| Chicagoland Philosophy of Physics Reading Group | |
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This reading group meets roughly once a month for talks by visiting scholars, presentations of current research by group members, or discussions of recent publications in the philosophy of physics. Meetings take place roughly once per month, in the philosophy department at UIC. For more information, please email Brandon Fogel at this address: me at brandonfogel dot net. |
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| Schedule for 2008-2009 | |
| Wednesday September 10 2008 |
Visiting Scholar: Hasok Chang, STS, University College
London
Topic: Theory choice Data: 6pm at UIC |
| Wednesday October 8 2008 |
Visiting Scholar: Jeremy Butterfield, Trinity College,
Cambridge
Topic: Emergence (handouts: longer, shorter) Data: 6pm at UIC Photos: At the board, parrying |
| Wednesday November 12 2008 |
Visiting Scholar: Louis Kauffman,
Mathematics, UIC
Title: Topology and Quantum Computing Data: 6pm at UIC Abstract: This talk will discuss relationships between topology and quantum mechanics that are relevant to quantum information and quantum computation. We will discuss teleportation from a topological point of view, entanglement in the frameworks of topological entanglement (knotting and linking) and quantum entanglement, quantum knots, unitary representations of the Artin braid group that can perform universal quantum computation, and algorithms for computing knot invariants such as the Jones polynomial. Many of these constructions lead to questions and speculations about the nature of quantum mechanics. |
| Wednesday January 14 2009 |
Group Member: Brandon Fogel, Society of Fellows, University
of Chicago
Title: The Road Not Taken: Bell's Theorem and the Reality of Counterfactuals Data: 6pm at UIC |
| Wednesday February 11 2009 |
Group Member: Brian Pitts, University
of Notre Dame
Title: Empirical Equivalence, Artificial Gauge Freedom and a Generalized Kretschmann Objection Data: 6pm at UIC Abstract: Einstein considered general covariance to characterize the novelty of his General Theory of Relativity (GTR), but Kretschmann thought it merely a formal feature that any theory could have. The claim that GTR is "already parametrized" suggests analyzing substantive general covariance as formal general covariance achieved without hiding preferred coordinates as scalar "clock fields," much as Einstein construed general covariance as the lack of preferred coordinates. Physicists often install gauge symmetries artificially with additional fields, as in the transition from Proca's to Stueckelberg's electromagnetism. Post-positivist philosophical principles judge Stueckelberg's electromagnetism distinct from and inferior to Proca's. By contrast, physicists identify them, the differences being gauge-dependent and hence unreal. It is often useful to install gauge freedom in theories with broken gauge symmetries (second-class constraints) using a modified Batalin-Fradkin-Tyutin (BFT) procedure. Massive GTR, for which parametrization and a Lagrangian BFT-like procedure appear to coincide, mimics GTR's general covariance apart from telltale clock fields. A generalized procedure for installing artificial gauge freedom subsumes parametrization and BFT, while being more Lagrangian-friendly than BFT is. Artificial gauge freedom licenses a generalized Kretschmann objection. However, features of paradigm cases of artificial gauge freedom might help to demonstrate a principled distinction between substantive and merely formal gauge symmetry. |
| Wednesday March 11 2009 |
TBA |
| Wednesday April 8 2009 |
TBA |