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Author Aarts, Gert ♦ Stamatescu, Ion-Olimpiu
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2008-07-10
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword High Energy Physics - Lattice ♦ Condensed Matter - Other Condensed Matter ♦ High Energy Physics - Phenomenology ♦ Nuclear Theory ♦ physics:cond-mat ♦ physics:hep-lat ♦ physics:hep-ph ♦ physics:nucl-th
Abstract A nonperturbative lattice study of QCD at finite chemical potential is complicated due to the complex fermion determinant and the sign problem. Here we apply the method of stochastic quantization and complex Langevin dynamics to this problem. We present results for U(1) and SU(3) one link models and QCD at finite chemical potential using the hopping expansion. The phase of the determinant is studied in detail. Even in the region where the sign problem is severe, we find excellent agreement between the Langevin results and exact expressions, if available. We give a partial understanding of this in terms of classical flow diagrams and eigenvalues of the Fokker-Planck equation.
Description Reference: JHEP 0809:018,2008
Educational Use Research
Learning Resource Type Article
Page Count 37


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