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arxiv: 1704.00614 · v2 · submitted 2017-04-03 · ✦ hep-th · gr-qc

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Thermal expectation values of fermions on anti-de Sitter space-time

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classification ✦ hep-th gr-qc
keywords thermalanti-deexpectationfeynmanfunctiongreensitterspace-time
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Making use of the symmetries of anti-de Sitter space-time, we derive an analytic expression for the bispinor of parallel transport, from which we construct in closed form the vacuum Feynman Green's function of the Dirac field on this background. Using the imaginary time anti-periodicity property of the thermal Feynman Green's function, we calculate the thermal expectation values of the fermion condensate and stress-energy tensor and highlight the effect of quantum corrections as compared to relativistic kinetic theory results.

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    In the quark-meson model on thermal AdS, chiral symmetry is always broken near the boundary with unique regular inhomogeneous condensate solutions; temperature restores symmetry while negative curvature favors breakin...