Meson masses and decay constants at large $N$

TL;DR

This paper calculates meson masses and decay constants in the large N limit of SU(N) gauge theory using a reduced model and a novel smearing method, providing reliable results through variational analysis.

Contribution

It introduces a new smearing technique on the one-point lattice and applies it to determine meson properties in the large N limit with improved reliability.

Findings

Reliable meson mass and decay constant values obtained

Effective use of the twisted Eguchi-Kawai reduced model

Validation of the smearing method on the one-point lattice

Abstract

Meson masses and decay constants in the large $N$ limit of SU($N$) gauge theory are determined using the twisted Eguchi-Kawai reduced model. To this end, we make use of a recently defined smearing method valid on the one-point lattice. This procedure, in combination with a variational analysis, allows to obtain reliable values for these quantities.