Результаты исследований: Научные публикации в периодических изданиях › статья
Spontaneous violation of spatial parity in dense baryonic matter in a generalized U(2)L×U(2)R sigma model. / Andrianov, A.A.; Andrianov, V.A.
в: Theoretical and Mathematical Physics, Том 175, № 3, 2013, стр. 727-734.Результаты исследований: Научные публикации в периодических изданиях › статья
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TY - JOUR
T1 - Spontaneous violation of spatial parity in dense baryonic matter in a generalized U(2)L×U(2)R sigma model
AU - Andrianov, A.A.
AU - Andrianov, V.A.
PY - 2013
Y1 - 2013
N2 - Based on a generalized U(2)L×U(2)R sigma model describing ground and excited states of scalar and pseudoscalar meson singlets and triplets, we investigate the conditions for spatial parity violation for dense baryonic matter in the hadron phase. We introduce ‘t Hooft-type vertices into the model for violating the U(1)A symmetry of quantum chromodynamics by the anomaly. At large values of the chemical potential, broken-parity states can appear in the model, which corresponds to condensation of pseudoscalar fields. We give the conditions on the parameters of the generalized sigma model that determine the transition to the phase with spontaneously broken parity. For different signs of the constants of two ‘t Hooft-type vertices, either pseudoscalar isotriplets or isosinglets undergo condensation.
AB - Based on a generalized U(2)L×U(2)R sigma model describing ground and excited states of scalar and pseudoscalar meson singlets and triplets, we investigate the conditions for spatial parity violation for dense baryonic matter in the hadron phase. We introduce ‘t Hooft-type vertices into the model for violating the U(1)A symmetry of quantum chromodynamics by the anomaly. At large values of the chemical potential, broken-parity states can appear in the model, which corresponds to condensation of pseudoscalar fields. We give the conditions on the parameters of the generalized sigma model that determine the transition to the phase with spontaneously broken parity. For different signs of the constants of two ‘t Hooft-type vertices, either pseudoscalar isotriplets or isosinglets undergo condensation.
KW - quantum chromodynamics
KW - scalar meson
KW - pseudoscalar meson
KW - spontaneous violation of spatialparity
U2 - 10.1007/s11232-013-0058-5
DO - 10.1007/s11232-013-0058-5
M3 - Article
VL - 175
SP - 727
EP - 734
JO - Theoretical and Mathematical Physics (Russian Federation)
JF - Theoretical and Mathematical Physics (Russian Federation)
SN - 0040-5779
IS - 3
ER -
ID: 7375248