Tensor supercurrent in QCD
- Institute for Information Transmission Problems of the Russian Academy of Sciences, Moscow (Russia); Moscow Institute of Physics and Technology, Dolgoprudny (Russia)
- Stony Brook University, NY (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
An external Abelian magnetic field excites in the QCD vacuum a tensor supercurrent that represents the tensor polarization of the chiral condensate. This tensor supercurrent can be deduced from the chiral Lagrangian in the presence of anomalies; 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 molecules II¯ 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.
- Research Organization:
- Stony Brook Univ., NY (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP); Basis Foundation; Russian Foundation for Basic Research (RFBR)
- Grant/Contract Number:
- FG02-88ER40388; AC02-98CH10886; FG-88ER40388; SC0012704; 19-02-00214
- OSTI ID:
- 1631499
- Alternate ID(s):
- OSTI ID: 1638821; OSTI ID: 2280529
- Report Number(s):
- BNL-216148-2020-JAAM; TRN: US2408189
- Journal Information:
- Physical Review. D., Vol. 101, Issue 11; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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