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SUMMARY:Bret Underwood (Pacific Lutheran University)
DTSTART:20201127T140000Z
DTEND:20201127T150000Z
DTSTAMP:20260423T035817Z
UID:QGaSLAB/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/QGaSLAB/1/">
 Cosmological Chaos\, Complexity\, and the OTOC</a>\nby Bret Underwood (Pac
 ific Lutheran University) as part of QGaSLAB Seminar Series\n\n\nAbstract\
 nSeveral approaches to investigating quantum chaos have recently emerged\,
  including quantum circuit complexity and the out-of-time-order correlator
  (OTOC). In this talk\, I will briefly introduce these ideas and apply the
 m to squeezed states\, including the squeezed state description of cosmolo
 gical perturbations on a variety of cosmological backgrounds\, such as de 
 Sitter accelerated expansion. Some intriguing results from this investigat
 ion include a bound on the growth rate of cosmological complexity reminisc
 ent of a similar bound on the quantum Lyapunov exponent\, and the observat
 ion that among all cosmological backgrounds\, only de Sitter space leads t
 o the exponential growth of the OTOC that is a signature of quantum chaos.
 \n
LOCATION:https://researchseminars.org/talk/QGaSLAB/1/
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