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arXiv · 1807.03481

The spectrum of 2+1 dimensional Yang-Mills theory on a twisted spatial torus

Margarita García Pérez·Antonio González-Arroyo·Mateusz Koren·Masanori Okawa
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Abstract

We compute and analyse the low-lying spectrum of 2+1 dimensional $SU(N)$ Yang-Mills theory on a spatial torus of size $l\times l$ with twisted boundary conditions. This paper extends our previous work \cite{Perez:2013dra}. In that paper we studied the sector with non-vanishing electric flux and concluded that the energies only depend on the parameters through two combinations: $x=λN l /(4π)$ (with $λ$ the 't Hooft coupling) and the twist angle $\tilde θ$ defined in terms of the magnetic flux piercing the two-dimensional box. Here we made a more complete study and we are able to condense our results, obtained by non-perturbative lattice methods, into a simple expression which has important implications for the absence of tachyonic instabilities, volume independence and non-commutative field theory. Then we extend our study to the sector of vanishing electric flux. We conclude that the onset of the would-be large-volume glueball states occurs at an approximately fixed value of $x$, much before the stringy torelon states have become very massive.

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Margarita García Pérez, Antonio González-Arroyo, Mateusz Koren, Masanori Okawa. 2018-08-07. The spectrum of 2+1 dimensional Yang-Mills theory on a twisted spatial torus. https://doi.org/10.1007/jhep07(2018)169

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