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arXiv · 0912.1933

Chiral magnetic effect (CME) at low temperature from instanton vacuum

Seung-il Nam
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Abstract

In this talk, we report our present work on the chiral magnetic effect (CME) under a strong magnetic field at low temperature. To this end, we use the instanton vacuum with the finite instanton-number fluctuation Delta, which relates to the nontrivial topological charge Q_t. We compute the vacuum expectation values of the local chiral density , chiral charge density and induced electromagnetic current . We observed that the longitudinal EM current is much larger than the transverse one, |j_perp/j_parallel| ~ Q_t, and the equals to the | |. It also turns out that the CME becomes insensitive to the magnetic field as T increases, since the instanton effect decreases.

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Seung-il Nam. 2009-12-10. Chiral magnetic effect (CME) at low temperature from instanton vacuum. https://doi.org/10.1142/9789814313933_0013

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