Fermion production from preheating-amplified metric perturbations

被引：13

作者：

Bassett, BA

Peloso, M

Sorbo, L

Tsujikawa, S

机构：

[1] Univ Portsmouth, Relat & Cosmol Grp, Portsmouth PO1 2EG, Hants, England

[2] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[3] SISSA, ISAS, I-34013 Trieste, Italy

[4] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy

[5] Univ Tokyo, Res Ctr Early Universe, Bunkyo Ku, Tokyo 1130033, Japan

来源：

NUCLEAR PHYSICS B | 2002年 / 622卷 / 1-2期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/S0550-3213(01)00608-3

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study gravitational creation of light fermions in the presence of classical scalar metric perturbations about a flat Friedmann-Lemaitre-Robertson-Walker (FLRW) background. These perturbations can be large during preheating, breaking the conformal flatness of the background spacetime. We compute numerically the total number of particles generated by the modes of the metric perturbations which have grown sufficiently to become classical. In the absence of inhomogeneities massless fermions are not gravitationally produced, and then this effect may be relevant for abundance estimates of light gravitational relics. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：393 / 415

页数：23

共 81 条

[1]

[Anonymous], 1980, QUANTUM FIELDS CURVE

[2] GAUGE-INVARIANT COSMOLOGICAL PERTURBATIONS [J].

BARDEEN, JM .

PHYSICAL REVIEW D, 1980, 22 (08) :1882-1905

[3] SPONTANEOUS CREATION OF ALMOST SCALE-FREE DENSITY PERTURBATIONS IN AN INFLATIONARY UNIVERSE [J].

BARDEEN, JM ;

STEINHARDT, PJ ;

TURNER, MS .

PHYSICAL REVIEW D, 1983, 28 (04) :679-693

[4]

Bassett BA, 2001, PHYS REV D, V63, DOI 10.1103/PhysRevD.63.103515

[5] Restoring the sting to metric preheating [J].

Bassett, BA ;

Gordon, C ;

Maartens, R ;

Kaiser, DI .

PHYSICAL REVIEW D, 2000, 61 (06)

[6] General relativistic effects in preheating [J].

Bassett, BA ;

Kaiser, DI ;

Maartens, R .

PHYSICS LETTERS B, 1999, 455 (1-4) :84-89

[7] Geometric reheating after inflation [J].

Bassett, BA ;

Liberati, S .

PHYSICAL REVIEW D, 1998, 58 (02) :213021-213025

[8] Metric preheating and limitations of linearized gravity [J].

Bassett, BA ;

Tamburini, F ;

Kaiser, DI ;

Maartens, R .

NUCLEAR PHYSICS B, 1999, 561 (1-2) :188-240

[9] Massless metric preheating [J].

Bassett, BA ;

Viniegra, F .

PHYSICAL REVIEW D, 2000, 62 (04) :1-7

[10] DISSIPATION VIA PARTICLE-PRODUCTION IN SCALAR FIELD-THEORIES [J].

BOYANOVSKY, D ;

DEVEGA, HJ ;

HOLMAN, R ;

LEE, DS ;

SINGH, A .

PHYSICAL REVIEW D, 1995, 51 (08) :4419-4444

← 1 2 3 4 5 6 7 8 9 →