Particles, Astrophysics, and Nuclear Physics Seminar

Color Superconductivity at High Baryon Density

Professor Hai-cang Ren

Rockefeller University

A cold quark matter at high baryon density is unstable against Cooper pairing because of the attractive force mediated by the one-gluon exchange in the color anti-symmetric channel. The transition temperature to the superconducting phase is determined perturbatively. On account of the long range propagation of magnetic gluons, the scaling behavior of the transition temperature and the energy gap are characterized by a non-BCS exponent and a substantial suppression of the pre-exponential factor in comparison with that for a point-interaction. The same mechanism also makes the pairing with a nonzero angular momentum more significant, especially in a crystalline order. The implications on the quark matter at accessible baryon densities in RHIC or inside a neutron star are discussed.

Wednesday, July 24, 2002
11:00 AM
Gant Science Complex
Physics Department
Room P121


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