Vacuum Energy in Two Dimensional Box Through the Krein Quantization

被引：1
|
作者：
Ghaffari, Ali [1 ]
Karimaghaee, Sanaz [1 ]
Tanhayi, M. R. [1 ]
机构：
[1] Islamic Azad Univ, Cent Tehran Branch IAUCTB, Fac Basic Sci, Dept Phys, Tehran, Iran
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2017年 / 56卷 / 03期
关键词：
Casimir effect; Krein space; SPACE QUANTIZATION; CASIMIR; FIELDS;
D O I：
10.1007/s10773-016-3231-4
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this work we reexamine the Casimir effect in which the vacuum expectation value of quantum fields is calculated over a so-called Krein space. This method has already been successfully applied to study Casimir effect on non-trivial topologies and also the covariance problem in the massless minimally coupled scalar field in de Sitter space-time. It is shown that within this method, no infinite term appears in the computation of the vacuum expectation value of energy-momentum tensor. We investigate the behavior of the Krein quantization for a scalar field in a box satisfying the Dirichlet boundary condition. We show that one can recover the usual theory with the exception that the vacuum energy of the free theory is zero.
引用
收藏
页码：887 / 897
页数：11
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