The 34th International Symposium on Lattice Field Theory (Lattice 2016)

Functional Fit Approach (FFA) for Density of States method: SU(3) spin system and SU(3) gauge theory with static quarks

26 Jul 2016, 15:00

20m

Building 32 Room 1015 (Highfield Campus, University of Southampton)

Talk Nonzero Temperature and Density Nonzero Temperature and Density

Speaker

Mr Mario Giuliani (University of Graz)

Description

We study new developments for the Density of States (DoS) method to simulate systems affected by the complex action problem. In particular we use the functional fit approach (FFA). It consists of a restricted Monte Carlo simulation with an additional Boltzmann factor, which allows one to explore the DoS for a given part of the spectrum. We fit the simulation data with a known function to obtain the parameters of the DoS. We apply the approach to two model systems: 1) The SU(3) spin system with a chemical potential; 2) The SU3 gauge theory with static quarks. We discuss the technical challenges and the potential of FFA DoS.

Presentation materials

Slides

Presentazione_Southampton.pdf