Activated sphalerons and large extra dimensions
Activated sphalerons and large extra dimensions
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激活的角翼和大的额外维度
DOI：
10.1103/physrevd.66.047301
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发表时间：
2002
影响因子：
5
通讯作者：
T. Matsuda
中科院分区：
文献类型：
--
作者：
T. Matsuda
我们提出了一种新的情形，即重子数破坏可能发生在具有较大额外维度的模型中。我们的想法很有趣，因为低再加热温度的瘦子发生需要B+L破坏的替代来源，以将产生的轻子转换为重子。如果考虑一个具有中间紧凑半径的模型，则可以允许再加热温度高于传统的弱电相变的临界温度。我们的机制在这种情况下仍然很重要，因为它提供了相界，这是电弱重子发生的基本成分。
We present a new scenario for the baryon number violation that may take place in models with large extra dimensions. Our idea is interesting because leptogenesis with a low reheating temperature requires an alternative source of the B+L violation to convert the produced leptons into baryons. If one considers a model with an intermediate compactification radius, the reheating temperature may be allowed to become higher than the critical temperature of the conventional electroweak phase transition. Our mechanism is still important in this case, because it provides the phase boundary, which is an essential ingredient of the electroweak baryogenesis.