Universal dynamics of spontaneous Lorentz violation and a new spin-dependent inverse-square law force
Universal dynamics of spontaneous Lorentz violation and a new spin-dependent inverse-square law force
复制标题
自发洛伦兹破坏的普遍动力学和新的自旋相关平方反比定律力
DOI：
10.1088/1126-6708/2005/07/029
复制
发表时间：
2004
影响因子：
5.4
通讯作者：
J. Thaler
中科院分区：
文献类型：
--
作者：
N. Arkani;Hsin;M. Luty;J. Thaler
我们研究了与洛伦兹不变性自发破缺到空间旋转相关的普遍低能动力学。有效的拉格朗日相关的戈德斯通领域可以唯一地确定的非线性实现的破缺时间的同态对称性，一些整体的质量尺度。先前已经表明，这种对称性破缺模式会产生引力的希格斯相，其中引力在红外线中被修改。在本文中，我们研究了Goldstone玻色子和标准模型费米子之间的直接耦合的影响，这必然伴随着理论中的洛伦兹破坏项。主导相互作用是与轴向矢量流的耦合，在非相对论极限下，轴向矢量流简化为自旋。一个相对于以太静止框架运动的自旋将发射戈德斯通切伦科夫辐射。戈德斯通还在自旋源之间诱导了一种具有显著角度依赖性的长程平方反比定律力，反映了潜在的戈德斯通冲击波，并为这一理论提供了确凿的证据。我们讨论了政权的有效理论描述这些现象的有效性，并通过戈德斯通玻色子信号的方式，是互补的直接测试在某些地区的参数空间探测洛伦兹违规的可能性。
We study the universal low-energy dynamics associated with the spontaneous breaking of Lorentz invariance down to spatial rotations. The effective lagrangian for the associated Goldstone field can be uniquely determined by the non-linear realization of a broken time diffeomorphism symmetry, up to some overall mass scales. It has previously been shown that this symmetry breaking pattern gives rise to a Higgs phase of gravity, in which gravity is modified in the infrared. In this paper, we study the effects of direct couplings between the Goldstone boson and standard model fermions, which necessarily accompany Lorentz-violating terms in the theory. The leading interaction is the coupling to the axial vector current, which reduces to spin in the non-relativistic limit. A spin moving relative to the ``ether rest frame will emit Goldstone Cerenkov radiation. The Goldstone also induces a long-range inverse-square law force between spin sources with a striking angular dependence, reflecting the underlying Goldstone shockwaves and providing a smoking gun for this theory. We discuss the regime of validity of the effective theory describing these phenomena, and the possibility of probing Lorentz violations through Goldstone boson signals in a way that is complementary to direct tests in some regions of parameter space.
影响因子：
5.4
作者：
N. Arkani-Hamed;Hsin-Chia Cheng;M. Luty;S. Mukohyama;T. Wiseman
通讯作者：
N. Arkani-Hamed;Hsin-Chia Cheng;M. Luty;S. Mukohyama;T. Wiseman