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DTSTART:19960101T000000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260623T020744Z DTSTART;VALUE=DATE-TIME:20191017T130000 DTEND;VALUE=DATE-TIME:20191017T140000 SUMMARY:Theory Seminar: Yichen Hu (Oxford)\, On the Brink of Fractionaliz ation TZID:Europe/London UID:20191017-8a17841a6da67569016dc941aebb69dd@warwick.ac.uk CREATED:20191014T075308Z DESCRIPTION:Systems of strongly interacting particles can give rise to to pological phases beyond non-interacting limit. Although unique features of strongly interacting topological phases\, such as fractionalization o f quantum degrees of freedom\, have important applications in quantum in formation processing\, these topological phases are still far from exper imental 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 tra nsitions. I will first introduce a model of interacting Majorana fermion s that describes a superconducting phase with Fibonacci topological orde r. Then I will show that a correlated fluid of electrons and holes\, dub bed fractional excitonic insulator phase\, can exhibit a fractional quan tum Hall effect at zero magnetic field. I will present physical evidence and conjecture that this phase can be realized in a higher angular mome ntum excitonic paired system in the presence of interactions. LOCATION:PS1.28 CATEGORIES:Theory Seminar LAST-MODIFIED:20191014T075308Z ORGANIZER;CN=Gareth Alexander: END:VEVENT END:VCALENDAR