Speaker
Mr
Venkit Ayyar
(Duke University)
Description
We study two flavors of massless staggered fermions interacting via an on-site four-
fermion interaction and argue that the model contains an exotic quantum critical point
separating the perturbative massless phase from a massive fermion phase at strong cou-
plings where the fermion bilinear condensate remains zero. We believe that no spontaneous
symmetry breaking occurs at the transition. We have extensive calculations in three Eu-
clidian dimensions that are consistent with the existence of a single second order phase
transition separating the two phases. Although mean field theory suggests that this tran-
sition will turn first order at sufficiently large number of dimensions, preliminary results
suggest that the transition remains second order in four-dimensions.
Primary author
Mr
Venkit Ayyar
(Duke University)
