Abstract
Abstract
Thanks to their prominent collective character, long-range interactions promote information spreading and generate forms of entanglement scaling, which cannot be observed in traditional systems with local interactions. In this work, we study the asymptotic behavior of the entanglement entropy for Kitaev chains with long-range hopping and pairing couplings decaying with a power law of the distance. We provide a fully-fledged analytical and numerical characterization of the asymptotic growth of the ground state entanglement in the large subsystem size limit, finding that the truly non-local nature of the model leads to an extremely rich phenomenology. Most significantly, in the strong long-range regime, we discovered that the system ground state may have a logarithmic, fractal, or volume-law entanglement scaling, depending on the value of the chemical potential and on the strength of the power law decay.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference103 articles.
1. A. Campa, T. Dauxois, D. Fanelli and S. Ruffo, Physics of Long-Range Interacting Systems, Oxford University Press (2014), https://doi.org/10.1093/acprof:oso/9780199581931.001.0001.
2. N. Defenu, T. Donner, T. Macrì, G. Pagano, S. Ruffo and A. Trombettoni, Long-range interacting quantum systems, arXiv:2109.01063 [INSPIRE].
3. S. Xu, Long-Range Coupling Affects Entanglement Dynamics, Physics 15 (2022) 2.
4. A. Russomanno, F. Iemini, M. Dalmonte and R. Fazio, Floquet time crystal in the lipkin-meshkov-glick model, Phys. Rev. B 95 (2017) 214307.
5. F.M. Surace, A. Russomanno, M. Dalmonte, A. Silva, R. Fazio and F. Iemini, Floquet time crystals in clock models, Phys. Rev. B 99 (2019) 104303 [arXiv:1811.12426] [INSPIRE].
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