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“Emergent supersymmetry in condensed matter models
of interacting Majorana
fermions"
|
Date: |
Download-files: |
Time: |
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Thursday, 23 April 2020 |
Video-Recording for any system with MP4-support
- Video.mp4 (ca.339 Mb) |
17:15 – 18:15 |
Ian Affleck
(University of British Columbia)
Abstract:
It has been proposed that a superconductor
in a magnetic
field,
in proximity to a topological insulator, has a Majorana
fermion at the core
of every vortex. I will discuss the phase diagram of this system with
interactions
between
the Majorana fermions included. In the (1+1) dimensional case
the phase
diagram
has been well confirmed by a combination of analytical and numerical
methods. It includes 3 non-trivial phases with
emergent Lorentz invariance and
a critical point with Lorentz invariant supersymmetry.
I will then discuss our conjecture on the
2 dimensional square vortex
lattice case,
which
also includes emergent Lorentz invariance and supersymmetry
Bio: Ian Affleck is fellow of the British
Royal Society, a foreign associate of the
French Academy of Sciences and a winner of
the American Physical Society
Onsager Prize.
He began his career in high energy theory, including cosmology,
but switched into condensed
matter theory many years ago. He often applies
techniques
from high energy theory to condensed
matter physics.