24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

Density of States

29 Jul 2016, 10:15
30m
Building 32 (EEE) Room 1015 and Building 67 (Nightingale) Room 1027 via video link (University of Southampton, Highfield Campus)

Building 32 (EEE) Room 1015 and Building 67 (Nightingale) Room 1027 via video link

University of Southampton, Highfield Campus

Talk Plenary Session Plenary Session

Speaker

Prof. Kurt Langfeld (Plymouth University)

Description

Although Monte Carlo calculations using Importance Sampling have matured into the most widely employed method for determining first principle results in QCD, they spectacularly fail for theories with a sign problem or for which certain rare configurations play an important role. Non-Markovian Random walks, based upon iterative refinements of the density-of-states, overcome such overlap problems. In my talk, I will review the Linear Logarithmic Relaxation (LLR) method and, in particular, focus onto ergodicity and exponential error suppression. Applications include the high-state Potts model, U(1), SU(2) and SU(3) Yang-Mills theories as well as quantum field theories with a sign problem: the Z3 spin model and QCD at finite densities of heavy quarks.

Primary author

Prof. Kurt Langfeld (Plymouth University)

Presentation Materials