由费米子诱导的辐射修正得到的支子稳定化
Branon stabilization from fermion-induced radiative corrections
摘要：
我们考虑一个3-膜嵌入在5维时空的高斯弯曲因子，四维有效理论的膜波动（branons）是不稳定的。我们表明，辐射修正所产生的费米子生活在膜上，因此耦合到branons，稳定系统动态生成一个自发对称性破缺的branon字段。相应的机制是一致的，要付出的代价是有大量的费米子的味道，我们讨论的脂肪膜的情况下，作为一种解释的穿着branon理论，考虑到麦克斯韦建设，这避免了旋节不稳定性存在于微扰有效势。
英文摘要：
We consider a 3-brane embedded in 5-dimensional space time characterized by a Gaussian warp factor, for which the four-dimensional effective theory for brane fluctuation (branons) is unstable. We show that radiative corrections arising from fermions living on the brane, and therefore coupled to branons, stabilize the system by generating dynamically a spontaneous symmetry breaking for the branon field. The price to pay, for the corresponding mechanism to be consistent, is to have a large number of fermion flavours, and we discuss the fat brane scenario as an interpretation for the dressed branon theory, taking into account the Maxwell construction, which avoids the spinodal instability present in the perturbative effective potential.
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