Majorana fermions, neutral fermions that are their own antiparticles, have been of great interest recently in condensed matter physics. While the physics of weakly interacting Majorana fermions is readily described, the effect of strong interactions requires the development of additional nonperturbative tools. A particularly useful tool in other contexts has been duality, which relates weak and strong coupling behaviors of two theories. For Dirac fermions, a dual description can be constructed using a flux attachment procedure. This procedure however, cannot obviously be generalized to the case of neutral Majorana fermions, which call for a different approach. In this talk, I will discuss an alternate construction of a dual bosonic description of Majorana fermions in (2+1)d, and point out how some strong coupling phases can be described in terms of the new variables.
Ashvin Vishwanath (Harvard University, USA)
Date & Time
15 March 2017, 11:00 to 12:00
Emmy Noether Seminar Room, ICTS Campus, Bangalore