Interaction between Maxwell field and charged scalar field in de Sitter universe

被引：15
|
作者：
Crucean, Cosmin [1 ]
Baloi, Mihaela-Andreea [1 ]
机构：
[1] West Univ Timisoara, V Parvan Ave 4, RO-300223 Timisoara, Romania
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2015年 / 30卷 / 16期
关键词：
de Sitter geometry; interacting fields; particle production; SPIN-1/2; PARTICLES; QUANTIZED-FIELDS; DIRAC-EQUATION; ELECTRIC-FIELD; QUANTUM-THEORY; CREATION; RADIATION;
D O I：
10.1142/S0217751X15500888
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We study the theory of interaction between charged scalar field and Maxwell field in de Sitter background. Solving the equation of interacting fields, we define the in-out fields as asymptotic free fields and construct the reduction formalism for scalar field. Then we derive the perturbation expansion of the scattering operator. The first-order transition amplitudes corresponding to particle production from de Sitter vacuum and pair production in an external field are analyzed. We show that all these effects are important only in strong gravitational fields and vanish in the flat limit.
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页数：22
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