Quantum fields in Bianchi type I spacetimes: The Kasner metric
Abstract
Vacuum polarization of the quantized massive fields in Bianchi type I spacetime is investigated from the point of view of the adiabatic approximation and the Schwinger-DeWitt method. It is shown that both approaches give the same results that can be used in construction of the trace of the stress-energy tensor of the conformally coupled fields. The stress-energy tensor is calculated in the Bianchi type I spacetime and the backreaction of the quantized fields upon the Kasner geometry is studied. A special emphasis is put on the problem of isotropization, studied with the aid of the directional Hubble parameters. Similarities with the quantum-corrected interior of the Schwarzschild black hole are briefly discussed.
- Publication:
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Physical Review D
- Pub Date:
- November 2018
- DOI:
- 10.1103/PhysRevD.98.104054
- arXiv:
- arXiv:1811.00993
- Bibcode:
- 2018PhRvD..98j4054M
- Keywords:
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- General Relativity and Quantum Cosmology
- E-Print:
- Phys. Rev. D 98, 104054 (2018)