A Topology-Changing Phase Transition and the Dynamics of Flavour

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dc.creatorAlbash, Tameem
dc.creatorFilev, Veselin
dc.creatorJohnson, Clifford V.
dc.creatorKundu, Arnab
dc.date2006-05-08
dc.date2007-08-05
dc.date.accessioned2026-07-07T11:27:28Z
dc.date.available2026-07-07T11:27:28Z
dc.descriptionIn studying the dynamics of large N_c, SU(N_c) gauge theory at finite temperature with fundamental quark flavours in the quenched approximation, we observe a first order phase transition. A quark condensate forms at finite quark mass, and the value of the condensate varies smoothly with the quark mass for generic regions in parameter space. At a particular value of the quark mass, there is a finite discontinuity in the condensate's vacuum expectation value, corresponding to a first order phase transition. We study the gauge theory via its string dual formulation using the AdS/CFT conjecture, the string dual being the near-horizon geometry of N_c D3-branes at finite temperature, AdS_5--Schwarzschild X S^5, probed by a D7-brane. The D7-brane has topology R^4 X S^3 X S^1 and allowed solutions correspond to either the S^3 or the S^1 shrinking away in the interior of the geometry. The phase transition represents a jump between branches of solutions having these two distinct D-brane topologies. The transition also appears in the meson spectrum.
dc.description13 pages, three multi-component eps figures, LaTeX (V2: refs added, figs improved. V3: refs added, discussion of meson spectrum improved)
dc.identifierhttps://arxiv.org/abs/hep-th/0605088
dc.identifierhttp://arxiv.org/abs/hep-th/0605088
dc.identifierPhys.Rev.D77:066004,2008
dc.identifierdoi:10.1103/PhysRevD.77.066004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196157
dc.subjectHigh Energy Physics - Theory
dc.titleA Topology-Changing Phase Transition and the Dynamics of Flavour
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