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Relativistic BCS-BEC crossover in a boson-fermion model
Jian Deng, Andreas Schmitt, Qun Wang
We investigate the crossover from Bardeen-Cooper-Schrieffer (BCS) pairing to a Bose-Einstein condensate (BEC) in a relativistic superfluid within a boson-fermion model. The model i…
Stress-free BCS pairing in color superconductors is impossible
Krishna Rajagopal, Andreas Schmitt
Cold, asymptotically dense three-flavor quark matter is in the color-flavor locked (CFL) phase, in which all quarks pair in a particularly symmetric fashion. At smaller densities,…
Bulk viscosity in 2SC quark matter
Mark G. Alford, Andreas Schmitt
The bulk viscosity of three-flavor color-superconducting quark matter originating from the nonleptonic process u+s <-> u+d is computed. It is assumed that up and down quarks form C…
Stability conditions and Fermi surface topologies in a superconductor
Elena Gubankova, Andreas Schmitt, Frank Wilczek
Candidate homogeneous, isotropic superfluid or superconducting states of paired fermion species with different chemical potentials, can lead to quasiparticle excitation energies th…
Stressed pairing in conventional color superconductors is unavoidable
Krishna Rajagopal, Andreas Schmitt
At sufficiently high densities, cold dense three-flavor quark matter is in the color-flavor locked (CFL) phase, in which all nine quarks pair in a particularly symmetric fashion. O…