REAL OR IMAGINARY? ON PAIR CREATION IN DE SITTER SPACE

被引：40

作者：

Akhmedov, Emil T. ^{[1
]}

机构：

[1] ITEP, Moscow 117218, Russia

来源：

MODERN PHYSICS LETTERS A | 2010年 / 25卷 / 33期

关键词：

de Sitter space; Gibbons-Hawking pair production; strong gravitational fields; PERTURBATIVE QUANTUM-GRAVITY; DESITTER SPACE; PARTICLE CREATION; FIELD-THEORY; INFLATION; VACUUM; ENERGY;

D O I：

10.1142/S0217732310034043

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using properly defined Feynman propagator we obtain nonzero imaginary contribution to the scalar field effective action in even-dimensional de Sitter space. Such a propagator follows from the path integral in de Sitter space and obeys composition principle proposed in arXiv:0709.2899. The obtained expression for the effective action shows particle production with the Gibbons Hawking rate.

引用

页码：2815 / 2823

页数：9

共 37 条

[1] Interacting field theories in de Sitter space are nonunitary [J].

Akhmedov, Emil T. ;

Buividovich, P. V. .

PHYSICAL REVIEW D, 2008, 78 (10)

[2]

AKHMEDOV ET, ARXIV09052742, P23507

[3]

AKHMEDOV ET, ARXIV09010424

[4] Temporal contribution to gravitational WKB-like calculations [J].

Akhmedova, Valeria ;

Pilling, Terry ;

de Gill, Andrea ;

Singleton, Douglas .

PHYSICS LETTERS B, 2008, 666 (03) :269-271

[5] VACUUM STATES IN DE-SITTER SPACE [J].

ALLEN, B .

PHYSICAL REVIEW D, 1985, 32 (12) :3136-3149

[6]

ALVAREZ E, ARXIV09072375

[7]

BORNER G, 1969, NUOVO CIMENTO, V64

[8] Conformal vacua and entropy in de Sitter space [J].

Bousso, R ;

Maloney, A ;

Strominger, A .

PHYSICAL REVIEW D, 2002, 65 (10)

[9] QUANTUM FIELD-THEORY IN DE SITTER SPACE - RENORMALIZATION BY POINT-SPLITTING [J].

BUNCH, TS ;

DAVIES, PCW .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1978, 360 (1700) :117-134

[10] PROPAGATORS AND EFFECTIVE POTENTIALS IN ANTI-DESITTER SPACE [J].

BURGESS, CP ;

LUTKEN, CA .

PHYSICS LETTERS B, 1985, 153 (03) :137-141

← 1 2 3 4 →