Production of fermions in models of string cosmology

被引：8

作者：

Brustein, R ^{[1
]}

Hadad, M

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[2] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

来源：

PHYSICS LETTERS B | 2000年 / 477卷 / 1-3期

关键词：

D O I：

10.1016/S0370-2693(00)00175-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Production of spin 1/2 fermions and gravitinos by the standard mechanism of amplification of quantum fluctuations during the dilaton-driven inflation phase in models of string cosmology is highly suppressed. Constraints on string cosmology models from gravitational production of gravitinos, contrary to expectations, are similar to constraints on other models. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：263 / 268

页数：6

共 22 条

[1]

Birrell N. D., 1984, QUANTUM FIELDS CURVE

[2] RELIC GRAVITATIONAL-WAVES FROM STRING COSMOLOGY [J].

BRUSTEIN, R ;

GASPERINI, M ;

GIOVANNINI, M ;

VENEZIANO, G .

PHYSICS LETTERS B, 1995, 361 (1-4) :45-51

[3] Cold and hot dark matter from single nonthermal relic [J].

Brustein, R ;

Hadad, M .

PHYSICAL REVIEW LETTERS, 1999, 82 (15) :3016-3019

[4] Particle production in string cosmology models [J].

Brustein, R ;

Hadad, M .

PHYSICAL REVIEW D, 1998, 57 (02) :725-740

[5]

Buonanno A, 1998, J HIGH ENERGY PHYS

[6] Vacuum fluctuations in axion-dilaton cosmologies [J].

Copeland, EJ ;

Easther, R ;

Wands, D .

PHYSICAL REVIEW D, 1997, 56 (02) :874-888

[7] Massless (pseudo-)scalar seeds of CMB anisotropy [J].

Durrer, R ;

Gasperini, M ;

Sakellariadou, M ;

Veneziano, G .

PHYSICS LETTERS B, 1998, 436 (1-2) :66-72

[8] PRIMORDIAL MAGNETIC-FIELDS FROM STRING COSMOLOGY [J].

GASPERINI, M ;

GIOVANNINI, M ;

VENEZIANO, G .

PHYSICAL REVIEW LETTERS, 1995, 75 (21) :3796-3799

[9] Pre-big-bang in string cosmology [J].

Gasperini, M. ;

Veneziano, G. .

ASTROPARTICLE PHYSICS, 1993, 1 (03) :317-339

[10]

Giudice GF, 1999, J HIGH ENERGY PHYS

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