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arXiv 0709.1786hep-ph
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超引力中的膨胀子衰变与引力子问题

Inflaton Decay in Supergravity and Gravitino Problem

Fuminobu Takahashi

摘要:

我们最近已经证明,如果暴胀子有一个非零的真空期望值,它一般耦合到任何物质场,出现在超势在树的水平,并通过超引力异常的任何规范部门。通过这些过程,暴胀子衰变到超对称破缺扇区,产生许多引力子。暴胀子也直接衰变成一对引力子。考虑到这些过程中,我们得到的限制通货膨胀模型和超对称性破缺的情况下,以避免生产过剩的引力子。

英文摘要:

We have recently shown that, if the inflaton has a nonzero vacuum expectation value, it generically couples to any matter fields that appear in the superpotential at the tree level, and to any gauge sectors through anomalies in the supergravity. Through these processes, the inflaton decays into the supersymmetry breaking sector, producing many gravitinos. The inflaton also directly decays into a pair of the gravitinos. Taking account of these processes, we derive constraints on both inflation models and supersymmetry breaking scenarios for avoiding overproduction of the gravitinos.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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