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The complete trans-series for conserved charges in the Lieb-Liniger model

by Zoltán Bajnok, János Balog, Ramon Miravitllas, Dennis le Plat, István Vona

This is not the latest submitted version.

Submission summary

Authors (as registered SciPost users): János Balog · Dennis le Plat
Submission information
Preprint Link: https://arxiv.org/abs/2504.05932v2  (pdf)
Date submitted: April 30, 2025, 8:28 a.m.
Submitted by: Dennis le Plat
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
Specialties:
  • Condensed Matter Physics - Theory
  • High-Energy Physics - Theory
Approach: Theoretical

Abstract

We determine the complete trans-series solution for the (non-relativistic) moments of the rapidity density in the Lieb-Liniger model. The trans-series is written explicitly in terms of a perturbative basis, which can be obtained from the already known perturbative expansion of the density by solving several ordinary differential equations. Unknown integration constants are fixed from Volin's method. We have checked that our solution satisfies the analytical consistency requirements including the newly derived resurgence relations and agrees with the high precision numerical solution. Our results also provides the full analytic trans-series for the capacitance of the coaxial circular plate capacitor.

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
Current status:
Has been resubmitted

Reports on this Submission

Report #1 by Anonymous (Referee 1) on 2025-7-15 (Invited Report)

Strengths

1- Opens new direction in low-energy integrable models; 2- Provides a recipe how to construct the nonperturbative series expansion of the moments of the rapidity distribution in the Lieb-Liniger model.

Weaknesses

1- For some readers a weakness is that the solution is rather involved; however in my opinion this should not be understood in negative context but as an inconvenience.

Report

The authors study the structure and connections between the perturbative and nonperturbative parts of the series for the moments of the rapidity distribution in the Lieb-Liniger model at weak interactions. Using and extending some exact relations between the moments derived by Ristivojevic in Refs. [7] and [23], the authors extended the study to the nonperturbative part of the asymptotic series, which they eventually constructed. The agreement with very precise numerical algorithm to solve the original integral equation of Ref. [31] gives conclusive evidence that the goal of the paper is achieved, see Fig. 2 and Table 2. The manuscript is clearly written with great amount of details that interesting readers can follow. My opinion is that the present paper will become a cornerstone for future studies of nonperturbative effects in the Lieb-Liniger model.

Requested changes

1- Could the authors provide a physical understanding of exponentially suppressed terms in the ground-state energy, for example? It would be great if a parallel/comparison can be drawn with the findings of the paper of Marino https://doi.org/10.1088/1742-5468/ab4802 where the interpretation of the nonperturbative part is physical.

2- Typography: there is small inconsistency with dashes and hyphens: Lieb--Liniger vs Lieb-Liniger, Bose-Einstein, Coleman-Mermin-Wagner, etc. transseries vs trans-series.

Recommendation

Ask for minor revision

  • validity: high
  • significance: high
  • originality: high
  • clarity: high
  • formatting: perfect
  • grammar: perfect

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