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arXiv 1209.4252hep-phhep-th
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具有瞬态畴壁的自发宇称破缺、规范耦合统一和相容宇宙学

Spontaneous Parity Breaking, Gauge Coupling Unification and Consistent Cosmology with Transitory Domain Walls

Debasish Borah

摘要:

瞬态畴壁的形成在离散对称性自发破缺的理论中是相当普遍的。由于这些墙与宇宙学相冲突,必须有某种机制使它们消失。我们研究这样的机制,将普朗克尺度抑制运营商的框架内的左右对称模型(LRSM)的左右宇称(D宇称)是自发打破。我们发现,这种机制不能使壁消失在最小版本的LRSM。我们提出了这个模型的两个可行的扩展,并表明普朗克尺度抑制运营商可以引起成功消失的畴壁提供的规模的宇称破缺服从一定的限制。我们还限制宇称破缺的规模,要求成功的规范耦合统一,并作出统一和宇宙学界限的比较。

英文摘要:

Formation of transitory domain walls is quite generic in theories with spontaneous breaking of discrete symmetries. Since these walls are in conflict with cosmology, there has to be some mechanism which makes them disappear. We study one such mechanism by incorporating Planck scale suppressed operators within the framework of Left-Right Symmetric Models (LRSM) where Left-Right parity (D parity) is spontaneously broken. We find that this mechanism can not make the walls disappear in minimal versions of LRSM. We propose two viable extensions of this model and show that Planck scale suppressed operators can give rise to successful disappearance of domain walls provided the scale of parity breaking obeys certain limits. We also constrain the scale of parity breaking by demanding successful gauge coupling unification and make a comparison of the unification and cosmology bounds.

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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