Phase structure of QC2D at high temperature and density

We study two-color QCD with two flavors of Wilson fermion as a function of quark chemical potential mu and temperature T. We find evidence of a superfluid phase at intermediate mu and low T where the quark number density and diquark condensate are both very well described by a Fermi sphere of nearly...

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Bibliographic Details
Published in:arXiv.org 2012-10
Main Authors: Cotter, Seamus, Jon-Ivar Skullerud, Giudice, Pietro, Hands, Simon, Kim, Seyong, Mehta, Dhagash
Format: Article
Language:English
Subjects:
Chemical potential
Condensates
Density
Fermions
Flavor (particle physics)
Fluids
High temperature
Organic chemistry
Quantum chromodynamics
Quarks
Solid phases
Superfluidity
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Summary:We study two-color QCD with two flavors of Wilson fermion as a function of quark chemical potential mu and temperature T. We find evidence of a superfluid phase at intermediate mu and low T where the quark number density and diquark condensate are both very well described by a Fermi sphere of nearly-free quarks disrupted by a BCS condensate. This gives way to a region of deconfined quark matter at higher T and mu, with the deconfinement temperature decreasing only very slowly with increasing chemical potential. We find that heavy quarkonium bound states persist in the S-wave channels at all T and mu, with an energy reflecting the phase structure. P-wave states appear not to survive in the quarkyonic region.
ISSN:2331-8422