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arXiv 1004.5596hep-phastro-ph.COgr-qchep-th
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洛伦兹不变性自发破坏的有效理论探讨

Effective Theory Approach to the Spontaneous Breakdown of Lorentz Invariance

Cristian Armendariz-Picon, Alberto Diez-Tejedor, Riccardo Penco

摘要:

我们推广的陪集建设的Callan,科尔曼,韦斯和Zumino的理论中,洛伦兹群是自发分解到它的一个子群。这使我们能够写下最一般的低能有效拉格朗日量,其中洛伦兹不变性是非线性实现的,并探索洛伦兹对称性破缺的后果,而不必对触发破缺的机制做出任何假设。我们在平坦的空间中进行构造,其中洛伦兹群是全局时空对称,并且在一般协变理论中,洛伦兹群可以被视为局部内部对称。作为这种形式的一个例证,我们构造了旋转群保持不间断的最一般的有效场论,并证明了后者就是爱因斯坦-以太理论。

英文摘要:

We generalize the coset construction of Callan, Coleman, Wess and Zumino to theories in which the Lorentz group is spontaneously broken down to one of its subgroups. This allows us to write down the most general low-energy effective Lagrangian in which Lorentz invariance is non-linearly realized, and to explore the consequences of broken Lorentz symmetry without having to make any assumptions about the mechanism that triggers the breaking. We carry out the construction both in flat space, in which the Lorentz group is a global spacetime symmetry, and in a generally covariant theory, in which the Lorentz group can be treated as a local internal symmetry. As an illustration of this formalism, we construct the most general effective field theory in which the rotation group remains unbroken, and show that the latter is just the Einstein-aether theory.

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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