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Neutron matter on the lattice with pionless effective field theory
Dean Lee, Thomas Schaefer
We study neutron matter by combining pionless effective field theory with non-perturbative lattice methods. The neutron contact interaction is determined by zero temperature scatte…
Instantons and Monte Carlo Methods in Quantum Mechanics
Thomas Schaefer
In these lectures we describe the use of Monte Carlo simulations in understanding the role of tunneling events, instantons, in a quantum mechanical toy model. We study, in particul…
Inequalities for Light Nuclei in the Wigner Symmetry Limit
Jiunn-Wei Chen, Dean Lee, Thomas Schaefer
Using effective field theory we derive inequalities for light nuclei in the Wigner symmetry limit. This is the limit where isospin and spin degrees of freedom can be interchanged.…
An Effective Theory for Baryons in the CFL Phase
Andrei Kryjevski, Thomas Schaefer
We study the effective field theory for fermions in the color-flavor locked (CFL) phase of high density QCD. The effective theory contains a flavor nonet of baryons interacting wit…
Non-Fermi Liquid Effects in QCD at High Density
Thomas Schaefer, Kai Schwenzer
We study non-Fermi liquid effects due to the exchange of unscreened magnetic gluons in high density QCD by using an effective field theory. A one-loop calculation gives the well kn…
Instantons and the Spin of the Nucleon
T. Schaefer, V. Zetocha
Motivated by measurements of the flavor singlet axial coupling constant of the nucleon in polarized deep inelastic scattering we study the contribution of instantons to OZI violati…