UNITARITY CONDITION ON QUANTUM-FIELDS IN SEMICLASSICAL GRAVITY

被引：13
|
作者：
KIM, SP
机构：
[1] Department of Physics, Kunsan National University, Kunsan
来源：
PHYSICS LETTERS A | 1995年 / 205卷 / 5-6期
关键词：
D O I：
10.1016/0375-9601(95)00584-P
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 terms of the eigenfunctions of the generalized invariant of the matter field Hamiltonian whose asymptotic solution is found explicitly.
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页码：359 / 363
页数：5
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