%0 Journal Article
%A Valdez, Marc Andrew
%A Shchedrin, Gavriil
%A Heimsoth, Martin
%A Creffield, Charles
%A Sols Lucía, Fernando
%A Carr, Lincoln D.
%T Many-body quantum chaos and entanglement in a quantum ratchet
%D 2018
%@ 0031-9007
%U https://hdl.handle.net/20.500.14352/12186
%X We uncover signatures of quantum chaos in the many-body dynamics of a Bose-Einstein condensate-based quantum ratchet in a toroidal trap. We propose measures including entanglement, condensate depletion, and spreading over a fixed basis in many-body Hilbert space, which quantitatively identify the region in which quantum chaotic many-body dynamics occurs, where random matrix theory is limited or inaccessible. With these tools, we show that many-body quantum chaos is neither highly entangled nor delocalized in the Hilbert space, contrary to conventionally expected signatures of quantum chaos.
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