[Theory-seminars] Theory Seminar, Monday Sep 18, 1:00pm, Room L102 - Thomas Cohen

[Alessandro Pilloni]

Theory Seminar
Monday, September 18
1:00pm
CEBAF Center, Room L102

Thomas Cohen (Maryland U.)
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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