Numerical tests of the large charge expansion

A bstract We perform Monte-Carlo measurements of two and three-point functions of charged operators in the critical O (2) model in 3 dimensions. Our results are compatible with the predictions of the large charge superfluid effective field theory. To obtain reliable measurements for large values of...

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Veröffentlicht in:	The journal of high energy physics 2024-05, Vol.2024 (5), p.161-27, Article 161
Hauptverfasser:	Cuomo, Gabriel, Lopes, J.M.Viana Parente, Matos, José, Oliveira, Júlio, Penedones, João
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Classical and Quantum Gravitation Conformal and W Symmetry Correlation Functions Dimensional analysis Elementary Particles Field Theories in Higher Dimensions Field theory Fluids Lattice Quantum Field Theory Operators (mathematics) Phase transitions Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Quantum Physics Regular Article - Theoretical Physics Relativity Theory Size effects String Theory Superfluidity Validity
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Beschreibung
Zusammenfassung:	A bstract We perform Monte-Carlo measurements of two and three-point functions of charged operators in the critical O (2) model in 3 dimensions. Our results are compatible with the predictions of the large charge superfluid effective field theory. To obtain reliable measurements for large values of the charge, we improved the Worm algorithm and devised a measurement scheme which mitigates the uncertainties due to lattice and finite size effects.
ISSN:	1029-8479 1029-8479
DOI:	10.1007/JHEP05(2024)161