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  1. Simon Friederich (forthcoming). Symmetry, Empirical Equivalence, and Identity. British Journal for the Philosophy of Science:axt046.
    The article proposes a novel approach to the much discussed question of which symmetries have ‘direct empirical significance’ and which do not. The approach is based on a development of a recently proposed framework by Hilary Greaves and David Wallace, who claim that, contrary to the standard folklore among philosophers of physics, ‘local’ symmetries may have direct empirical significance no less than ‘global’ ones. Partly vindicating the standard folklore, a result is derived here from a number of plausible assumptions, that (...)
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  2. Simon Friederich, Robert Harlander & Koray Karaca (forthcoming). Philosophical Perspectives on Ad Hoc Hypotheses and the Higgs Mechanism. Synthese:1-21.
    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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  3. Simon Friederich (2014). Warum die Mathematik keine ontologische Grundlegung braucht. Wittgenstein-Studien 5 (1).
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  4. Simon Friederich (2013). Gauge Symmetry Breaking in Gauge Theories—in Search of Clarification. European Journal for Philosophy of Science 3 (2):157-182.
    The paper investigates the spontaneous breaking of gauge symmetries in gauge theories from a philosophical angle, taking into account the fact that the notion of a spontaneously broken local gauge symmetry, though widely employed in textbook expositions of the Higgs mechanism, is not supported by our leading theoretical frameworks of gauge quantum theories. In the context of lattice gauge theory, the statement that local gauge symmetry cannot be spontaneously broken can even be made rigorous in the form of Elitzur’s theorem. (...)
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  5. Simon Friederich (2013). In Defence of Non-Ontic Accounts of Quantum States. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 44 (2):77-92.
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  6. Simon Friederich (2013). Interpreting Heisenberg Interpreting Quantum States. Philosophia Naturalis 50 (1):85-114.
    The paper investigates possible readings of the later Heisenberg's remarks on the nature of quantum states. It discusses, in particular, whether Heisenberg should be seen as a proponent of the epistemic conception of states – the view that quantum states are not descriptions of quantum systems but rather reflect the state assigning observers' epistemic relations to these systems. On the one hand, it seems plausible that Heisenberg subscribes to that view, given how he defends the notorious "collapse of the wave (...)
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  7. Simon Friederich (2013). Pristinism Under Pressure: Ruetsche on the Interpretation of Quantum Theories. [REVIEW] Erkenntnis 78 (5):1205-1212.
    Review of Laura Ruetsche's book "Interpreting Quantum Theories".
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  8. Simon Friederich, A Philosophical Look at the Higgs Mechanism.
    On the occasion of the recent experimental detection of a Higgs-type particle at the Large Hadron Collider (LHC) at CERN, the paper reviews philosophical aspects of the Higgs mechanism as the presently preferred account of the generation of particle masses in the Standard Model of elementary particle physics and its most discussed extensions. The paper serves a twofold purpose: on the one hand, it offers an introduction to the Higgs mechanism and its most interesting philosophical aspects to readers not familiar (...)
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  9. Simon Friederich (2011). How to Spell Out the Epistemic Conception of Quantum States. Studies in History and Philosophy of Science Part B 42 (3):149-157.
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  10. Simon Friederich (2010). Structuralism and Meta-Mathematics. Erkenntnis 73 (1):67 - 81.
    The debate on structuralism in the philosophy of mathematics has brought into focus a question about the status of meta-mathematics. It has been raised by Shapiro (2005), where he compares the ongoing discussion on structuralism in category theory to the Frege-Hilbert controversy on axiomatic systems. Shapiro outlines an answer according to which meta-mathematics is understood in structural terms and one according to which it is not. He finds both options viable and does not seem to prefer one over the other. (...)
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