BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Stewart Blusson Quantum Matter Institute - ECPv6.17.4//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Stewart Blusson Quantum Matter Institute
X-ORIGINAL-URL:https://qmi.ubc.ca
X-WR-CALDESC:Events for Stewart Blusson Quantum Matter Institute
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Vancouver
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20220313T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20221106T090000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20230312T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20231105T090000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20240310T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20241103T090000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20230323T100000
DTEND;TZID=America/Vancouver:20230323T110000
DTSTAMP:20230322T231320Z
CREATED:20230317T210430Z
LAST-MODIFIED:20230322T231320Z
UID:5607-1679565600-1679569200@qmi.ubc.ca
SUMMARY:CM Seminar: Xie Chen – California Institute of Technology:  Fracton and Chern-Simons Theory
DESCRIPTION:Xie Chen – California Institute of Technology\nTitle: Fracton and Chern-Simons Theory \nAbstract: Fracton order describes the peculiar phenomena that point excitations in certain strongly interacting systems either cannot move at all or can only move in a lower dimensional sub-manifold. It has recently been discovered in various lattice models\, tensor gauge theories\, etc. In this talk\, we discuss how another powerful field theory framework — the 2+1D Chern-Simons (CS) gauge theory — can be used to provide new insight and explore new possibilities in 3+1D fracton order. 2+1D U(1) gauge theories with a CS term provide a simple and complete characterization of 2+1D Abelian topological orders. To study 3+1D fracton order\, we extend the theory by taking the number of component gauge fields to be infinity. In the simplest case of infinite-component CS gauge theory\, different components do not couple to each other and the theory describes a decoupled stack of 2+1D fractional Quantum Hall systems with quasi-particles moving only in 2D planes — hence a fractonic system. More interestingly\, we find that when the component gauge fields do couple through the CS term\, more varieties of fractonic orders are possible. For example\, they may describe foliated fractonic systems which extends the framework found in exactly solvable models. Moreover\, we find examples which lie beyond the foliation framework\, characterized by 2D excitations of infinite order and braiding statistics that are not strictly local. \nSpeaker Bio: Xie Chen is a Professor of Theoretical Physics at the California Institute of Technology. Dr. Chen obtained her Ph.D. degree from MIT in 2012 and was a Miller research fellow at the University of California\, Berkeley before joining Caltech in 2014. Dr. Chen is a condensed matter theorist studying emergent phenomena in strongly interacting quantum many-body systems. She received the New Horizons in Physics Prize from the Breakthrough Foundation in 2020 and was named a Simons Investigator in 2021. \n  \n(This event is virtual and can be watched at the link below or in BRIM/AMPL 311)
URL:https://qmi.ubc.ca/event/cm-seminar-xie-chen-california-institute-of-technology-fracton-and-chern-simons-theory/
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
END:VCALENDAR