左右对称性破缺在引力波谱学中的印记：一个非最小模型案例研究

中文摘要 AI 辅助

我们在非最小版本的左右对称规范模型框架下研究了宇宙学相变的动力学。在高能标下，该框架具有 $SU(2)_L \otimes SU(2)_{R} \otimes U(1)_R \otimes U(1)_L$ 对称性，源自大统一群 $E_6$。该模型丰富的标量扇区为研究一级相变提供了有趣的机会，一级相变可以成为随机引力波的来源。考虑到适用于该模型的理论和实验约束，我们寻找在 $SU(2)_{R} \otimes U(1)_R \otimes U(1)_L$ 破缺到 $U(1)_Y$ 过程中、能标为数十 TeV 或更高时可能观测到一级相变的基准参数。我们的研究揭示了在参数空间的大范围内存在强一级相变的可能性。我们还讨论了由这种强一级相变产生的随机引力波。我们的结果提供了清晰、可检验的预言，这些预言直接落在正在进行的和下一代引力波天文台（如 LISA、DECIGO、AEDGE 和 $\mu$ARES）的灵敏度带内。

英文摘要

We investigate the dynamics of cosmological phase transition in the framework of a non-minimal version of Left-Right symmetric gauge model. At a high energy scale, this framework having the symmetry $SU(2)_L \otimes SU(2)_{R} \otimes U(1)_R \otimes U(1)_L$, is stemmed out from the Grand Unifying group $E_6$. Rich scalar sector of this model offers interesting opportunity for studying first order phase transition which can be the source of stochastic gravitational waves. Taking into account the theoretical and experimental constraints applicable to this model, we look for benchmark parameters where first order phase transition could be observed during the breaking of $SU(2)_{R} \otimes U(1)_R \otimes U(1)_L$ down to $U(1)_Y$, at an energy scale of tens of TeVs or higher. Our investigation reveals the possibility of strong first order phase transition over a large region of parameter space. We also discuss the production of stochastic gravitational waves arising from such strong first order phase transition. Our results present clear, testable predictions that fall directly within the sensitivity bands of ongoing and next-generation gravitational-wave observatories like LISA, DECIGO, AEDGE and $μ$ARES.

发表机构

• Centre for Theoretical Physics, Jamia Millia Islamia（贾米阿米尔亚伊斯兰大学理论物理中心）
• SGTB Khalsa College, University of Delhi（德里大学SGTB卡尔萨学院）
• Department of Physics and Astrophysics, University of Delhi（德里大学物理与天体物理学系）
• Department of Physics, University of Calcutta（加尔各答大学物理系）

机构由 AI 辅助整理，请以论文原文为准。

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34 pages, 6 figures, 3 table