Jul 5 – 10, 2021
Europe/Rome timezone

Thermodynamics of scalar-tensor gravity: a new approach

Jul 5, 2021, 6:00 PM
20m
Invited talk in the parallel session Theories of gravity: alternatives to the cosmological and particle standard models Theories of Gravity: Alternatives to the Cosmological and Particle Standard Models

Speaker

Prof. Valerio Faraoni (Bishop's University)

Description

We propose a new approach to the thermodynamics of scalar-tensor gravity and its possible diffusion'' toward general relativity, previously regarded as an equilibrium state in spacetime thermodynamics. The main idea is describing scalar-tensor gravity as an effective dissipative fluid and applying Eckart’s first order thermodynamics to it. This gives explicit effective quantities: heat current density,temperature of gravity”, viscosity coefficients, entropy density, plus an equation describing the “diffusion” to Einstein gravity. These quantities, otherwise missing in spacetime thermodynamics, pop out with minimal assumptions.

Primary author

Prof. Valerio Faraoni (Bishop's University)

Presentation materials

Proceedings

Paper