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Lorentzian bordisms in algebraic quantum field theory

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arxiv 2308.01026 v2 pith:B4TSGDKW submitted 2023-08-02 math-ph hep-thmath.DGmath.MPmath.QA

classification math-phhep-thmath.DGmath.MPmath.QA
keywords fieldtheoryalgebraicquantumfunctoriallorentzianbordismsglobally
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It is shown that every algebraic quantum field theory has an underlying functorial field theory which is defined on a suitable globally hyperbolic Lorentzian bordism pseudo-category. This means that globally hyperbolic Lorentzian bordisms between Cauchy surfaces arise naturally in the context of algebraic quantum field theory. The underlying functorial field theory encodes the time evolution of the original theory, but not its spatially local structure. As an illustrative application of these results, the algebraic and functorial descriptions of a free scalar quantum field are compared in detail.

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Cited by 2 Pith papers

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