[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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