Details

Autor(en) / Beteiligte

• Bazavov, Alexei
• Berg, Bernd A.

Titel

Program package for multicanonical simulations of U(1) lattice gauge theory

Ist Teil von

• Computer physics communications, 2009-11, Vol.180 (11), p.2339-2347

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2009

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• We document our Fortran 77 code for multicanonical simulations of 4D U(1) lattice gauge theory in the neighborhood of its phase transition. This includes programs and routines for canonical simulations using biased Metropolis heatbath updating and overrelaxation, determination of multicanonical weights via a Wang–Landau recursion, and multicanonical simulations with fixed weights supplemented by overrelaxation sweeps. Measurements are performed for the action, Polyakov loops and some of their structure factors. Many features of the code transcend the particular application and are expected to be useful for other lattice gauge theory models as well as for systems in statistical physics. Program title: STMC_U1MUCA Catalogue identifier: AEET_v1_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEET_v1_0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 18 376 No. of bytes in distributed program, including test data, etc.: 205 183 Distribution format: tar.gz Programming language: Fortran 77 Computer: Any capable of compiling and executing Fortran code Operating system: Any capable of compiling and executing Fortran code Classification: 11.5 Nature of problem: Efficient Markov chain Monte Carlo simulation of U(1) lattice gauge theory close to its phase transition. Measurements and analysis of the action per plaquette, the specific heat, Polyakov loops and their structure factors. Solution method: Multicanonical simulations with an initial Wang–Landau recursion to determine suitable weight factors. Reweighting to physical values using logarithmic coding and calculating jackknife error bars. Running time: The prepared tests runs took up to 74 minutes to execute on a 2 GHz PC.