Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series TQM
Subjects cond-mat
Date Thursday 27 October 2022
Time 14:00
Institute LPTHE
Seminar Room INSP Jussieu towers 22-23 room 3-17
Speaker's Last Name Rançon
Speaker's First Name Adam
Speaker's Email Address
Speaker's Institution PhLAM Lille
Title Tan's contact of a planar Bose gas: theory vs experiment
Abstract In a dilute gas, Tan's contact relate the thermodynamics to the short distance properties of quantum many-body systems. Recently, the contact of a Bose gas confined in a plane has been measured in a broad temperature range, from the normal to the superfluid phase, and across the Berezinskii-Kosterlitz- Thouless transition. We show that the contact of this quasi-2D system can be obtained from the universal equation of state of a two-dimensional Bose gas. We compute the contact using the functional renormalisation group, and find a remarkable agreement with experiment.
arXiv Preprint Number

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