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- W4384200585 abstract "Recent experiments demonstrated that single-particle quantum walks can reveal the topological properties of single-particle states. Here, we generalize this picture to the many-body realm by focusing on multiparticle quantum walks of strongly interacting fermions. After injecting $N$ particles with multiple flavors in the interacting $text{SU}(N)$ Su-Schrieffer-Heeger chain, their multiparticle continuous-time quantum walk is monitored by a variety of methods. We find that the many-body Berry phase in the $N$-body part of the spectrum signals a topological transition upon varying the dimerization, similarly to the single-particle case. This topological transition is captured by the single- and many-body mean chiral displacement during the quantum walk and remains present for strong interaction as well as for moderate disorder. Our predictions are well within experimental reach for cold atomic gases and can be used to detect the topological properties of many-body excitations through dynamical probes." @default.
- W4384200585 created "2023-07-14" @default.
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- W4384200585 date "2023-07-13" @default.
- W4384200585 modified "2023-10-14" @default.
- W4384200585 title "Multiparticle quantum walk: A dynamical probe of topological many-body excitations" @default.
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- W4384200585 doi "https://doi.org/10.1103/physrevb.108.035126" @default.
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