We study the static potential between external quark-antiquark pairs in a strongly coupled gauge theory with a large number of colors and massive dynamical flavors, using a dual string description. When the constituent mass of the dynamical quarks is set below a certain critical value, we find a first order phase transition between a linear and a Coulomb-like regime. Above the critical mass the two phases are smoothly connected. We also study the dependence on the theory parameters of the quark-antiquark separation at which the static configuration decays into specific static-dynamical mesons.
Heavy-quark potential with dynamical flavors: A first-order transition / Bigazzi, Francesco; Cotrone, Aldo L.; Núñez, Carlos; Paredes, Angel. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 78:(2008), pp. 114012-114016. [10.1103/PhysRevD.78.114012]
Heavy-quark potential with dynamical flavors: A first-order transition
COTRONE, ALDO LORENZO;
2008
Abstract
We study the static potential between external quark-antiquark pairs in a strongly coupled gauge theory with a large number of colors and massive dynamical flavors, using a dual string description. When the constituent mass of the dynamical quarks is set below a certain critical value, we find a first order phase transition between a linear and a Coulomb-like regime. Above the critical mass the two phases are smoothly connected. We also study the dependence on the theory parameters of the quark-antiquark separation at which the static configuration decays into specific static-dynamical mesons.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.