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:
CreatorsEmailORCIDORCID Put Code
Lerose, AlessioUNSPECIFIEDorcid.org/0000-0003-1555-5327UNSPECIFIED
Marino, JamirUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zunkovic, BojanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gambassi, AndreaUNSPECIFIEDorcid.org/0000-0003-3450-6125UNSPECIFIED
Silva, AlessandroUNSPECIFIEDorcid.org/0000-0002-5668-7134UNSPECIFIED
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:
KeywordsLanguage
MANY-BODY SYSTEM; ULTRACOLD ATOMSMultiple languages
Physics, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/19230

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