标题： T 模型希格斯暴胀与亚稳态宇宙弦 显示英文标题

标题： T-Model Higgs Inflation and Metastable Cosmic Strings

摘要： 我们展示了在超对称（SUSY）左-右模型背景下亚稳态宇宙弦（CSs）的形成过程。 SU(2)R 对称性破缺发生在由SU(2)R三重超场驱动的T模型（希格斯）膨胀（TI）阶段，该膨胀消除了产生的单极子。 随后剩余的U(1)R x U(1)B-L 对称性的破缺，由于在一对SU(2)R双重超场系统中出现的不稳定性触发，导致了CSs的产生。 TI基于四次势能，在采用双曲Kähler几何的情况下与数据一致，并可能继之以成功的非热轻子生成。 产生的CSs的衰变解释了最近来自PTA实验关于引力波随机背景的观测，其超势耦合常数的值接近10^-6到10^-8，对称破缺尺度略低于SUSY大统一理论尺度。 如果μ的值比引力子质量低两到三个数量级，MSSM的μ问题也有解决方案。 还讨论了规范耦合统一的问题。 显示英文摘要

摘要： We present the formation of metastable cosmic strings (CSs) in the context of a supersymmetric (SUSY) left-right model. The SU(2)R symmetry breaking occurs during a stage of T-model (Higgs) inflation (TI) driven by an SU(2)R triplet superfield which inflates away the produced monopoles. The subsequent breaking of the remaining U(1)R x U(1)B-L symmetry, triggered due to an instability arising in the system of a pair of SU(2)R doublet superfields, leads to the production of CSs. TI is based on a quartic potential, is consistent with data thanks to the adopted hyperbolic Kaehler geometry and may be followed by successful non-thermal leptogenesis. The decay of produced CSs interprets the recent observations from PTA experiments on the stochastic background of gravitational waves with values of the superpotential coupling constants close to 10^-6-10^-8 and symmetry-breaking scales a little lower than the SUSY grand unified theory scale. A solution to the mu problem of the MSSM is also accommodated provided that mu is two to three orders of magnitude lower than the gravitino mass. The issue of the gauge coupling unification is also discussed.