Finite-volume effects in the δ-regime

Abstract We derive a systematic perturbative expansion for the finite-volume energy spectrum of the non-linear O(N) σ-model in the δ-regime. The violation of the power-counting rules that emerges after the separation of the fast and slow modes is dealt with to all orders by use of the threshold expa...

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Bibliographic Details
Main Authors: Ulf-G. Meißner, Fabian Müller, Akaki Rusetsky
Format: Article
Language:English
Published: SpringerOpen 2025-02-01
Series:Journal of High Energy Physics
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Online Access:https://doi.org/10.1007/JHEP02(2025)092
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