Point splitting renormalization of Schwinger induced current in de Sitter spacetime
High Energy Physics - Theory
2016-07-20 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
The covariant and gauge invariant calculation of the current expectation value in the homogeneous electric field in 1+3 dimensional de Sitter spacetime is shown. The result accords with previous work obtained by using adiabatic subtraction scheme. We therefore conclude the counterintuitive behaviors of the current in the infrared (IR) regime such as IR hyperconductivity and negative current are not artifacts of the renormalization scheme, but are real IR effects of the spacetime.
Keywords
Cite
@article{arxiv.1603.06172,
title = {Point splitting renormalization of Schwinger induced current in de Sitter spacetime},
author = {Takahiro Hayashinaka and Jun'ichi Yokoyama},
journal= {arXiv preprint arXiv:1603.06172},
year = {2016}
}
Comments
14 pages, 4 figures