|Thursday 24 September 2020|
|Events for day: Tuesday 01 September 2020|
| 14:00 - 15:00 Weekly Seminar|
Induced energy-momentum tensor of Dirac field in 2-dimensional de Sitter quantum electrodynamics
The expectation value of energy-momentum tensor is computed in the in-vacuum state of the quantized Dirac field coupled to a uniform electric field background on the Poincare path of the two dimensional de Sitter spacetime . The adiabatic regularization scheme is applied in order to remove the ultraviolet divergences from the expressions. In this talk, I will follow our work in arXiv:1911.10588. I will explore the trace anomaly of the induced energy-momentum tensor, which agrees precisely with the trace anomaly derived earlier in the literature. I will discuss the backreaction of the induced energy-momentum tensor on the gra ...