A statistical model for errors from chiral effective field theory

Dick Furnstahl, Ohio State University
Monday, May 22, 3:00 PM - Theory Seminar
NSCL Lecture Hall 1200

Abstract:  Chiral effective field theory (EFT) has become the standard method to generate microscopic nuclear Hamiltonians for few- and many-body calculations. These Hamiltonians are in the form of an expansion that is truncated at some order, inducing an error that must be quantified for robust statistical comparisons to experiment. I will present a Bayesian model for these truncation errors with nucleon-nucleon scattering as a test application. The Bayesian approach allows for statistical validations of the assumptions and enables statistical estimates of the EFT breakdown scale from the convergence pattern.