2013/07/19 by Margarita García Pérez, Margarita Garcı́a Pérez, Antonio González-Arroyo +5 · 6 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #Gauge theory #Geometry #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Theory (hep-th) #Lambda #Lattice (music) #Mathematical physics #Mathematics #Monte Carlo method #Perturbation theory (quantum mechanics) #Physics #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #Quantum Monte Carlo #Quantum mechanics #Scaling #String theory #Torus #Yang–Mills theory #hep-lat #hep-th
paper · pdf · doi:10.48550/arxiv.1307.5254
published in arXiv (Cornell University) (Cornell University) · 62 pages, 7 figures
arxiv created 2013/07/19 · openalex publication_date 2013/07/19 · arxiv updated 2013/07/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We study the 2+1 dimensional SU(N) Yang-Mills theory on a finite two-torus with twisted boundary conditions. Our goal is to study the interplay between the rank of the group N, the length of the torus L and the ZN magnetic flux. After presenting the classical and quantum formalism, we analyze the spectrum of the theory using perturbation theory to one-loop and using Monte Carlo techniques on the lattice. In perturbation theory, results to all orders depend on the combination x=λNL and an angle defined in terms of the magnetic flux (λ is 't Hooft coupling). Thus, fixing the angle, the system exhibits a form of volume independence (NL dependence). The numerical results interpolate between our perturbative calculations and the confinement regime. They are consistent with x-scaling and provide interesting information about the k-string spectrum and effective string theories. The occurrence of tachyonic instabilities is also analysed. They seem to be avoidable in the large N limit with a suitable scaling of the magnetic flux.