München 2006 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 51: Kern- und Teilchen-Astrophysik
HK 51.4: Vortrag
Donnerstag, 23. März 2006, 17:45–18:00, E
Absence of local diquark-gluon interactions in color superconductivity — •Jorge Noronha1, Hai-cang Ren2,3, Ioannis Giannakis2, Defu Hou3, and Dirk Rischke1,4 — 1Frankfurt Institute for Advanced Studies, J.W. Goethe-Universität, D-60438, Frankfurt am Main, Germany — 2Physics Department, The Rockefeller University, 1230 York Avenue, New York, NY 10021-6399, USA — 3Institute of Particle Physics, Huazhong Normal University, 430079 Wuhan, China — 4Institut für Theoretische Physik,J.W. Goethe-Universität, D-60438, Frankfurt am Main, Germany
We have consistently calculated the effects of gauge field fluctuations on the free energy of a homogeneous CFL color superconductor in the Hartree-Fock approximation. We numerically evaluated the temperature of the fluctuation induced first-order phase transition and the discontinuity of the diquark condensate at the critical point. The superheated (supercooled) temperature and the latent heat associated with the first-order phase transition were also obtained. We found that the absence of the London limit of magnetic interactions in color superconductivity is a striking new physical consequence of the long-range interaction mediated by magnetic gluons. The crossover from non-local to local interactions near the critical temperature in superconducting metals has been recently measured. Our results rule out the possibility of observing such a crossover in color superconductors.