Tensor supercurrent in QCD
Abstract
An external Abelian magnetic field excites in the QCD vacuum a tensor super current that represents the tensor polarization of the chiral condensate. This tensor supercurrent can be deduced from the chiral lagrangian in the presence of anoma lies; a similar tensor supercurrent emerges in rotating systems at finite chemical potential. We discuss the microscopic origin of this supercurrent and argue that it screens the instanton-anti-instanton $$I\overline I$$ molecules in the QCD vacuum, similarly to the vector supercurrent screening Abrikosov vortices in a superconductor. A number of possible experimental manifestations of the tensor supercurrent are discussed: i) spin alignment of axial-vector and vector mesons in heavy ion collisions; ii) tensor charge of the nucleon; iii) transversity of quark distributions in polarized nucleons.
- Authors:
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); Basis Foundation; Russian Foundation for Basic Research (RFBR)
- OSTI Identifier:
- 1631499
- Alternate Identifier(s):
- OSTI ID: 1638821
- Report Number(s):
- BNL-216148-2020-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; 114002
- Grant/Contract Number:
- FG-88ER40388; AC02-98CH10886; SC0012704; 19-02-00214
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 101 Journal Issue: 11; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Gorsky, Alexander S., and Kharzeev, Dmitri E. Tensor supercurrent in QCD. United States: N. p., 2020.
Web. doi:10.1103/PhysRevD.101.114002.
Gorsky, Alexander S., & Kharzeev, Dmitri E. Tensor supercurrent in QCD. United States. https://doi.org/10.1103/PhysRevD.101.114002
Gorsky, Alexander S., and Kharzeev, Dmitri E. Tue .
"Tensor supercurrent in QCD". United States. https://doi.org/10.1103/PhysRevD.101.114002.
@article{osti_1631499,
title = {Tensor supercurrent in QCD},
author = {Gorsky, Alexander S. and Kharzeev, Dmitri E.},
abstractNote = {An external Abelian magnetic field excites in the QCD vacuum a tensor super current that represents the tensor polarization of the chiral condensate. This tensor supercurrent can be deduced from the chiral lagrangian in the presence of anoma lies; a similar tensor supercurrent emerges in rotating systems at finite chemical potential. We discuss the microscopic origin of this supercurrent and argue that it screens the instanton-anti-instanton $I\overline I$ molecules in the QCD vacuum, similarly to the vector supercurrent screening Abrikosov vortices in a superconductor. A number of possible experimental manifestations of the tensor supercurrent are discussed: i) spin alignment of axial-vector and vector mesons in heavy ion collisions; ii) tensor charge of the nucleon; iii) transversity of quark distributions in polarized nucleons.},
doi = {10.1103/PhysRevD.101.114002},
journal = {Physical Review D},
number = 11,
volume = 101,
place = {United States},
year = {2020},
month = {6}
}
https://doi.org/10.1103/PhysRevD.101.114002
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