Theory Group Lunchtime Seminars
Scheduled seminars are listed below.
Announcements and reminders will be posted to the physics-theory-group-seminar list.
To join this list:
- Sign into your university email account via webmail.
- Click the settings icon along the top icon bar (looks like a cog/gear).
- In the "Search Outlook settings" box type "distribution groups" and click the top search result.
- Under "Distribution groups I belong to" click the icon with two little people and a "+" sign.
- Search for physics-theory-group-seminar and double click on the result.
- Click "join". You will then be added to the email list once approved by a moderator.
To leave this list:
- Sign into your university email account via webmail.
- Click the settings icon along the top icon bar (looks like a cog/gear).
- In the "Search Outlook settings" box type "distribution groups" and click the top search result.
- Under "Distribution groups I belong to" click
physics-theory-group-seminar. - Click the "leave" icon above the list (looks like two people with a minus sign to their bottom right).
[If you are a member of Theory group, you will receive seminar announcements via physics-theory or physics-theory-staff. You do NOT need to subscribe to the above mailing list as well.]
Theory Seminar: Yichen Hu (Oxford), On the Brink of Fractionalization
Systems of strongly interacting particles can give rise to topological phases beyond non-interacting limit. Although unique features of strongly interacting topological phases, such as fractionalization of quantum degrees of freedom, have important applications in quantum information processing, these topological phases are still far from experimental realizations. In this talk, by presenting constructions of two strongly interacting topological phases, I will argue the key mechanism of their realizations is to add interactions near topological phase transitions. I will first introduce a model of interacting Majorana fermions that describes a superconducting phase with Fibonacci topological order. Then I will show that a correlated fluid of electrons and holes, dubbed fractional excitonic insulator phase, can exhibit a fractional quantum Hall effect at zero magnetic field. I will present physical evidence and conjecture that this phase can be realized in a higher angular momentum excitonic paired system in the presence of interactions.