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Applications of Jarzynski's relation in lattice gauge theories

A. Nada, M. Caselle, G. Costagliola, M. Panero, A. Toniato

in 34th annual International Symposium on Lattice Field Theory

Contribution: pdf


Jarzynski's equality is a well-known result in statistical mechanics, relating free-energy differences between equilibrium ensembles with fluctuations in the work performed during non-equilibrium transformations from one ensemble to the other. In this work, an extension of this relation to lattice gauge theory will be presented, along with numerical results for the $\mathbb{Z}_2$ gauge model in three dimensions and for the equation of state in $\mathrm{SU}(2)$ Yang-Mills theory in four dimensions. Then, further applications will be discussed, in particular for the Schrodinger functional and for the study of QCD in strong magnetic fields.