Special Theory of Relativity. New York,Wiley.
     
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  41. John Earman (2004). Laws, Symmetry, and Symmetry Breaking: Invariance, Conservation Principles, and Objectivity. Philosophy of Science 71 (5):1227--1241.
    Given its importance in modern physics, philosophers of science have paid surprisingly little attention to the subject of symmetries and invariances, and they have largely neglected the subtopic of symmetry breaking. I illustrate how the topic of laws and symmetries brings into fruitful interaction technical issues in physics and mathematics with both methodological issues in philosophy of science, such as the status of laws of physics, and metaphysical issues, such as the nature of objectivity.
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  42.  52
    S. Dasgupta (2016). Symmetry as an Epistemic Notion. British Journal for the Philosophy of Science 67 (3):837-878.
    Symmetries in physics are a guide to reality. That much is well known. But what is less well known is why symmetry is a guide to reality. What justifies inferences that draw conclusions about reality from premises about symmetries? I argue that answering this question reveals that symmetry is an epistemic notion twice over. First, these inferences must proceed via epistemic lemmas: premises about symmetries in the first instance justify epistemic lemmas about our powers of detection, and only (...)
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  43. Otávio Bueno (2006). The Methodological Character of Symmetry Principles. Abstracta 3 (1):3-28.
    In this paper, I argue that symmetry principles in physics (in particular, in quantum mechanics) have a methodological character, rather than an ontological or an epistemological one. First, I provide a framework to address three related issues regarding the notion of symmetry: (i) how the notion can be characterized; (ii) one way of discussing the nature of symmetry principles, and (iii) a tentative account of some types of symmetry in physics. To illustrate how the framework functions, (...)
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  44.  58
    Simon Friederich, Robert Harlander & Koray Karaca (2014). Philosophical Perspectives on Ad Hoc Hypotheses and the Higgs Mechanism. Synthese 191 (16):3897-3917.
    We examine physicists’ charge of ad hocness against the Higgs mechanism in the standard model of elementary particle physics. We argue that even though this charge never rested on a clear-cut and well-entrenched definition of “ad hoc”, it is based on conceptual and methodological assumptions and principles that are well-founded elements of the scientific practice of high-energy particle physics. We further evaluate the implications of the recent discovery of a Higgs-like particle at the CERN’s Large Hadron Collider for the charge (...)
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  45.  93
    John Earman (2004). Curie's Principle and Spontaneous Symmetry Breaking. International Studies in the Philosophy of Science 18 (2 & 3):173 – 198.
    In 1894 Pierre Curie announced what has come to be known as Curie's Principle: the asymmetry of effects must be found in their causes. In the same publication Curie discussed a key feature of what later came to be known as spontaneous symmetry breaking: the phenomena generally do not exhibit the symmetries of the laws that govern them. Philosophers have long been interested in the meaning and status of Curie's Principle. Only comparatively recently have they begun to delve into (...)
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  46. David John Baker & Hans Halvorson (2013). How is Spontaneous Symmetry Breaking Possible? Understanding Wigner's Theorem in Light of Unitary Inequivalence. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 44 (4):464-469.
    We pose and resolve a puzzle about spontaneous symmetry breaking in the quantum theory of infinite systems. For a symmetry to be spontaneously broken, it must not be implementable by a unitary operator in a ground state's GNS representation. But Wigner's theorem guarantees that any symmetry's action on states is given by a unitary operator. How can this unitary operator fail to implement the symmetry in the GNS representation? We show how it is possible for a (...)
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  47.  9
    Shamik Dasgupta (2016). Symmetry as an Epistemic Notion. British Journal for the Philosophy of Science 67 (3):837-878.
    Symmetries in physics are a guide to reality. That much is well known. But what is less well known is why symmetry is a guide to reality. What justifies inferences that draw conclusions about reality from premises about symmetries? I argue that answering this question reveals that symmetry is an epistemic notion twice over. First, these inferences must proceed via epistemic lemmas: premises about symmetries in the first instance justify epistemic lemmas about our powers of detection, and only (...)
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  48.  75
    Gordon Belot (2013). Symmetry and Equivalence. In Robert Batterman (ed.), The Oxford Handbook of Philosophy of Physics. Oxford University Press 318-339.
    This paper is concerned with the relation between two notions: that of two solutions or models of a theory being related by a symmetry of the theory and that of solutions or models being physically equivalent. A number of authors have recently discussed this relation, some taking an optimistic view, on which there is a suitable concept of the symmetry of a theory relative to which these two notions coincide, others taking a pessimistic view, on which there is (...)
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  49.  48
    John Earman (2004). Laws, Symmetry, and Symmetry Breaking: Invariance, Conservation Principles, and Objectivity. Philosophy of Science 71 (5):1227-1241.
    Given its importance in modern physics, philosophers of science have paid surprisingly little attention to the subject of symmetries and invariances, and they have largely neglected the subtopic of symmetry breaking. I illustrate how the topic of laws and symmetries brings into fruitful interaction technical issues in physics and mathematics with both methodological issues in philosophy of science, such as the status of laws of physics, and metaphysical issues, such as the nature of objectivity.
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  50. Yuri Balashov (2002). What is a Law of Nature? The Broken-Symmetry Story. Southern Journal of Philosophy 40 (4):459-473.
    I argue that the contemporary interplay of cosmology and particle physics in their joint effort to understand the processes at work during the first moments of the big bang has important implications for understanding the nature of lawhood. I focus on the phenomenon of spontaneous symmetry breaking responsible for generating the masses of certain particles. This phenomenon presents problems for the currently fashionable Dretske-Tooley-Armstrong theory and strongly favors a rival nomic ontology of causal powers.
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