[Jlab-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Monday, Sept. 18, 2017
1:00 p.m. (coffee at 12:45 p.m.)
CEBAF Center, Room L102

Thomas Cohen *
*University of Maryland
*
**The Sign Problem and the Theta Term

*This talk explores the sign problem in lattice calculations. For 
concreteness, the talk focuses
on the energy density as a function of theta for gauge theories when a 
topological CP violating
term is included. The emphasis is on subtleties associated with the the 
infinite volume limit.
A key question addressed is the extent to which information about the 
infinite volume limit of
the energy density as a function of topological charge density is 
sufficient to fully reconstruct
the infinite volume energy density as a function of theta. Implications 
for more general problems
in QCD where sign problems arise  will be discussed.
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