Universität zu Köln

Wolff, Stefan, Sheikhan, Ameneh, Diehl, Sebastian and Kollath, Corinna (2020). Nonequilibrium metastable state in a chain of interacting spinless fermions with localized loss. Phys. Rev. B, 101 (7). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

We investigate a chain of spinless fermions with nearest-neighbor interactions that are subject to a local loss process. We determine the time evolution of the system using matrix product state methods. We find that at intermediate times, a metastable state is formed, which has very different properties than usual equilibrium states. In particular, in a region around the loss, the filling is reduced, while Friedel oscillations with a period corresponding to the original filling continue to exist. The associated momentum distribution is emptied at all momenta by the loss process and the Fermi edge remains approximately at its original value. Even in the presence of strong interactions, where a redistribution by the scattering is naively expected, such a regime can exist over a long timescale. Additionally, we point out the existence of the interaction-dependent Zeno effect in such a system.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Wolff, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED Sheikhan, Ameneh UNSPECIFIED UNSPECIFIED UNSPECIFIED Diehl, Sebastian UNSPECIFIED UNSPECIFIED UNSPECIFIED Kollath, Corinna UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-343822
DOI:	10.1103/PhysRevB.101.075139
Journal or Publication Title:	Phys. Rev. B
Volume:	101
Number:	7
Date:	2020
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Theoretical Physics
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/34382