Improved convergence of Complex Langevin simulations

Felipe Attanasio, Benjamin Jäger

Research output: Contribution to journalConference articleResearchpeer-review

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Abstract

The sign problem appears in lattice QCD as soon as a non-zero chemical potential is introduced. This prevents direct simulations to determine the phase structure of the strongly interacting matter. Complex Langevin methods have been successfully used for various models or approximations of QCD. However, in some scenarios it converges to incorrect results. We present developments of our new method that helps to improve the convergence by keeping the system closer to the SU(3) manifold and discuss preliminary tests and results.
Original languageEnglish
Article number07039
JournalE P J Web of Conferences
Volume175
Number of pages7
ISSN2100-014X
DOIs
Publication statusPublished - 26. Mar 2018
Event35th International Symposium on Lattice Field Theory - Granada, Spain
Duration: 18. Jun 201724. Jun 2017
Conference number: 35

Conference

Conference35th International Symposium on Lattice Field Theory
Number35
CountrySpain
CityGranada
Period18/06/201724/06/2017

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quantum chromodynamics
simulation
approximation

Cite this

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title = "Improved convergence of Complex Langevin simulations",
abstract = "The sign problem appears in lattice QCD as soon as a non-zero chemical potential is introduced. This prevents direct simulations to determine the phase structure of the strongly interacting matter. Complex Langevin methods have been successfully used for various models or approximations of QCD. However, in some scenarios it converges to incorrect results. We present developments of our new method that helps to improve the convergence by keeping the system closer to the SU(3) manifold and discuss preliminary tests and results.",
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Improved convergence of Complex Langevin simulations. / Attanasio, Felipe; Jäger, Benjamin.

In: E P J Web of Conferences, Vol. 175, 07039, 26.03.2018.

Research output: Contribution to journalConference articleResearchpeer-review

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AB - The sign problem appears in lattice QCD as soon as a non-zero chemical potential is introduced. This prevents direct simulations to determine the phase structure of the strongly interacting matter. Complex Langevin methods have been successfully used for various models or approximations of QCD. However, in some scenarios it converges to incorrect results. We present developments of our new method that helps to improve the convergence by keeping the system closer to the SU(3) manifold and discuss preliminary tests and results.

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