2007/03/31 by Pietro Giudice, Simon Hands
Physics and Astronomy · #Baryon #Gauge theory #Higgs boson #Lattice gauge theory #Mathematical physics #Particle physics #Physics #Physics of Superconductivity and Magnetism #Propagator #Quantum Chromodynamics and Particle Interactions #Quantum many-body systems #Quark #hep-lat
paper · pdf · doi:10.1016/j.nuclphysb.2007.07.025
published as Nucl.Phys.B789:111-132,2008 · 31 pages, 20 figures, enhanced discussion and analysis of finite volume effects, version accepted for publication by Nucl. Phys. B
arxiv created 2007/07/27 · openalex publication_date 2007/08/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study a quenched SU(2) lattice gauge theory in which, in an attempt to distinguish between timelike and spacelike gauge fields, the gauge ensemble Umu is generated from a 3 dimensional gauge-Higgs model, the timelike link variables being "reconstructed" from the Higgs fields. The resulting ensemble is used to study quenched quark propagation with non-zero chemical potential mu; in particular, the quark density, chiral and superfluid condensates, meson, baryon and gauge-fixed quark propagators are all studied as functions of mu. While it proves possible to alter the strength of the inter-quark interaction by changing the parameters of the dimensionally reduced model, there is no evidence for any region of parameter space where quarks exhibit deconfined behaviour or thermodynamic observables scale as if there were a Fermi surface.