TH Informal Lattice Meeting

The equation of state with non-equilibrium methods

by Mr Alessandro Nada (University of Turin & INFN, Turin)

53/R-044 (CERN)



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Jarzynski's equality is a well-known result in non-equilibrium statistical mechanics which provides an elegant and powerful tool to compute directly differences in free-energy in Monte Carlo simulations and it can be readily extended to lattice gauge theories for a large set of physically interesting observables. In this talk a novel technique to determine the thermodynamics of strongly-interacting matter based on this relation is discussed. It allows for a direct and efficient determination of the pressure using out-of-equilibrium Monte Carlo simulations on the lattice. Results for the equation of state of the SU(3) Yang-Mills theory obtained with this technique in the confined and deconfined phases will be presented.