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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7986
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dc.contributor.authorRoy, Dibyendu-
dc.contributor.authorMishra, Divij-
dc.contributor.authorProsen, Tomaz-
dc.date.accessioned2022-08-25T07:44:26Z-
dc.date.available2022-08-25T07:44:26Z-
dc.date.issued2022-08-19-
dc.identifier.citationPhysical Review E, 2021, Vol 106, p024208en_US
dc.identifier.issn2470-0053 (Online)-
dc.identifier.issn2470-0045-
dc.identifier.urihttp://hdl.handle.net/2289/7986-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en_US
dc.description.abstractWe study spectral form factor in periodically kicked bosonic chains. We consider a family of models where a Hamiltonian with the terms diagonal in the Fock space basis, including random chemical potentials and pairwise interactions, is kicked periodically by another Hamiltonian with nearest-neighbor hopping and pairing terms. We show that, for intermediate-range interactions, the random phase approximation can be used to rewrite the spectral form factor in terms of a bistochastic many-body process generated by an effective bosonic Hamiltonian. In the particle-number conserving case, i.e., when pairing terms are absent, the effective Hamiltonian has a non-Abelian SU(1,1) symmetry, resulting in universal quadratic scaling of the Thouless time with the system size, irrespective of the particle number. This is a consequence of degenerate symmetry multiplets of the subleading eigenvalue of the effective Hamiltonian and is broken by the pairing terms. In such a case, we numerically find a nontrivial systematic system-size dependence of the Thouless time, in contrast to a related recent study for kicked fermionic chains.en_US
dc.language.isoenen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.urihttps://arxiv.org/abs/2203.05439en_US
dc.relation.urihttps://doi.org/10.1103/PhysRevE.106.024208en_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2022arXiv220305439R/abstracten_US
dc.rights2022 American Physical Societyen_US
dc.subjectQuantum chaosen_US
dc.subjectquantum statistical mechanicsen_US
dc.subjectflouqet systemsen_US
dc.subjectmany body techniquesen_US
dc.subjectrandom matrix theoryen_US
dc.titleSpectral form factor in a minimal bosonic model of many-body quantum chaosen_US
dc.typeArticleen_US
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