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Profile: Holger Lyre
  1. Tim Oliver Eynck, Holger Lyre & Nicolai von Rummell, A Versus B! Topological Nonseparability and the Aharonov-Bohm Effect.
    Since its discovery in 1959 the Aharonov-Bohm effect has continuously been the cause for controversial discussions of various topics in modern physics, e.g. the reality of gauge potentials, topological effects and nonlocalities. In the present paper we juxtapose the two rival interpretations of the Aharonov-Bohm effect. We show that the conception of nonlocality encountered in the Aharonov-Bohm effect is closely related to the nonseparability which is common in quantum mechanics albeit distinct from it due to its topological nature. We propose (...)
     
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  2. Holger Lyre, What is Active Externalism?
    The aim of this paper is to scrutinize active externalism and its repercussions for externalism about mental content. I start from the claim that active externalism is a variant of content externalism that is induced by the extended cognition thesis as a thesis about cognitive vehicles. Various features of active externalism are explored by comparison with the known forms of passive externalism - particularly in connection with the multirealizability of the external content-determining components and mental causation. A crucial result is (...)
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  3. Holger Lyre (2015). Active Content Externalism. Review of Philosophy and Psychology:1-17.
    The aim of this paper is to scrutinize active externalism and its repercussions for externalism about mental content. I start from the claim that active externalism is a version of content externalism that follows from the extended cognition thesis as a thesis about cognitive vehicles. Various features of active content externalism are explored by comparison with the known forms of passive externalism – in particular with respect to the multiple realizability of the relevant external content-determining components and with respect to (...)
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  4. Holger Lyre (2015). Quanten-Identität und Ununterscheidbarkeit. In Cord Friebe (ed.), Philosophie der Quantenphysik. Springer Spektrum. 79-111.
  5. Anke Büter, Ramiro Glauer & Holger Lyre (2014). How Much Philosophy in the Philosophy of Science? Journal for General Philosophy of Science 45 (1):1-3.
    This supplement serves a double purpose. It presents, on the one hand, a selection of papers devoted to the title question “How much philosophy in the philosophy of science?”. On the other hand, it signalizes the newly established cooperation between the German Society for the Philosophy of Science and the Journal for General Philosophy of Science .The GWP was founded in Hannover in 2011 and had its inaugural conference in March 2013 [for a report on the “GWP.2013” by H. Lyre (...)
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  6. Holger Lyre (2014). Berry Phase and Quantum Structure. Studies in History and Philosophy of Modern Physics 48.
    The paper aims to spell out the relevance of the Berry phase in view of the question what the minimal mathematical structure is that accounts for all observable quantum phenomena. The question is both of conceptual and of ontological interest. While common wisdom tells us that the quantum structure is represented by the structure of the projective Hilbert space, the appropriate structure rich enough to account for the Berry phase is the U(1) bundle over that projective space. The Berry phase (...)
     
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  7. Holger Lyre (2014). C. F. von Weizsäckers Philosophie des Geistes. Acta Historica Leopoldina 63:201-210.
    The paper deals with Weizsäcker’s position within the philosophy of mind. It turns out that Weizsäcker’s ontology is based on an unorthodox conception both in the philosophy of physics and in the philosophy of mind. His quantum information theoretic reductionism is based on a subtle combination of atomism and holism, his philosophy of mind connected to this is a neutral monism, which proposes a bold intertwining of mind, matter, and space.
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  8. Holger Lyre (2013). Must Structural Realism Cover the Special Sciences? In Vassilios Karakostas & Dennis Dieks (eds.), Epsa11 Perspectives and Foundational Problems in Philosophy of Science. Springer. 383--390.
    Structural Realism (SR) is typically rated as a moderate realist doctrine about the ultimate entities of nature described by fundamental physics. Whether it must be extended to the higher-level special sciences is not so clear. In this short paper I argue that there is no need to ‘structuralize’ the special sciences. By mounting concrete examples I show that structural descriptions and structural laws certainly play a role in the special sciences, but that they don’t play any exclusive role nor that (...)
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  9. Holger Lyre (2013). Verkörperlichung und situative Einbettung. In Achim Stephan & Sven Walter (eds.), Handbuch Kognitionswissenschaft. Metzler, Stuttgart, S. , 2013. Metzler. 186-192.
