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BEGIN:VEVENT
UID:DSC-23034
DTSTART;TZID=Europe/Berlin:20260730T110000
SEQUENCE:1785044354
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20260730T120000
URL:https://dresden-science-calendar.org/calendar/de/detail/23034
LOCATION:IFW\, Helmholtzstraße 2001069 Dresden
SUMMARY:Schindler: The sign problem\, computational complexity\, and exotic
  phases in non-Hermitian systems
CLASS:PUBLIC
DESCRIPTION:Speaker: Dr. Stella Schindler\nInstitute of Speaker: LANL - Los
  Alamos National Laboratory\nTopics:\n\n Location:\n  Name: IFW (D2E.27\, 
 IFW Dresden)\n  Street: Helmholtzstraße 20\n  City: 01069 Dresden\n  Phon
 e: \n  Fax: \nDescription: Non-Hermiticity arises widely in condensed matt
 er\, optics\, and high energy physics\, including systems with gain and lo
 ss\, finite density\, and asymmetric dynamics. Analytic study of these sys
 tems is complicated by the relaxation of traditional assumptions for Hermi
 tian systems.  Numerical analysis is complicated by a sign problem\, a gen
 erally NP-hard barrier to Monte Carlo sampling. Fortunately\, the subset o
 f non-Hermitian systems with so-called PT-type symmetries is more tractabl
 e. We show how to overcome sign problems in large classes of PT-symmetric 
 field theories\, providing new insights into the nature and origins of com
 putational complexity. We also show that these systems generally support m
 oat phase behavior. .
DTSTAMP:20260727T072931Z
CREATED:20260714T053814Z
LAST-MODIFIED:20260726T053914Z
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