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Coupled minimal models revisited II: Constraints from permutation symmetry

by António Antunes, Connor Behan

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Submission summary

Authors (as registered SciPost users): Antonio Antunes
Submission information
Preprint Link: https://arxiv.org/abs/2412.21107v4  (pdf)
Date accepted: April 8, 2025
Date submitted: April 2, 2025, 7:50 p.m.
Submitted by: Antunes, Antonio
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
Specialties:
  • High-Energy Physics - Theory
Approach: Theoretical

Abstract

Coupling $N$ large $m$ minimal models and flowing to IR fixed points is a systematic way to build new classes of compact unitary 2d CFTs which are likely to be irrational, and potentially have a positive Virasoro twist gap above the vaccuum. In this paper, we build on the construction of [1], establishing that, for spins less than 10, additional currents transforming in non-trivial irreducible representations of the permutation symmetry $S_N$ are not conserved at the IR fixed points. Along the way, we develop a finer understanding of the spectrum of these theories, of the special properties of the $N=4$ case and of non-invertible symmetries that constrain them. We also discuss variations of the original setup of [1] some of which can exist for smaller values of the UV central charge.

Author indications on fulfilling journal expectations

  • Provide a novel and synergetic link between different research areas.
  • Open a new pathway in an existing or a new research direction, with clear potential for multi-pronged follow-up work
  • Detail a groundbreaking theoretical/experimental/computational discovery
  • Present a breakthrough on a previously-identified and long-standing research stumbling block

Author comments upon resubmission

Please see our responses to the referees.

List of changes

Please see our responses to the referees.

Published as SciPost Phys. 18, 132 (2025)


Reports on this Submission

Report #1 by Sylvain Ribault (Referee 1) on 2025-4-3 (Invited Report)

Report

The authors have made significant improvements, both in substance and in clarity. These include the introduction of refined partition functions, which could be of independent interest. I have no further suggestions.

As a matter of principle I do not make recommendations on whether to publish articles or not. Editorial decisions belong to editors. Since the computer system makes it necessary to have a recommendation, I picked the first one in the list.

Recommendation

Publish (surpasses expectations and criteria for this Journal; among top 10%)

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