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arXiv · 1811.06905

Effective mesonic theory for the 't Hooft model on the lattice

Sergio Caracciolo·Mauro Pastore
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Abstract

We apply to a lattice version of the 't~Hooft model, QCD in two space-time dimensions for large number of colours, a method recently proposed to obtain an effective mesonic action starting from the fundamental, fermionic one. The idea is to pass from a canonical, operatorial representation, where the low-energy states have a direct physical interpretation in terms of a Bogoliubov vacuum and its corresponding quasiparticle excitations, to a functional, path integral representation, via the formalism of the transfer matrix. In this way we obtain a lattice effective theory for mesons in a self-consistent setting. We also verify that well-known results from other different approaches are reproduced in the continuum limit.

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Sergio Caracciolo, Mauro Pastore. 2018-11-16. Effective mesonic theory for the 't Hooft model on the lattice. https://doi.org/10.1016/j.aop.2019.02.007

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