Adiabatic regularization for spin $1/2$ fields and the renormalized stress-energy tensor
General Relativity and Quantum Cosmology
2024-12-10 v1
Abstract
In this article we briefly review the adiabatic renormalization program for spin 1/2 fields in expanding universes. We introduce the method and provide explicit expressions for the renormalized vacuum expectation value of the stress-energy tensor. Then, we discuss its application to some cosmological scenario of physical interest. We end up sketching out the proof that adiabatic and DeWitt-Schwinger point-splitting schemes provide the same renormalized expectation values of the stress-energy tensor for Dirac fields.
Cite
@article{arxiv.2412.06718,
title = {Adiabatic regularization for spin $1/2$ fields and the renormalized stress-energy tensor},
author = {Adrian del Rio and Jose Navarro-Salas},
journal= {arXiv preprint arXiv:2412.06718},
year = {2024}
}
Comments
Proceedings of the 14th Marcel Grossmann Meeting, 2816-2821 (2017)