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SUMMARY:Gauge cooling for the singular-drift problem in the complex Lange
vin method - an application to finite density QCD
DTSTART;VALUE=DATE-TIME:20160726T165000Z
DTEND;VALUE=DATE-TIME:20160726T171000Z
DTSTAMP;VALUE=DATE-TIME:20200603T233844Z
UID:indico-contribution-2693@conference.ippp.dur.ac.uk
DESCRIPTION:Speakers: Keitaro Nagata (KEK)\nThe complex Langevin method is
a promising approach \nto complex action systems\, which suffer from the
sign problem.\nIn particular\, the use of gauge cooling enabled the studie
s of finite \ndensity QCD either in the deconfined phase or in the heavy d
ense limit. \nIn the confined phase with light quarks\, however\, the meth
od does not\nwork as it is due to the singularities in the fermion drift t
erm\ncaused by small eigenvalues of the Dirac operator with the quark mass
.\nIn a previous paper\, we proposed that this singular-drift problem \nca
n be overcome by the gauge cooling with different criteria for choosing \n
the complexified gauge transformation\, and showed that\nthe method works
in chiral Random Matrix Theory even at small quark mass. \nHere\, we apply
the same idea to QCD at finite density with light quarks \nand present so
me preliminary results.\n\nhttps://conference.ippp.dur.ac.uk/event/470/con
tributions/2693/
LOCATION:Highfield Campus\, University of Southampton Building 32 Room 101
5
URL:https://conference.ippp.dur.ac.uk/event/470/contributions/2693/
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