Locally covariant QFT and the problem of formulating the same physics in all spacetimes

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• Chris Fewster (University of York)
• Wednesday 23 November 2011, 14:15-15:15
• MR2, Centre for Mathematical Sciences.

If you have a question about this talk, please contact Pau Figueras.

Axiomatic approaches to QFT have traditionally been confined to flat (or maximally symmetric) spacetimes, or to the analysis of particular model theories. To go beyond this, it is necessary to understand in general what it means for a theory to represent the same underlying physics in different spacetimes, without assuming the existence of a Lagrangian description. Brunetti, Fredenhagen and Verch (BFV) have proposed a framework for locally covariant QFT , using category theory, that generalizes the axiomatic approach to general curved spacetimes. In this talk, I will review the BFV framework and examine the extent to which it succeeds in formulating the same physics in all spacetimes. The talk is based on recent papers written with Rainer Verch.

This talk is part of the Theoretical Physics Colloquium series.

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