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SUMMARY:Complex Langevin dynamics and large-N gauge theories (Quantum Spac
etime Seminar series)
DTSTART;VALUE=DATE-TIME:20180205T060000Z
DTEND;VALUE=DATE-TIME:20180205T070000Z
DTSTAMP;VALUE=DATE-TIME:20180818T201201Z
UID:indico-event-6214@cern.ch
DESCRIPTION:Using complex Langevin dynamics and stochastic quantization we
examine the phase structure of a large N unitary matrix model at low temp
erature with finite quark chemical potential. This model is obtained as th
e low temperature effective theory of QCD with N number of colors and Nf n
umber of quark flavors. We simulate several observables of the model\, inc
luding Polyakov lines and quark number density\, for large N and N f . The
action is manifestly complex and thus the dominant contributions to the p
ath integral come from the space of complexified gauge field configuration
s. For this reason\, the Polyakov line eigenvalues lie off the unit circle
and out in the complex plane. A distinct feature of this model\, the occu
rrence of a series of Gross-Witten-Wadia transitions\, as a function of th
e quark chemical potential\, is reproduced using complex Langevin simulati
ons.\n\nhttps://indico.tifr.res.in/indico/conferenceDisplay.py?confId=6214
LOCATION: A304
URL:https://indico.tifr.res.in/indico/conferenceDisplay.py?confId=6214
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