Dissipative effects during neutrino decoupling in the early universe create a small backreaction on the Hubble rate, and lead to a small rise in temperature and entropy. We use a simplified thermo-hydrodynamic model, which provides a causal approximation to kinetic theory, in order to estimate the backreaction effects and the entropy production.
|Journal||General Relativity and Gravitation|
|Publication status||Published - Sept 2000|
- Relativistic thermodynamics