期刊
PHYSICAL REVIEW D
卷 86, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.86.045001
关键词
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资金
- Spanish national Project [FIS2011-23713, FIS2008-00124]
- Brazilian Project [PIB2010BZ-00512]
In Lorentz violating quantum electrodynamics (QED) it is known that a radiatively induced Chern-Simons term appears in the effective action for the gauge field, which is finite but undetermined. This ambiguity is shown to be absent in a condensed matter realization of such a theory in Weyl semi-metals due to the existence of a full microscopic model from which this effective theory emerges. Physically observable consequences such as birefringence are also discussed in this scenario.
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