On the effective string spectrum of the tridimensional Z(2) gauge model

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dc.creatorCaselle, Michele
dc.creatorHasenbusch, Martin
dc.creatorPanero, Marco
dc.date2005-10-26
dc.date.accessioned2026-07-07T12:38:28Z
dc.date.available2026-07-07T12:38:28Z
dc.descriptionWe study the Z(2) lattice gauge theory in three dimensions, and present high precision estimates for the first few energy levels of the string spectrum. These results are obtained from new numerical data for the two-point Polyakov loop correlation function, which is measured in the 3d Ising spin system using duality. This allows us to perform a stringent comparison with the predictions of effective string models. We find a remarkable agreement between the numerical estimates and the Nambu-Goto predictions for the energy gaps at intermediate and large distances. The precision of our data allows to distinguish clearly between the predictions of the full Nambu-Goto action and the simple free string model up to an interquark distance $r \approx 10/\sqrtσ$. At the same time, our results also confirm the breakdown of the effective picture at short distances, supporting the hypothesis that terms which are not taken into account in the usual Nambu-Goto string formulation yield a non-trivial shift to the energy levels. Furthermore, we discuss the theoretical implications of these results.
dc.description31 pages, 14 figures
dc.identifierhttps://arxiv.org/abs/hep-lat/0510107
dc.identifierhttp://arxiv.org/abs/hep-lat/0510107
dc.identifierJHEP 0601 (2006) 076
dc.identifierdoi:10.1088/1126-6708/2006/01/076
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/218769
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleOn the effective string spectrum of the tridimensional Z(2) gauge model
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