Heavy gravitino in hybrid inflation

被引：3

作者：

Kawasaki, Masahiro ^{[1
,2
]}

Kitajima, Naoya ^{[1
]}

Nakayama, Kazunori ^{[2
,3
]}

Yanagida, Tsutomu T. ^{[2
]}

机构：

[1] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan

[2] Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778568, Japan

[3] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2013年 / 06期

基金：

日本学术振兴会;

关键词：

inflation; particle physics - cosmology connection; supersymmetry and cosmology; cosmology of theories beyond the SM; SUPERSYMMETRIC INFLATION; OVERPRODUCTION; CONSTRAINTS; MODEL; MASS;

D O I：

10.1088/1475-7516/2013/06/037

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is known that supersymmetric hybrid inflation model may require severe tunings on the initial condition for large gravitino mass of order 100 - 1000 TeV due to the constant term in the superpotential. We propose a modified hybrid inflation model, where the constant term is suppressed during inflation and generated after inflation by replacing a constant term with dynamical field. In this modified model, successful inflation consistent with large gravitino mass takes place without severe tunings on the initial condition. Constraint from cosmic strings is also relaxed.

引用

页数：16

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