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SUMMARY:Phase diagram of the O(3) model from dual lattice simulations
DTSTART;VALUE=DATE-TIME:20160727T111000Z
DTEND;VALUE=DATE-TIME:20160727T113000Z
DTSTAMP;VALUE=DATE-TIME:20210127T165223Z
UID:indico-contribution-2502@conference.ippp.dur.ac.uk
DESCRIPTION:Speakers: Falk Bruckmann (University of Regensburg)\nWe simula
ted the asymptotically free two-dimensional O(3) model at nonzero chemical
potential through dual variables free of the sign problem. The system und
ergoes a quantum phase transition when mu reaches the particle mass (gener
ated dynamically similar to QCD). The density follows a square root univer
sal for repulsive bosons in one spatial dimension. We have also measured t
he spin stiffness\, known to be sensitive to the spatial correlation lengt
h\, in different scaling trajectories to zero temperature and infinite siz
e. It points to a dynamical critical exponent z=2\, which can be explained
by particle worldlines. Comparisons to thermodynamic Bethe ansaetze are s
hown as well.\n\nhttps://conference.ippp.dur.ac.uk/event/470/contributions
/2502/
LOCATION:Highfield Campus\, University of Southampton Building 32 Room 101
5
URL:https://conference.ippp.dur.ac.uk/event/470/contributions/2502/
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