Thermodynamical properties of metric fluctuations during inflation

Details Thermodynamical properties of metric fluctuations during inflation Thermodynamical properties of metric fluctuations during inflation

2001-10-30

arxiv.org/abs/gr-qc/0110123v2

Gen.Rel.Grav. 34 (2002) 1483-1489

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, no figures (accepted to publication in General Relativity and Gravitation)

Scientific paper

I study a thermodynamical approach to scalar metric perturbations during the
inflationary stage. In the power-law expanding universe here studied, I find a
negative heat capacity as a manifestation of superexponential growing for the
number of states in super Hubble scales. The power spectrum depends on the
Gibbons-Hawking and Hagedorn temperatures.

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