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  10. Holger Lyre (2012). Reduktionismus, Multirealisierbarkeit Und Höherstufige Näherungen. In J. Michel G. Münster (ed.), Die Suche nach dem Geist. Mentis.
    Der Aufsatz lotet den zeitgenössischen Reduktionismus aus. Im ersten Teil wird in zentrale Stationen der wissenschaftstheoretischen Debatte um Theorien-Reduktion eingeleitet, wobei das Schaffner-Hooker-Modell und die Bedeutung von Näherungsbegriffen hervorgehoben werden. Der zweite Teil behandelt die multiple Realisierbarkeit als eines der nach wie vor zentralen anti-reduktionistischen Argumente. Die Analyse soll zeigen, dass es sich hierbei nicht um ein einheitliches Phänomen handelt, sondern dass sehr verschiedene Kategorien von Multirealisierbarkeit zu unterscheiden sind. In einem vereinfachten Slogan: multiple Realisierbarkeit ist ihrerseits multirealisiert. Der Aufsatz (...)
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  11. Holger Lyre (2012). Symmetrien, Strukturen, Realismus. In Michael Esfeld (ed.), Philosophie der Physik. Suhrkamp. 368-389.
    In der modernen Physik spielen Symmetrien eine herausragende Rolle zur Identifikation und Klassifizierung der fundamentalen Theorien und Entitäten. Symmetrien dienen der Darstellung invarianter Strukturen, das geeignete mathematische Werkzeug hierfür ist die Gruppentheorie. Eine Struktur lässt sich als eine Menge von Relationen verstehen, die einer Menge von Objekten aufgeprägt sind. Strukturell charakterisierte Objekte sind daher wesentlich über ihre relationalen Eigenschaften charakterisiert. Sieht man die theoretischen Entitäten wissenschaftlicher Theorien vornehmlich in dieser strukturellen Weise an, vertritt man eine moderate Variante eines wissenschaftlichen Realismus, (...)
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  12. Holger Lyre (2012). The Just-So Higgs Story: A Response to Adrian Wüthrich. [REVIEW] Journal for General Philosophy of Science 43 (2):289-294.
    I give a response to Adrian Wüthrich’s critical review of my analysis of the Higgs mechanism, in which I try to clarify some possible misunderstandings. I concede that, as Wüthrich points out, many physicists see the Higgs mechanism as the roll-over from a symmetrical potential in the initial Lagrangian to a symmetry-breaking potential, while my former analysis had basically focused on the gauge-invariant transformation of the initial Lagrangian into the intended form. My main contention, however, still is that neither Higgs (...)
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  13. Holger Lyre (2012). The Place of Philosophy of Physics in Physics and Philosophy: A Response to Michael Dummett. European Journal of Analytic Philosophy 8 (1):120-132.
    The paper is an attempt to react as direct and as close as possible on Dummett’s 2007 paper by addressing his overall theses about bridging the gulfs between philosophers and physicists and between analytical and continental philosophy on the one hand and, on the other hand, picking up a couple of more detailed issues Dummett raises about physics and its philosophy.
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  14. Holger Lyre (2011). Is Structural Underdetermination Possible? Synthese 180 (2):235 - 247.
    Structural realism is sometimes said to undermine the theory underdetermination (TUD) argument against realism, since, in usual TUD scenarios, the supposed underdetermination concerns the object-like theoretical content but not the structural content. The paper explores the possibility of structural TUD by considering some special cases from modern physics, but also questions the validity of the TUD argument itself. The upshot is that cases of structural TUD cannot be excluded, but that TUD is perhaps not such a terribly serious anti-realistic argument.
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  15. Holger Lyre (2010). Erweiterte Kognition und mentaler Externalismus. Zeitschrift für Philosophische Forschung 64 (2):190-215.
    Recent developments under the keywords dynamicism, embodiment and situated cognition suggest the view that cognitive systems are not confined to the neural sys‐tem but leak into the world beyond the traditional system boundaries. This is the thesis of extended cognition. Such an extension of the cognitive vehicles leads to a new kind of content externalism, known as active externalism. The essay pursues three objectives: firstly, to distinguish the theses of extended cognitive and active externalism. Secondly, to delineate active externalism from (...)
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  16. Holger Lyre (2010). Humean Perspectives on Structural Realism. In F. Stadler (ed.), The Present Situation in the Philosophy of Science. Springer. 381--397.
