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Chiral-imbalance density wave in baryonic matters.
- Source :
-
Journal of Physics G: Nuclear & Particle Physics . Apr2020, Vol. 47 Issue 4, p1-15. 15p. - Publication Year :
- 2020
-
Abstract
- We propose a new chirality-imbalance phenomenon arising in baryonic/high density matters under a magnetic field. A locally chiral-imbalanced (parity-odd) domain can be created due to the electromagnetically induced U(1)A anomaly in high-density matters. The proposed local-chiral imbalance generically possesses a close relationship to a spatial distribution of an inhomogeneous chiral (pion)-vector current coupled to the magnetic field, in which the inhomogeneity is irrespective to the pion-domain wall configuration formed by neutral pion. To demonstrate such a nontrivial correlation, we take the skyrmion crystal approach to model baryonic/high density matters. Remarkably enough, we find the chirality-imbalance distribution can have a periodicity in a high density region, and that it looks specially propagating (dubbed 'chiral-imbalance density wave'), when the inhomogeneous chiral condensate develops to take a similar periodic distribution, so-called a chiral density wave. This implies the emergence of a nontrivial density wave for the explicitly broken U(1)A current simultaneously with the chiral density wave for the spontaneously broken chiral-flavor current. We further find that the topological phase transition in the skyrmion crystal model (between skyrmion and half-skyrmion phases) undergoes the deformation of the chiral-imbalance density wave in shape and periodicity. The emergence of this chiral-imbalance density wave could give a crucial contribution to studies on the chiral phase transition, as well as the nuclear matter structure, in compact stars under a magnetic field. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09543899
- Volume :
- 47
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Journal of Physics G: Nuclear & Particle Physics
- Publication Type :
- Academic Journal
- Accession number :
- 144774254
- Full Text :
- https://doi.org/10.1088/1361-6471/ab6c32