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- W2556637561 abstract "In the theory of the chiral anomaly in relativistic quantum field theories (RQFT) some results depend on regularization scheme at ultraviolet. In the chiral superfluid 3He-A, which contains two Weyl points and also experiences the effects of chiral anomaly, the trans-Planckian physics is known and the results can be obtained without regularization. We discuss this on example of the chiral magnetic effect (CME), which has been observed in 3He-A in 90's. There are two forms of the contribution of the CME to the Chern-Simons term in free energy, perturbative and non-perturbative. The perturbative term comes from the fermions living in the vicinity of the Weyl point, where the fermions are relativistic and obey the Weyl equation. The non-perturbative term originates from the deep vacuum, being determined by the separation of the two Weyl points. Both terms are obtained using the Adler-Bell-Jackiw equation for chiral anomaly, and both agree with the results of the microscopic calculations in the trans-Planckian region. Existence of the two nonequivalent forms of the Chern-Simons term demonstrates that the results obtained within the RQFT depend on the specific properties of the underlying quantum vacuum and may reflect different physical phenomena in the same vacuum." @default.
- W2556637561 created "2016-11-30" @default.
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- W2556637561 date "2017-01-01" @default.
- W2556637561 modified "2023-10-10" @default.
- W2556637561 title "On the chiral magnetic effect in Weyl superfluid 3He-A" @default.
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- W2556637561 doi "https://doi.org/10.1134/s0021364017010076" @default.
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