Chiral magnetic effect (CME) at low temperature from instanton vacuum
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 Qt. We compute the vacuum expectation values of the local chiral density <rhochi>, chiral charge density <nchi> and induced electromagnetic current <jmu>. We observed that the longitudinal EM current is much larger than the transverse one, |jperp/jparallel| ~ Qt, and the <nchi> equals to the |<j(3,4)>|. It also turns out that the CME becomes insensitive to the magnetic field as T increases, since the instanton effect decreases.
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.