English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

First-order thermodynamics of scalar-tensor cosmology

MPS-Authors
/persons/resource/persons273787

Giardino,  Serena
Lise Meitner Excellence Group: Gravitational Theory and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

2202.07393.pdf
(Preprint), 240KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Giardino, S., Faraoni, V., & Giusti, A. (2022). First-order thermodynamics of scalar-tensor cosmology. Journal of Cosmology and Astroparticle Physics, 2022(04): 053. doi:10.1088/1475-7516/2022/04/053.


Cite as: https://hdl.handle.net/21.11116/0000-000A-7026-D
Abstract
A new thermodynamics of scalar-tensor gravity is applied to spatially
homogeneous and isotropic cosmologies in this class of theories and tested on
analytical solutions. A forever-expanding universe approaches the Einstein
"state of equilibrium" with zero effective temperature at late times and
departs from it near spacetime singularities. "Cooling" by expansion and
"heating" by singularities compete near the Big Rip, where it is found that the
effective temperature diverges in the case of a conformally coupled scalar
field.