FYI -------- Weitergeleitete Nachricht -------- Betreff: REMINDER: Block Lecture by Michaele Fleischhauer at LUH, 22./23. May 2025, 10:15 -11:45 am Datum: Wed, 21 May 2025 07:23:29 +0200 Von: Anke Schmidt <anke.schmidt@DQ-MAT.UNI-HANNOVER.DE> Antwort an: Anke Schmidt <anke.schmidt@DQ-MAT.UNI-HANNOVER.DE> An: MEMBERS-DQMAT@LISTSERV.UNI-HANNOVER.DE Dear DQ-mat members and interested scientists, We are are pleased to announce the next Block Lecture which will take place on *_Thursday, 22.May 2025_*_- 10:15- 11.45 am - Part I __LUH__, Building 1101, Room D326, Welfengarten 1, 30167 Hannover _ **_Friday, 23 May 2025_**_- 10:15 - 11:45 am - Part II _ _LUH, Room 0001, Building 3430, LNQE Building, Schneiderberg 39, 30167 Hannover_ Block Lectureby *Michael Fleischhauer - *University of Kaiserslautern, Germany Title: *Topology in open many-body systems* Abstract: Topological states of matter have fascinated physicists since a long time. The notion of topology is however ususally associated with ground states of (many-body)-Hamiltonians, which are pure. So what is left of it at finite temperatures and can topological protection be extended to non-equilibrium steady states (NESS) of open systems? Can suitable observables be constructed that preserve the integrity of topological invariants for mixed states and what are measurable consequences of their existence? Can we classify the topology of finite-temperature and NESS using generalized symmetries? Access data for the transfer: https://uni-hannover.webex.com/uni-hannover-en/j.php?MTID=mac7e81392b3eb1c4d... Best regards, Anke Schmidt -- Leibniz Universität Hannover DQ-Mat-Office, Room 308 Callinstraße 36 30167 Hannover Tel: +49 511 76214887 Fax: +49 511 76217243 Email:anke.schmidt@dq-mat.uni-hannover.de https://www.dq-mat.uni-hannover.de/ https://www.quest-lfs.uni-hannover.de/ https://www.hitec.uni-hannover.de/ https://www.quantumfrontiers.uni-hannover.de/ https://www.qvls.de