BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Physics & Astronomy - ECPv6.15.20//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://uwm.edu/physics
X-WR-CALDESC:Events for Physics & Astronomy
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Chicago
BEGIN:DAYLIGHT
TZOFFSETFROM:-0600
TZOFFSETTO:-0500
TZNAME:CDT
DTSTART:20190310T080000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0500
TZOFFSETTO:-0600
TZNAME:CST
DTSTART:20191103T070000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0600
TZOFFSETTO:-0500
TZNAME:CDT
DTSTART:20200308T080000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0500
TZOFFSETTO:-0600
TZNAME:CST
DTSTART:20201101T070000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0600
TZOFFSETTO:-0500
TZNAME:CDT
DTSTART:20210314T080000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0500
TZOFFSETTO:-0600
TZNAME:CST
DTSTART:20211107T070000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20200228T140000
DTEND;TZID=America/Chicago:20200228T150000
DTSTAMP:20260527T051623
CREATED:20200225T153653Z
LAST-MODIFIED:20200225T153653Z
UID:10390512-1582898400-1582902000@uwm.edu
SUMMARY:Math and Physics Joint Colloquium - Dr. Tomáš Bzdušek
DESCRIPTION:Dr. Tomáš Bzdušek\, Paul Scherrer Institute and University of Zurich \nMathematics of Topological Insulators and Semimetals \nMany properties of crystalline materials\, such as conductivity or the tendency to become magnetically ordered at low temperatures\, derive from their so-called “electronic band structure.” Although this is an established notion in solid state physics\, dating back to the early days of quantum mechanics\, our understanding of electronic band structure has been greatly challenged and revolutionized over the past 15 years by the discovery of so-called topological materials. \nIn this colloquium\, I will first show how topology enters the description of electrons in crystalline solids – whether they are insulators\, semimetals or metals. This is achieved by encoding the electron Hamiltonian as a fiber bundle\, and by characterizing this bundle using homotopy theory. In the second part\, I will focus on our latest results\, which reveal a previously overlooked non-Abelian topological invariant. This discovery suggests possible braiding phenomena in the electronic band structure\, which I illustrate on a material example ZrTe. \nColloquium flyer available here
URL:https://uwm.edu/physics/event/math-and-physics-joint-colloquium-dr-tomas-bzdusek/
LOCATION:EMS E495\, 3200 North Cramer Street\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
END:VEVENT
END:VCALENDAR