We investigate the effect of short-range correlations on the dynamical phase diagram of quantum many-body systems with long-range interactions. Focusing on Ising spin chains with power-law decaying interactions and accounting for short-range correlations by a cluster mean field theory we show that short-range correlations are responsible for the emergence of a chaotic dynamical region. Analyzing the fine details of the phase diagram, we show that the resulting chaotic dynamics bears close analogies with that of a tossed coin. © 2019 American Physical Society.

Dynamical phase diagram of a quantum Ising chain with long-range interactions / Piccitto, Giulia; Žunkovič, Bojan; Silva, Alessandro. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 100:18(2019), pp. 1-5. [10.1103/PhysRevB.100.180402]

Dynamical phase diagram of a quantum Ising chain with long-range interactions

Piccitto, Giulia
;
Žunkovič, Bojan;Silva, Alessandro
2019-01-01

Abstract

We investigate the effect of short-range correlations on the dynamical phase diagram of quantum many-body systems with long-range interactions. Focusing on Ising spin chains with power-law decaying interactions and accounting for short-range correlations by a cluster mean field theory we show that short-range correlations are responsible for the emergence of a chaotic dynamical region. Analyzing the fine details of the phase diagram, we show that the resulting chaotic dynamics bears close analogies with that of a tossed coin. © 2019 American Physical Society.
2019
100
18
1
5
180402
https://doi.org/10.1103/PhysRevB.100.180402
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.100.180402
https://arxiv.org/abs/1906.00691v1
Piccitto, Giulia; Žunkovič, Bojan; Silva, Alessandro
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/110813
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