Curvature expansion of the heat kernel and effective action is derived for quasi-thermal non-vacuum gravitational backgrounds using a covariant generalized Killing vector field.
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Autonomous equations applied to perturbative series and their Borel transforms produce finite time-dependent correlation functions that approximate stochastic results for scalar fields in de Sitter space more accurately.
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Non-vacuum gravitational effective action
Curvature expansion of the heat kernel and effective action is derived for quasi-thermal non-vacuum gravitational backgrounds using a covariant generalized Killing vector field.
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Taming the infrared in de Sitter space: autonomous equations, stochastic approach, and Borel resummation
Autonomous equations applied to perturbative series and their Borel transforms produce finite time-dependent correlation functions that approximate stochastic results for scalar fields in de Sitter space more accurately.