Article

The Influence of an External Chromomagnetic Field on Color Superconductivity

Physical Review D (Impact Factor: 4.69). 06/2001; DOI: 10.1103/PhysRevD.65.054024
Source: arXiv

ABSTRACT We study the competition of quark-antiquark and diquark condensates under the influence of an external chromomagnetic field modelling the gluon condensate and in dependence on the chemical potential and temperature. As our results indicate, an external chromomagnetic field might produce remarkable qualitative changes in the picture of the color superconducting (CSC) phase formation. This concerns, in particular, the possibility of a transition to the CSC phase and diquark condensation at finite temperature. Comment: 27 pages, RevTex, 8 figures; the version accepted for the publication in PRD (few references added; new numerical results added; main conclusions are not changed)

0 Bookmarks
 · 
45 Views
  • [Show abstract] [Hide abstract]
    ABSTRACT: We review some recent results about the exploration of strong interactions in presence of external background fields by means of lattice QCD simulations. We discuss in particular studies concerning the influence of the external fields on the non-perturbative properties of the QCD vacuum and of the QCD phase diagram.
    Journal of Physics Conference Series 04/2013; 432(1):2004-.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The properties of two-flavored massive Nambu--Jona-Lasinio model in (1+1)-dimensional spacetime are investigated in the presence of isospin and quark number chemical potentials. The consideration is performed in the large-$N_c$ limit, where $N_c$ is the number of colored quarks. It is shown in the framework of this model that charged pion condensation phenomenon of dense quark/hadron isotopically asymmetric matter is rather a spatially inhomogeneous than a homogeneous one.
    Physical review D: Particles and fields 06/2012; 86(8).
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The zeta function regularization technique is used to study the finite temperature Casimir effect for a charged and massless scalar field confined between parallel plates and satisfying Dirichlet boundary conditions at the plates. A magnetic field perpendicular to the plates is included. Three equivalent expressions for the zeta function are obtained, which are exact to all orders in the magnetic field strength, temperature and plate distance. These expressions of the zeta function are used to calculate the Helmholtz free energy of the scalar field and the pressure on the plates, in the case of high temperature, small plate distance and strong magnetic field. In all cases, simple analytic expressions are obtained for the free energy and pressure which are accurate and valid for practically all values of temperature, plate distance and magnetic field.
    Physical Review D 04/2013; 88(10). · 4.69 Impact Factor

Full-text

View
0 Downloads
Available from