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Nicholas Teh [12]Nicholas J. Teh [8]
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Nicholas Teh
University of Notre Dame
  1.  73
    Comparing Dualities and Gauge Symmetries.Sebastian De Haro, Nicholas Teh & Jeremy N. Butterfield - 2017 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 59:68-80.
    We discuss some aspects of the relation between dualities and gauge symmetries. Both of these ideas are of course multi-faceted, and we confine ourselves to making two points. Both points are about dualities in string theory, and both have the ‘flavour’ that two dual theories are ‘closer in content’ than you might think. For both points, we adopt a simple conception of a duality as an ‘isomorphism’ between theories: more precisely, as appropriate bijections between the two theories’ sets of states (...)
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  2.  44
    Holography and Emergence.Nicholas J. Teh - 2013 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 44 (3):300-311.
    In this paper, I discuss one form of the idea that spacetime and gravity might ‘emerge’ from quantum theory, i.e. via a holographic duality, and in particular via AdS/CFT duality. I begin by giving a survey of the general notion of duality, as well as its connection to emergence. I then review the AdS/CFT duality and proceed to discuss emergence in this context. We will see that it is difficult to find compelling arguments for the emergence of full quantum gravity (...)
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  3.  80
    Theoretical Equivalence in Classical Mechanics and its Relationship to Duality.Nicholas J. Teh & Dimitris Tsementzis - 2017 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 59:44-54.
    As a prolegomenon to understanding the sense in which dualities are theoretical equivalences, we investigate the intuitive `equivalence' of hyper-regular Lagrangian and Hamiltonian classical mechanics. We show that the symplectification of these theories provides a sense in which they are isomorphic, and mutually and canonically definable through an analog of `common definitional extension'.
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  4. Neo-Aristotelian Perspectives on Contemporary Science.William M. R. Simpson, Robert Charles Koons & Nicholas Teh (eds.) - 2017 - Routledge.
    The last two decades have seen two significant trends emerging within the philosophy of science: the rapid development and focus on the philosophy of the specialised sciences, and a resurgence of Aristotelian metaphysics, much of which is concerned with the possibility of emergence, as well as the ontological status and indispensability of dispositions and powers in science. Despite these recent trends, few Aristotelian metaphysicians have engaged directly with the philosophy of the specialised sciences. Additionally, the relationship between fundamental Aristotelian concepts—such (...)
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  5.  73
    Categorical Generalization and Physical Structuralism: Figure 1.Raymond Lal & Nicholas Teh - 2017 - British Journal for the Philosophy of Science 68 (1).
    Category theory has become central to certain aspects of theoretical physics. Bain has recently argued that this has significance for ontic structural realism. We argue against this claim. In so doing, we uncover two pervasive forms of category-theoretic generalization. We call these ‘generalization by duality’ and ‘generalization by categorifying physical processes’. We describe in detail how these arise, and explain their significance using detailed examples. We show that their significance is two-fold: the articulation of high-level physical concepts, and the generation (...)
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  6.  39
    Recovering Recovery: On the Relationship Between Gauge Symmetry and Trautman Recovery.Nicholas Teh - 2018 - Philosophy of Science 85 (2):201-224.
    This article uncovers a foundational relationship between the ‘gauge symmetry’ of a Newton-Cartan theory and the celebrated Trautman Recovery Theorem and explores its implications for recent philosophical work on Newton-Cartan gravitation.
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  7.  45
    Galileo’s Gauge: Understanding the Empirical Significance of Gauge Symmetry.Nicholas Teh - 2016 - Philosophy of Science 83 (1):93-118.
    This article investigates and resolves the question whether gauge symmetry can display analogs of the famous Galileo’s ship scenario. In doing so, it builds on and clarifies the work of Greaves and Wallace on this subject.
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  8.  55
    Gravity and Gauge.Nicholas J. Teh - 2016 - British Journal for the Philosophy of Science 67 (2):497-530.
    Philosophers of physics and physicists have long been intrigued by the analogies and disanalogies between gravitational theories and gauge theories. Indeed, repeated attempts to collapse these disanalogies have made us acutely aware that there are fairly general obstacles to doing so. Nonetheless, there is a special case space-time dimensions) in which gravity is often claimed to be identical to a gauge theory. I subject this claim to philosophical scrutiny in this article. In particular, I analyse how the standard disanalogies can (...)
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  9.  31
    On the Relation Between Dualities and Gauge Symmetries.Sebastian de Haro, Nicholas Teh & Jeremy Butterfield - 2016 - Philosophy of Science 83 (5):1059-1069.
    We make two points about dualities in string theory. The first point is that the conception of duality, which we will discuss, meshes with two dual theories being ‘gauge related’ in the general philosophical sense of being physically equivalent. The second point is a result about gauge/gravity duality that shows its relation to gauge symmetries to be subtler than one might expect: each of a certain class of gauge symmetries in the gravity theory, that is, diffeomorphisms, is related to a (...)
