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arXiv 1604.03120hep-thgr-qchep-ph
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IIB型弦模型中的Affleck-Dine重子生成

Affleck-Dine Baryogenesis in Type IIB String Models

Rouzbeh Allahverdi, Michele Cicoli, Francesco Muia

摘要:

我们提出了一个可行的字符串嵌入的阿弗莱克-代恩重子生成在IIB型隔离模型中,最轻的模量的后期衰变重新加热宇宙到相对较低的温度。我们表明,如果通货膨胀是由爆破Kaehler模驱动,阿弗莱克-Dine场可以成为快子在通货膨胀过程中,如果Kaehler度量的物质领域有一个适当的依赖于膨胀的贡献。我们发现,阿弗莱克Dine机制可以产生所观察到的重子不对称性的基础参数的自然值,这也导致成功的通货膨胀和低能量的高吉诺质量在分裂超对称的情况下。最轻模量衰变的再加热温度足够高,可以产生热希格斯诺状的暗物质。

英文摘要:

We present a viable string embedding of Affleck-Dine baryogenesis in type IIB sequestered models where the late-time decay of the lightest modulus reheats the universe to relatively low temperatures. We show that if inflation is driven by a blow-up Kaehler modulus, the Affleck-Dine field can become tachyonic during inflation if the Kaehler metric for matter fields has an appropriate inflaton-dependent contribution. We find that the Affleck-Dine mechanism can generate the observed baryon asymmetry for natural values of the underlying parameters which lead also to successful inflation and low-energy gaugino masses in a split supersymmetry scenario. The reheating temperature from the lightest modulus decay is high enough to allow thermal Higgsino-like dark matter.

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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