24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

Search for a continuum limit of the PMS phase

26 Jul 2016, 17:50
20m
Building 67 Room 1003 (Highfield Campus, University of Southampton)

Building 67 Room 1003

Highfield Campus, University of Southampton

Talk Theoretical Developments Theoretical Developments

Speaker

Venkitesh Ayyar (Duke University)

Description

Previous studies of a simple four-fermion model with staggered fermions in 3d have shown the existence of an exotic quantum critical point, where one may be able to define a continuum limit of the Paramagnetic Strong Phase (or the PMS phase). We believe the existence of the critical point suggests a new mechanism for generating fermion masses. In this work we begin the search for this quantum critical point in 4d by extending the 3d model to 4d. Unlike in 3d, now we do find evidence for an intermediate spontaneously broken phase (FM phase) and are able compute the phase boundaries accurately. In terms of the bare coupling, the width of the intermediate region appears to be quite small.

Primary author

Venkitesh Ayyar (Duke University)

Co-author

Prof. Shailesh Chandrasekharan (Duke University)

Presentation Materials