Reviews of topical problems

Hadron physics in magnetic fields

 a,  b, c, a,  a
a National Research Center "Kurchatov Institute", Alikhanov Institute of Theoretical and Experimental Physics, ul. B. Cheremushkinskaya 25, Moscow, 117218, Russian Federation
b Moscow Institute of Physics and Technology (National Research University), Institutskii per. 9, Dolgoprudny, Moscow Region, 141701, Russian Federation
c Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation

We propose a new approach to exploring relativistic compound systems in the external magnetic field. A relativistic Hamiltonian that includes confinement, one-gluon exchange, and spin—spin interaction has been obtained using path integral formalism. The masses of the quark—antiquark states that correspond at zero magnetic field to $\rho$- and $\pi$-meson and neutron mass have been calculated as a function of the magnetic field. The most interesting phenomena occur in super-strong magnetic fields of the order of $10^{18} - 10^{20}$ G that emerge for a short time in peripheral collisions of relativistic heavy ions.

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Fulltext is also available at DOI: 10.3367/UFNe.2019.02.038526
Keywords: relativistic Hamiltonian, quark—antiquark system, magnetic field, pseudo-momentum, color Coulomb and spin—spin interactions, regularization, constituent separation method
PACS: 12.39.−x, 14.40.−n, 11.15.Tk (all)
DOI: 10.3367/UFNe.2019.02.038526
Citation: Andreichikov M A, Kerbikov B O, Simonov Yu A "Hadron physics in magnetic fields" Phys. Usp. 62 319–339 (2019)
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Received: 14th, December 2017, revised: 30th, January 2019, 8th, February 2019

Оригинал: Андрейчиков М А, Кербиков Б О, Симонов Ю А «Физика адронов в магнитном поле» УФН 189 337–358 (2019); DOI: 10.3367/UFNr.2019.02.038526

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