University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Friday, July 21st 2017
2:00 pm:
Thesis Defense in PAN 110
Speaker: Chun Chen, University of Minnesota
Subject: A New Type of Many-Body Majorana Zero Modes in Fermionic Flux Ladder Model
This is the public portion of Mr. Chen's thesis defense. His advisor is Fiona Burnell.

One-dimensional topological superconductors and superfluids are typically classified and understood through Bogoliubov–de Gennes mean-field Hamiltonians. This raises the question of whether they can exist in truly one-dimensional systems where particle number is conserved. We discuss a new mechanism by which Majorana zero modes can arise in a number-conserving Fermi ladder. This interaction-enabled topological phase is protected by a unitary symmetry that is not related to any microscopic fermion-parity symmetry.

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