Main navigation | Main content

« fall 2017 - spring 2018 - summer 2018 »

This week | Next week | This semester | All future | Print view

This week | Next week | This semester | All future | Print view

Friday, July 21st 2017

2:00 pm:

One-dimensional topological superconductors and superfluids are typically classified and understood through Bogoliubovâ€“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.

The weekly calendar is also available via subscription to the physics-announce mailing list, and by RSS feed.