Universität zu Köln

Lerose, Alessio ORCID: 0000-0003-1555-5327, Marino, Jamir, Zunkovic, Bojan, Gambassi, Andrea ORCID: 0000-0003-3450-6125 and Silva, Alessandro ORCID: 0000-0002-5668-7134 (2018). Chaotic Dynamical Ferromagnetic Phase Induced by Nonequilibrium Quantum Fluctuations. Phys. Rev. Lett., 120 (13). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

We investigate the robustness of a dynamical phase transition against quantum fluctuations by studying the impact of a ferromagnetic nearest-neighbor spin interaction in one spatial dimension on the nonequilibrium dynamical phase diagram of the fully connected quantum Ising model. In particular, we focus on the transient dynamics after a quantum quench and study the prethermal state via a combination of analytic time-dependent spin wave theory and numerical methods based on matrix product states. We find that, upon increasing the strength of the quantum fluctuations, the dynamical critical point fans out into a chaotic dynamical phase within which the asymptotic ordering is characterized by strong sensitivity to the parameters and initial conditions. We argue that such a phenomenon is general, as it arises from the impact of quantum fluctuations on the mean-field out of equilibrium dynamics of any system which exhibits a broken discrete symmetry.

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 Zunkovic, Bojan UNSPECIFIED UNSPECIFIED UNSPECIFIED Gambassi, Andrea UNSPECIFIED orcid.org/0000-0003-3450-6125 UNSPECIFIED Silva, Alessandro UNSPECIFIED orcid.org/0000-0002-5668-7134 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-192300
DOI:	10.1103/PhysRevLett.120.130603
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	120
Number:	13
Date:	2018
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MANY-BODY SYSTEM; ULTRACOLD ATOMS Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19230