Universität zu Köln

Lerose, Alessio ORCID: 0000-0003-1555-5327, Marino, Jamir, Gambassi, Andrea and Silva, Alessandro (2019). Prethermal quantum many-body Kapitza phases of periodically driven spin systems. Phys. Rev. B, 100 (10). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

As realized by Kapitza long ago, a rigid pendulum can be stabilized upside down by periodically driving its suspension point with tuned amplitude and frequency. While this dynamical stabilization is feasible in a variety of systems with few degrees of freedom, it is natural to search for generalizations to multiparticle systems. In particular, a fundamental question is whether, by periodically driving a single parameter in a many-body system, one can stabilize an otherwise unstable phase of matter against all possible fluctuations of its microscopic degrees of freedom. In this paper, we show that such stabilization occurs in experimentally realizable quantum many-body systems: A periodic modulation of a transverse magnetic field can make ferromagnetic spin systems with long-range interactions stably trapped around unstable paramagnetic configurations as well as in other unconventional dynamical phases with no equilibrium counterparts. We demonstrate that these quantum Kapitza phases have a long lifetime and can be observed in current experiments with trapped ions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lerose, Alessio UNSPECIFIED orcid.org/0000-0003-1555-5327 UNSPECIFIED Marino, Jamir UNSPECIFIED UNSPECIFIED UNSPECIFIED Gambassi, Andrea UNSPECIFIED UNSPECIFIED UNSPECIFIED Silva, Alessandro UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-133558
DOI:	10.1103/PhysRevB.100.104306
Journal or Publication Title:	Phys. Rev. B
Volume:	100
Number:	10
Date:	2019
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DYNAMIC LOCALIZATION; TRANSITION; SCATTERING; BEHAVIOR; PARTICLE Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13355