Controlling complex Langevin dynamics at finite density
نویسندگان
چکیده
منابع مشابه
Complex Langevin dynamics at finite chemical potential: mean field analysis in the relativistic Bose gas
Stochastic quantization can potentially be used to simulate theories with a complex action due to a nonzero chemical potential. We study complex Langevin dynamics in the relativistic Bose gas analytically, using a mean field approximation. We concentrate on the region with a Silver Blaze problem and discuss convergence, stability and fixed points. The real distribution satisfying the extended F...
متن کاملSurprises in Nonperturbative Dynamics in Σ-model at Finite Density
The linear SU(2)L ×SU(2)R σ-model occupies a unique place in elementary particle physics and quantum field theory. It has been recently realized that when a chemical potential for hypercharge is added, it becomes a toy model for the description of the dynamics of the kaon condensate in high density QCD. We review recent results in nonperturbative dynamics obtained in the ungauged and gauged ver...
متن کاملUnifying Nucleon and Quark Dynamics at Finite Baryon Number Density
We present a model of baryonic matter which contains free constituent quarks in addition to bound constituent quarks in nucleons. In addition to the common linear σ-model we include the exchange of vector-mesons. The percentage of free quarks increases with baryon density but the nucleons resist a restoration of chiral symmetry.
متن کاملQcd at Finite Density
At sufficiently high temperature and density, quantum chromodynamics (QCD) predicts phase transition from the hadronic phase to the quark-gluon plasma phase. Lattice QCD is the most useful tool to investigate this critical phenomenon, which status is briefly reviewed. The usual problem in the Lagrangian formulation at finite density is either an incorrect continuum limit or its complex action a...
متن کاملComplex Langevin dynamics for dynamical QCD at nonzero chemical potential: A comparison with multiparameter reweighting
Z. Fodor, S. D. Katz, D. Sexty, and C. Török Department of Physics, Wuppertal University, Gaussstrasse 20, D-42119 Wuppertal, Germany Jülich Supercomputing Centre, Forschungszentrum Jülich, D-52425 Jülich, Germany Institute for Theoretical Physics, Eötvös University, Pázmány P. sétány 1/A, H-1117 Budapest, Hungary MTA-ELTE “Lendület” Lattice Gauge Theory Research Group, Pázmány P. sétány 1/A, H...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The European Physical Journal A
سال: 2013
ISSN: 1434-6001,1434-601X
DOI: 10.1140/epja/i2013-13089-4