Glueballs and the superfluid phase of Two-Color QCD

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dc.creatorLombardo, Maria Paola
dc.creatorPaciello, Maria Luigia
dc.creatorPetrarca, Silvano
dc.creatorTaglienti, Bruno
dc.date2008-04-30
dc.date2008-08-22
dc.date.accessioned2026-07-07T12:14:28Z
dc.date.available2026-07-07T12:14:28Z
dc.descriptionWe present the first results on scalar glueballs in cold, dense matter using lattice simulations of two color QCD. The simulations are carried out on a $6^3 \times 12$ lattice and use a standard hybrid molecular dynamics algorithm for staggered fermions for two values of quark mass. The glueball correlators are evaluated via a multi-step smearing procedure. The amplitude of the glueball correlator peaks in correspondence with the zero temperature chiral transition, $μ_c = m_π/2$, and the propagators change in a significant way in the superfluid phase, while the Polyakov loop is mearly insensitive to the transition. Standard analysis suggest that lowest mass in the $0^{++}$ gluonic channel decreases in the superfluid phase, but these observations need to be confirmed on larger and more elongated lattices These results indicate that a nonzero density induces nontrivial modifications of the gluonic medium.
dc.description26 pages, 13 figures; discussions and one figure added; to appear in EPJC
dc.identifierhttps://arxiv.org/abs/0804.4863
dc.identifierhttp://arxiv.org/abs/0804.4863
dc.identifierEur.Phys.J.C58:69-81,2008
dc.identifierdoi:10.1140/epjc/s10052-008-0718-z
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211205
dc.subjectHigh Energy Physics - Lattice
dc.titleGlueballs and the superfluid phase of Two-Color QCD
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