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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): António 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: António Antunes
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.
Current status:
Published

Editorial decision: For Journal SciPost Physics: Publish
(status: Editorial decision fixed and (if required) accepted by authors)


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%)

  • validity: -
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  • originality: -
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