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arXiv 1109.4495hep-thgr-qchep-ph
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超对称以太

Supersymmetric Aether

Oriol Pujolas, Sergey Sibiryakov

摘要:

格鲁特·尼伯林克和波斯佩洛夫提出,洛伦兹不变性可以是低能物理学的一种涌现对称性,前提是该理论享有超对称性的非相对论版本。我们构建了一个模型,实现后者的对称性动态:它打破了洛伦兹不变性,但留下的超对称发电机完好无损。该模型是Jacobson和Mattingly的动力学以太理论的超对称扩展。它表现出丰富的动力学性质,具有一族实现不同对称破缺模式的不等价真空。特别是,我们发现稳定的真空自发地打破空间各向同性。超对称破缺项给予以太场的费米子和玻色子伙伴质量。我们评论的耦合模型的超引力和Horava引力的影响。

英文摘要:

It has been suggested by Groot Nibbelink and Pospelov that Lorentz invariance can be an emergent symmetry of low-energy physics provided the theory enjoys a non-relativistic version of supersymmetry. We construct a model that realizes the latter symmetry dynamically: it breaks Lorentz invariance but leaves the supersymmetry generators intact. The model is a supersymmetric extension of the dynamical aether theory of Jacobson and Mattingly. It shows rich dynamics and possesses a family of inequivalent vacua realizing different symmetry breaking patterns. In particular, we find stable vacua that break spontaneously spatial isotropy. Supersymmetry breaking terms give masses to fermionic and bosonic partners of the aether field. We comment on the coupling of the model to supergravity and on the implications for Horava gravity.

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