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Confining strings in three-dimensional gauge theories beyond the Nambu-Gotō approximation

Articolo
Data di Pubblicazione:
2024
Abstract:
We carry out a systematic study of the effective bosonic string describing confining flux tubes in SU(N) Yang-Mills theories in three spacetime dimensions. While their low-energy properties are known to be universal and are described well by the Nambu-Gotō action, a non-trivial dependence on the gauge group is encoded in a series of undetermined subleading corrections in an expansion around the limit of an arbitrarily long string. We quantify the first two of these corrections by means of high-precision Monte Carlo simulations of Polyakov-loop correlators in the lattice regularization. We compare the results of novel lattice simulations for theories with N = 3 and 6 color charges, and report an improved estimate for the N = 2 case, discussing the approach to the large-N limit. Our results are compatible with analytical bounds derived from the S-matrix bootstrap approach. In addition, we also present a new test of the Svetitsky-Yaffe conjecture for the SU(3) theory in three dimensions, finding that the lattice results for the Polyakov-loop correlation function are in excellent agreement with the predictions of the Svetitsky-Yaffe mapping, which are worked out quantitatively applying conformal perturbation theory to the three-state Potts model in two dimensions. The implications of these results are discussed.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Bosonic Strings; Lattice Quantum Field Theory; Vacuum Structure and Confinement; Wilson; 't Hooft and Polyakov loops
Elenco autori:
Caselle, Michele; Magnoli, Nicodemo; Nada, Alessandro; Panero, Marco; Panfalone, Dario; Verzichelli, Lorenzo
Autori di Ateneo:
CASELLE Michele
NADA ALESSANDRO
PANERO Marco
Link alla scheda completa:
https://iris.unito.it/handle/2318/2010110
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/2010110/1368648/2407.10678_Caselle_et_al_Confining_strings_in_three-dimensional_gauge_theories_beyond_the_Nambu-Goto_approximation.pdf
Pubblicato in:
JOURNAL OF HIGH ENERGY PHYSICS
Journal
Progetto:
PRIN 2022 - COD. 2022ZTPK4E - "Conformal Perturbation Theory: from Effective String Theory applications to Statistical Mechanics realizations." - Finanziamento dell’Unione Europea – NextGenerationEU – missione 4, componente 2, investimento 1.1.
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URL

https://link.springer.com/article/10.1007/JHEP08(2024)198
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