夸克物质.ppt

Color Superconductivity: Recent developments Qun Wang Department of Modern Physics China University of Science and Technology Quark Matter 2006, Shanghai Nov 2006 Outline Some concepts of CSC Neutrino emissions in CSC BCS-BEC crossover in CSC QCD: From Paradox to Paradigm Color Confinement DeConfinement: Quark Matter QCD phase diagram Quark Matter in Compact Star Unconventional pairings Pairings between quarks with non-equal Fermi momenta [See Mei Huang’s talk] Neutrino emissions in CSC Cooling curve for NS Phase space for Urca Neutrino emissivity for S=1 CSC Gaps in S=0 are large leading to slow cooling; [Alford et al, 2005; Anglani et al, 2006] Normal state: fast cooling; Gaps in S=1 are small right to describe data. [Schafer, 2000; Schmitt, Wang, Rischke, 2003] Spatial Asymmetry in neutrino emissions in A phase Neutrino emissivity in S=1 phases BCS-BEC crossover in relativistic superfluid Superfluids:Weak and Strong Couplings BCS-BEC crossover in relativistic superfluids: fermion-boson model Results: T=0 Results: T=Tc Results: particle fractions vs T/Tc Results: at unitary limit Summary CSC is a developing area in particle and nuclear physics Driven by recent findings at RHIC, strongly coupled CSC will be the next direction to go Searching for signals of CSC in compact star and high baryon region in heavy ion collisions are the future goal [Randup’s talk], but it is as challenging as to pin down QGP * David J. Gross H. David Politzer Frank Wilczek for the discovery of asymptotic freedom in the theory of the strong interaction The Nobel Prize in Physics 2004 Yang-Mills and Mass gap -- A Millenium Problem ($1,000,000) Clay Mathematics Institute -- Officially described by A. Jaffe E. Witten ◆ Compress heat nuclear matter: formation of QM ◆ QM in our Universe ▲Compact Star ▲First few seconds after big bang Dense Quark Matter High-T Quark Matter