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Calendar of Physics Talks Vienna
| Ordered phases of non-unitary Floquet quantum matter |
| Speaker: | Vadim Oganesyan (The City University of New York) |
| Abstract: | While quantum evolution is traditionally formulated in continuous time, recent developments in non-
equilibrium many-body physics exploited discrete time quantum circuits where the interplay of unitary
evolution and quantum measurements can be studied in detail. This generalization is also natural in the
context of synthetic quantum matter, where dynamics may be applied stroboscopically, e.g. with
quantum gates. We explore a mathematical connection between quantum circuits and formal analytic
continuation of classical partition sums in one dimension higher (e.g. the Yang-Lee and Fisher zeroes).
We find that certain Ising models host novel ordered phases, with magnetic order modulating in space
or time, with periodicity determined dynamically, e.g. by interactions or measurement rate. This talk is
mostly based on ref. https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.4. |
| Date: | Wed, 02.08.2023 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | Wiedner HauptstraÃe 8-10, 1040 Wien Seminarraum DC rot 07 (roter Bereich, 7. OG) or via zoom: https://tuwien.zoom.us/j/63020566887?pwd=RmYvRmVwOGU5YVBrOHpodWRKaHFWQT09 |
| Contact: | Silke Buehler-Paschen |
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