    The paper is a kind of opinionated review paper on current issues in the debate about Structural Realism, roughly the view that we should be committed in the structural rather than object-like content of our best current scientific theories. The major thesis in the first part of the paper is that Structural Realism has to take structurally derived intrinsic properties into account, while in the second part key elements of aligning Structural Realism with a Humean framework are outlined.
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  17. Holger Lyre (2010). Why Quantum Theory is Possibly Wrong. Foundations of Physics 40 (9):1429-1438.
    Quantum theory is a tremendously successful physical theory, but nevertheless suffers from two serious problems: the measurement problem and the problem of interpretational underdetermination. The latter, however, is largely overlooked as a genuine problem of its own. Both problems concern the doctrine of realism, but pull, quite curiously, into opposite directions. The measurement problem can be captured such that due to scientific realism about quantum theory common sense anti-realism follows, while theory underdetermination usually counts as an argument against scientific realism. (...)
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  18. Holger Lyre (2009). Structural Realism and Abductive-Transcendental Arguments. In P. Kerszberg, J. Petitot & M. Bitbol (eds.), Constituting Objectivity. Transcendental Perspectives on Modern Physics.
    The paper deals with an attempt to present an “abductive-transcendental” argument in favour of a particular version of structural realism (SR), dubbed Intermediate SR. In the first part of the paper the general structure of transcendental arguments is scrutinized with a close view on Kant’s original version and the prospect of their abductive variation. Then the role of symmetries in modern physics, especially symmetries without real instantiations and in particular gauge symmetries is discussed. This is combined with a presentation of (...)
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  19. Holger Lyre (2009). The “Multirealization” of Multiple Realizability. In A. Hieke & H. Leitgeb (eds.), Reduction - Abstraction - Analysis. Ontos. 79.
    Multiple Realizability (MR) must still be regarded as one of the principal arguments against type reductionist accounts of higher-order properties and their special laws. Against this I argue that there is no unique MR but rather a multitude of MR categories. In a slogan: MR is itself “multi-realized”. If this is true then we cannot expect one unique reductionist strategy against MR as an anti-reductionist argument. The main task is rather to develop a taxonomy of the wide variety of MR (...)
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  20. Dean Rickles, Chris Smeenk, Holger Lyre & Richard Healey (2009). Gauge Pressure. Metascience 18 (1):5-41.
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  21. Holger Lyre (2008). Does the Higgs Mechanism Exist? International Studies in the Philosophy of Science 22 (2):119-133.
    This paper explores the argument structure of the concept of spontaneous symmetry breaking in the electroweak gauge theory of the Standard Model: the so-called Higgs mechanism. As commonly understood, the Higgs argument is designed to introduce the masses of the gauge bosons by a spontaneous breaking of the gauge symmetry of an additional field, the Higgs field. The technical derivation of the Higgs mechanism, however, consists in a mere reshuffling of degrees of freedom by transforming the Higgs Lagrangian in a (...)
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  22. Holger Lyre (2008). Handedness, Self-Models and Embodied Cognitive Content. Phenomenology and the Cognitive Sciences 7 (4):529–538.
    The paper presents and discusses the “which-is-which content of handedness,” the meaning of left as left and right as right, as a possible candidate for the idea of a genuine embodied cognitive content. After showing that the Ozma barrier, the non-transferability of the meaning of left and right, provides a kind of proof of the non-descriptive, indexical nature of the which-is-which content of handedness, arguments are presented which suggest that the classical representationalist account of cognition faces a perplexing problem of (...)
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  23. Holger Lyre (2008). Is Really Something Wrong with Microphysicalism? Andreas Hüttemann, “What's Wrong with Microphysicalism?”. Journal for General Philosophy of Science 39 (1):167-171.
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  24. Holger Lyre (2008). „Was Ist Wissenschaft? Darstellung Und Bestandsaufnahme der Deutschen Wissenschaftsphilosophie“; Wissenschaftszentrum Bonn, 17–19. März 2008. [REVIEW] Journal for General Philosophy of Science 39 (2):395 - 401.
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  25. Holger Lyre (2006). Kants „Metaphysische Anfangsgründe der Naturwissenschaft“: gestern und heute. Deutsche Zeitschrift für Philosophie 54 (3/2006):401-416.