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  10.  17
    The Teleparallel Equivalent of Newton-Cartan Gravity.James Read & Nicholas Teh - unknown
    We construct a notion of teleparallelization for Newton-Cartan theory, and show that the teleparallel equivalent of this theory is Newtonian gravity; furthermore, we show that this result is consistent with teleparallelization in general relativity, and can be obtained by null-reducing the teleparallel equivalent of a five-dimensional gravitational wave solution. This work thus strengthens substantially the connections between four theories: Newton-Cartan theory, Newtonian gravitation theory, general relativity, and teleparallel gravity.
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  11.  57
    On Classical Cloning and No-Cloning.Nicholas J. Teh - 2012 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 43 (1):47-63.
  12.  18
    Some Remarks on Rovelli's "Why Gauge?".Nicholas Teh - unknown
    Rovelli's "Why Gauge?" offers a parable to show that gauge-dependent quantities have a modal and relational physical significance. We subject the morals of this parable to philosophical scrutiny and argue that, while his overarching point stands, there are subtle disanalogies between his parable and our best gauge theories, e.g. Yang-Mills theory and General Relativity.
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  13. Dodging the Fundamentalist Challenge.Xavi Lanao & Nicholas J. Teh - forthcoming - In Robert Charles Koons, William M. R. Simpson & Nicholas J. Teh (eds.), Neo-Aristotelian Perspectives on Modern Science. Routledge.
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  14.  11
    Abandoning Galileo's Ship: The Quest for Non-Relational Empirical Significance.Sebastián Murgueitio Ramírez & Nicholas Teh - forthcoming - British Journal for the Philosophy of Science.
    The recent debate about whether gauge symmetries can be empirically significant has focused on the possibility of 'Galileo's ship' types of scenarios, where the symmetries effect relational differences between a subsystem and the environment. However, it has gone largely unremarked that apart from such Galileo's ship scenarios, Greaves and Wallace (2014) proposed that gauge transformations can also be empirically significant in a 'non-relational' manner that is analogous to a Faraday-cage scenario, where the subsystem symmetry is related to a change in (...)
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  15.  12
    Faith in a Hard Ground: Essays on Religion, Philosophy and Ethics by G.E.M. Anscombe.Michael Pakaluk & Nicholas Teh - 2010 - New Blackfriars 91 (1034):487-490.
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  16.  12
    Two Forms of Inconsistency in Quantum Foundations.Jeremy Steeger & Nicholas Teh - forthcoming - British Journal for the Philosophy of Science:000-000.
    Recently, there has been some discussion of how Dutch Book arguments might be used to demonstrate the rational incoherence of certain hidden variable models of quantum theory. In this paper, we argue that the 'form of inconsistency' underlying this alleged irrationality is deeply and comprehensively related to the more familiar 'inconsistency' phenomenon of contextuality. Our main result is that the hierarchy of contextuality due to Abramsky and Brandenburger corresponds to a hierarchy of additivity/convexity-violations which yields formal Dutch Books of different (...)
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  17.  29
    A Note on Rovelli’s ‘Why Gauge?’.Nicholas J. Teh - 2015 - European Journal for Philosophy of Science 5 (3):339-348.
    Rovelli’s “Why Gauge?” offers a parable to show that gauge-dependent quantities have a modal and relational physical significance. We subject the morals of this parable to philosophical scrutiny and argue that, while Rovelli’s main point stands, there are important disanalogies between his parable and Yang-Mills type gauge theory.
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  18.  12
    BJPS Book Review of "Categories for the Working Philosopher". [REVIEW]Nicholas Teh & Chris Kapulkin - unknown
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  19.  11
    Classical Cloning and No-Cloning.Nicholas J. Teh - unknown
    It is part of information theory folklore that, while quantum theory prohibits the generic cloning of states, such cloning is allowed by classical information theory. Indeed, many take the phenomenon of no-cloning to be one of the features that distinguishes quantum mechanics from classical mechanics. In this paper, we use symplectic geometry to argue that pace conventional wisdom, in the case where one does not include a machine system, there is an analog of the no-cloning theorem for classical systems. However, (...)
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  20.  57
    Relational Realism: A New Foundation for Quantum Mechanics?: Michael Epperson and Elias Zafiris: Foundations of Relational Realism: A Topological Approach to Quantum Mechanics and the Philosophy of Nature. Lanham, Maryland: Lexington Books, 2013, Xviii+419pp, $101.28 HB.Nicholas J. Teh - 2015 - Metascience 24 (2):205-209.
    Foundations of Relational Realism: A Topological Approach to Quantum Mechanics and the Philosophy of Nature by Michael Epperson and Elias Zafiris sets out to achieve three goals: to develop a version of Whiteheadian metaphysics that the authors call “relational realism”; to formalize relational realism in terms of category theory, in particular sheaf theory; and to use relational realism to solve the interpretative problems of quantum mechanics. These goals are ambitious, to say the least, and all this is leaving aside those (...)
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