Unitarity Condition on Quantum Fields in Semiclassical Gravity
General Relativity and Quantum Cosmology
2009-10-28 v1
Abstract
The condition for the unitarity of a quantum field is investigated in semiclassical gravity from the Wheeler-DeWitt equation. It is found that the quantum field preserves unitarity asymptotically in the Lorentzian universe, but does not preserve unitarity completely in the Euclidean universe. In particular we obtain a very simple matter field equation in the basis of the generalized invariant of the matter field Hamiltonian whose asymptotic solution is found explicitly.
Cite
@article{arxiv.gr-qc/9511037,
title = {Unitarity Condition on Quantum Fields in Semiclassical Gravity},
author = {Sang Pyo Kim},
journal= {arXiv preprint arXiv:gr-qc/9511037},
year = {2009}
}
Comments
11 pages of Latex file, Revtex