    Ausgehend von der These, dass Kant seine transzendentalphilosophische Methode als erkenntnistheoretisches Mittel zu einem übergeordneten naturphilosophischen Zweck, nämlich der Apriori-Begründung der fundamentalen Grundgesetze der Physik, entwickelte, zeichnet der Aufsatz zunächst die historische Entwicklung der „Metaphysischen Anfangsgründe der Naturwissenschaft“ sowie ihre wesentlichen technischen Mängel auf. In einem zweiten Schritt wird dann der Frage nachgegangen, welche modernen Umsetzungsoptionen sich für das kantische Programm bieten, wobei weiterhin für eine strenge, das heißt nicht relativierende Sichtweise des Apriori plädiert wird, deren Bestätigung jedoch, anders als (...)
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  26. Holger Lyre (2006). Wissenschaftlicher Realismus. Eine Studie Zur Realismus-Antirealismus-Debatte in der Neueren Wissenschaftstheorie. Journal for General Philosophy of Science 37 (2):437-441.
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  27. Holger Lyre (2005). Metaphysik im “Handumdrehen” – Kant und Earman, Parität und moderne Raumauffassung. Philosophia Naturalis 42 (1):49-76.
    In 1768 Immanuel Kant presented an argument showing the necessity of absolute space, i.e. substantivalism in contrast to relationalism, based on the property of handedness. While there is large consensus about the fallacy of Kant’s argument, a more recent debate exists – mainly stimulated by John Earman – about the status of the Kantian argument in view of modern physics and its fundamentally built-in parity violation, which leads to a preferred handedness. According to Earman the relationalist has no means to (...)
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  28. Holger Lyre (2004). Holism and Structuralism in (1) Gauge Theory. Studies in History and Philosophy of Science Part B 35 (4):643-670.
    After decades of neglect philosophers of physics have discovered gauge theories--arguably the paradigm of modern field physics--as a genuine topic for foundational and philosophical research. Incidentally, in the last couple of years interest from the philosophy of physics in structural realism--in the eyes of its proponents the best suited realist position towards modern physics--has also raised. This paper tries to connect both topics and aims to show that structural realism gains further credence from an ontological analysis of gauge theories--in particular (...)
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  29. Holger Lyre (2004). Lokale Symmetrien und Wirklichkeit. Eine naturphilosophische Studie über Eichtheorien und Strukturenrealismus. Mentis.
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  30. Holger Lyre & Tim Oliver Eynck (2003). Curve It, Gauge It, or Leave It? Practical Underdetermination in Gravitational Theories. Journal for General Philosophy of Science 34 (2):277-303.
    Four empirically equivalent versions of general relativity, namely standard GR, Lorentz-invariant gravitational theory,and the gravitational gauge theories of the Lorentz and translation groups, are investigated in the form of a case study for theory underdetermination. The various ontological indeterminacies (both underdetermination and inscrutability of reference) inherent in gravitational theories are analyzed in a detailed comparative study. The concept of practical underdetermination is proposed, followed by a discussion of its adequacy to describe scientific progress.
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  31. Holger Lyre (2002). Cao, Tian Yu (Ed.), Conceptual Foundations of Quantum Field Theory. Journal for General Philosophy of Science 33 (1):174-180.
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  32. Holger Lyre (2002). Informationstheorie: Eine philosophisch-naturwissenschaftliche Einführung. Fink/UTB.
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  33. Holger Lyre (2001). The Principles of Gauging. Philosophy of Science 68 (3):S371-S381.
    The aim of this paper is twofold: First, to present an examination of the principles underlying gauge field theories. I shall argue that there are two principles directly connected to the two well-known theorems of Emmy Noether concerning global and local symmetries of the free matter-field Lagrangian, in the following referred to as "conservation principle" and "gauge principle". Since both these express nothing but certain symmetry features of the free field theory, they are not sufficient to derive a true interaction (...)
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  34. Holger Lyre (2000). Kann moderne Physik a priori begründbar sein? Philosophia Naturalis 37 (2):439-454.
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  35. Holger Lyre (1998). Quantentheorie der Information Zur Naturphilosophie der Theorie der Ur-Alternativen Und Einer Abstrakten Theorie der Information. Monograph Collection (Matt - Pseudo).
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