Nonthermal production of gravitinos and inflatinos

被引:85
作者
Nilles, HP
Peloso, M
Sorbo, L
机构
[1] Univ Bonn, Inst Phys, D-53115 Bonn, Germany
[2] SISSA, ISAS, I-34013 Trieste, Italy
[3] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy
关键词
D O I
10.1103/PhysRevLett.87.051302
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We explicitly calculate nonthermal gravitino production during the preheating period in the inflationary Universe. Contrary to earlier investigations, we consider a two-field model to separate the mechanisms of supersymmetry breaking and inflation. We show that the superpartner of the inflaton is significantly generated, while the gravitino production is considerably smaller. Nonthermal production of gravitinos seems thus less worrisome than recently claimed.
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页数:4
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