Magnetic polarizabilities of light mesons inSU(3)lattice gauge theory

Autor:	O. E. Solovjeva, E.V. Luschevskaya, O. V. Teryaev, Oleg Kochetkov
Rok vydání:	2015
Předmět:	Physics Nuclear and High Energy Physics Particle physics Meson High Energy Physics::Lattice Nuclear Theory High Energy Physics::Phenomenology Lattice field theory Pseudoscalar meson Magnetic field Pseudoscalar Quantum electrodynamics Lattice gauge theory Vector meson Ground state
Zdroj:	Nuclear Physics B. 898:627-643
ISSN:	0550-3213
Popis:	We investigate the ground state energies of neutral pseudoscalar and vector meson in SU(3)SU(3) lattice gauge theory in the strong abelian magnetic field. The energy of ρ0ρ0 meson with zero spin projection sz=0sz=0 on the axis of the external magnetic field decreases, while the energies with non-zero spins sz=−1sz=−1 and +1 increase with the field. The energy of π0π0 meson decreases as a function of the magnetic field. We calculate the magnetic polarizabilities of pseudoscalar and vector mesons for lattice volume 184. For ρ0ρ0 with spin |sz|=1|sz|=1 and π0π0 meson the polarizabilities in the continuum limit have been evaluated. We do not observe any evidence in favour of tachyonic mode existence.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::310796f35ee0d1f298395dd1f4a12e05 https://doi.org/10.1016/j.nuclphysb.2015.07.023 Zobrazit plný text záznamu Full Text from ScienceDirect