Supersymmetry breaking in spatially modulated vacua
Supersymmetry breaking in spatially modulated vacua
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DOI：
10.1103/physrevd.96.105022
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发表时间：
2017-06
影响因子：
5
通讯作者：
M. Nitta;S. Sasaki;Ryo Yokokura
中科院分区：
文献类型：
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作者：
M. Nitta;S. Sasaki;Ryo Yokokura
研究了超对称场论中空间调制稳定或亚稳定真空中的自发超对称破缺。这种空间调制可以在高导数手性模型中实现，根据模型参数的不同，该模型的真空能为正、负或零。出现了一个与平移和$U(1)$对称性自发破缺有关的Nambu-Goldstone玻色子，该玻色子没有二次动力学项，在调制方向上具有四次导数项，并且出现了一个无间隙希格斯模。我们证明了在能量为正的亚稳定真空中出现与超对称破缺相关的Goldstino，而它在负能量真空中变成费米子幽灵，在零能量真空中变成零范数状态并从物理部门消失。
We study spontaneous supersymmetry breaking in spatially modulated stable or meta-stable vacua in supersymmetric field theories. Such spatial modulation can be realized in a higher derivative chiral model for which vacuum energies are either positive, negative or zero, depending on the model parameters. There appears a Nambu-Goldstone boson associated with the spontaneously breaking of the translational and $U(1)$ symmetries without the quadratic kinetic term and with a quartic derivative term in the modulated direction, and a gapless Higgs mode. We show that there appears a Goldstino associated with the supersymmetry breaking at a meta-stable vacuum, where energy is positive, while it becomes a fermionic ghost in the negative energy vacuum, and zero norm state and disappears from the physical sector in the zero energy vacuum.