On Fermion-Graviton Scattering at Finite Temperature

TL;DR

This paper investigates how finite temperature affects fermion-graviton scattering processes, using Thermo Field Dynamics to compute transition amplitudes relevant for high-temperature astrophysical phenomena.

Contribution

It applies Thermo Field Dynamics to calculate fermion-graviton scattering amplitudes at finite temperature, highlighting the thermal effects on gravitational interactions in extreme environments.

Findings

Transition amplitudes include zero-temperature and temperature-dependent parts.

Thermal effects modify gravitational scattering processes.

Results applicable to astrophysical phenomena like stars and black holes.

Abstract

The early universe is dominated by phenomena at high temperatures. The thermal effects decrease during evolution of the universe. However there are some phenomena, such as processes inside stars and black holes, where the role of the temperature is important. Study of processes involving gravitons at finite temperature is a viable means to understand gravitational processes in the universe. Using the Thermo Field Dynamics formalism transition amplitudes involving gravitons and fermions at finite temperature are calculated. In this approach our results consist of two parts: one corresponding to the zero temperature part and the other corresponding to a temperature dependent part.