Titel | Referent | Datum | Ort |
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Gemeinsames TKM-TFP Seminar | Garst, Mirlin, Rockstuhl, Schmalian, Shnirman |
Montag, 14.00-15.30 Uhr |
10-01 |
TFP Institutsseminar | Garst, Rockstuhl |
Dienstag, 13.00-14.00 Uhr |
10-01 |
IQMT Seminar | Campus Nord, Geb. 425 |
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Physikalisches Kolloquium | Freitag, 15.45-17.15 Uhr |
Lehmann HS |
Kolloquium über Theoretische Physik |
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Vortragender: | Markus Heyl |
Datum: | 25.07.2019 17:30 |
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Ort: | Otto Lehmann Lecture Hall, Bldg. No. 30.22, Campus South |
Zugehörigkeit: | Max Planck Institute for the Physics of Complex Systems, Dresden |
Gastgeber: | Dr. Elmer Doggen |
Abstract
In this talk I will show how lattice gauge theories can display many-body localization dynamics in the absence of disorder as a consequence of local constraints induced by gauge invariance. The starting point is the observation that, for some generic homogeneous initial conditions, the time-evolved state can be decomposed into different so-called superselection sectors as a consequence of Gauss law in such a way that it realizes an effective disorder average. By carrying out extensive exact simulations on the real-time dynamics of a lattice Schwinger model, describing the coupling between U(1) gauge fields and staggered fermions, it is shown that the dynamics can become nonergodic leading to a slow, double-logarithmic entanglement growth. Further, it will be shown how the nonergodic behavior induced by this localization mechanism can give rise to eigenstate phases in homogeneous systems.
Specifically, I will introduce a model for a 'gauge time crystal' breaking spatiotemporal symmetries.