The onset and deconfinement transitions in two-colour QCD

We study two-colour QCD with two flavours of Wilson fermion at non-zero chemical potential mu and zero temperature. We find evidence of two separate transitions: an onset transition at mu ~ m_pi/2 where quark number and energy densities increase from zero; and a deconfinement transition at higher mu...

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Bibliographic Details
Published in:arXiv.org 2005-11
Main Authors: Jon-Ivar Skullerud, Hands, Simon, Kim, Seyong
Format: Article
Language:English
Subjects:
Chemical potential
Color
Dependence
Fermi surfaces
Fermions
Flavor (particle physics)
Organic chemistry
Quarks
Online Access:Get full text
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Summary:We study two-colour QCD with two flavours of Wilson fermion at non-zero chemical potential mu and zero temperature. We find evidence of two separate transitions: an onset transition at mu ~ m_pi/2 where quark number and energy densities increase from zero; and a deconfinement transition at higher mu. The mu-dependence of the number and energy densities and the diquark condensate indicate that a Fermi surface is formed and that BCS rather than Bose-Einstein condensation dominates at the quark mass considered here, especially beyond the deconfinement transition.
ISSN:2331-8422