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arXiv 1004.4658astro-ph.COhep-th
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宇宙对称破缺过程中的长寿命含时余项:从暴胀到电弱标度

Long-Lived Time-Dependent Remnants During Cosmological Symmetry Breaking: From Inflation to the Electroweak Scale

Marcelo Gleiser, Noah Graham, Nikitas Stamatopoulos

摘要:

通过在三维空间中的详细的数值研究,我们证明了长寿命的依赖于时间的场的配置动态出现在一个扩大的德西特时空对称性破缺。我们研究了两种情况:单标量场和双势阱以及SU(2)非阿贝尔Higgs模型的玻色子扇区。对于单标量,我们表明,大振幅的介子配置自发出现,并坚持贡献约1.2%的宇宙的能量密度。我们还表明,对于一系列的参数,电子的寿命增强的扩展,这种效果是参数共振的结果。对于SU(2)情形,我们看到约4%的最终能量密度在介子中。

英文摘要:

Through a detailed numerical investigation in three spatial dimensions, we demonstrate that long-lived time-dependent field configurations emerge dynamically during symmetry breaking in an expanding de Sitter spacetime. We investigate two situations: a single scalar field with a double-well potential and the bosonic sector of an SU(2) non-Abelian Higgs model. For the single scalar, we show that large-amplitude oscillon configurations emerge spontaneously and persist to contribute about 1.2% of the energy density of the universe. We also show that for a range of parameters, oscillon lifetimes are enhanced by the expansion and that this effect is a result of parametric resonance. For the SU(2) case, we see about 4% of the final energy density in oscillons.

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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