Spin interactions in mesons in strong magnetic field

Abstract

Spin interactions in relativistic quark-antiquark system in magnetic field is considered in the framework of the relativistic Hamiltonian, derived from the QCD path integral. The formalism allows to separate spin-dependent terms from the basic spin-independent interaction, contained in the Wilson loop, and producing confining and gluon exchange interaction. As a result one obtains relativistic spin-spin interaction $V_{ss}$, generalizing its nonrelativistic analog. It is shown, that in large magnetic field $eB,V_{ss}$ modifies and produces hyperfine shifts which grow linearly with $eB$ and preclude the use of perturbation theory. We also show, that tensor forces for $eB\ne 0$ are active in all meson states, but do not grow with $eB$

26 pages

References in corpus (6)

• Chiral symmetry restoration, eigenvalue density of Dirac operator and axial U(1) anomaly at finite temperature
• Decay constants of the heavy-light mesons from the field correlator method
• Relativistic path integral and relativistic Hamiltonians in QCD and QED
• Spin-dependent interactions in quarkonia
• Quark-Antiquark System in Ultra-Intense Magnetic Field
• Dynamical suppression of the spin-orbit interaction in hadrons

Cited by in corpus (20)

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• Neutron in Strong Magnetic Fields
• Chiral physics in the magnetic field with quark confinement contribution
• Recoupling Mechanism for exotic mesons and baryons
• Boosting QED and QCD bound states in the path integral formalism
• Magnetic test of chiral dynamics in QCD
• QED spectra in the path integral formalism
• Magnetic susceptibility at zero and nonzero chemical potential in QCD and QED
• Nonperturbative approach to the parton model
• Magnetic focusing in atomic, nuclear and hadronic processes
• Relativistic dynamics of charmonia in strong magnetic fields
• Quark condensate in QCD at nonzero magnetic field and temperature
• Lepton decay constants of light mesons
• Hadron wave functions in high-energy scattering, form factors and strong decays: the effects of the Lorentz contracted form
• Mesons in ultra-intense magnetic field: an evaded collapse
• Nonperturbative parton distributions and the proton spin problem