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arxiv: gr-qc/9404048 · v1 · submitted 1994-04-26 · 🌀 gr-qc

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Semiclassical Gravitational Effects in de Sitter Space at Finite Temperature

D.V. Fursaev , G. Miele
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classification 🌀 gr-qc
keywords sittereffectseinsteinequationsfieldfinitesemiclassicaltemperature
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In the framework of finite temperature conformal scalar field theory on de Sitter space-time the linearized Einstein equations for the renormalized stress tensor are exactly solved. In this theory quantum field fluctuations are concentrated near two spheres of the de Sitter radius, propagating as light wave fronts. Related cosmological aspects are shortly discussed. The analysis, performed for flat expanding universe, shows exponential damping of the back-reaction effects far from these spherical objects. The obtained solutions for the semiclassical Einstein equations in de Sitter background can be straightforwardly extended also to the anti-de Sitter geometry.

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  1. Universal analytic dependence of the stress-energy tensor at thermodynamic equilibrium in curved space-time

    hep-th 2026-04 unverdicted novelty 7.0

    The analytic part of the stress-energy tensor at thermodynamic equilibrium has a universal covariant form independent of specific curved spacetime geometry for the massless scalar field, argued to hold for any quantum...