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SUMMARY:Bret Underwood (Pacific Lutheran University)
DTSTART:20201029T150000Z
DTEND:20201029T160000Z
DTSTAMP:20260423T010011Z
UID:HEPTUW/10
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/HEPTUW/10/">
 Cosmological Chaos\, Complexity\, and the OTOC</a>\nby Bret Underwood (Pac
 ific Lutheran University) as part of HEP seminars TU Wien (Vienna)\n\n\nAb
 stract\nSeveral approaches to investigating quantum chaos have recently em
 erged\, including quantum circuit complexity and the out-of-time-order cor
 relator (OTOC). In this talk\, I will briefly introduce these ideas and ap
 ply them to squeezed states\, including the squeezed state description of 
 cosmological perturbations on a variety of cosmological backgrounds\, such
  as de Sitter accelerated expansion. Some intriguing results from this inv
 estigation include a bound on the growth rate of cosmological complexity r
 eminiscent of a similar bound on the quantum Lyapunov exponent\, and the o
 bservation that among all cosmological backgrounds\, only de Sitter space 
 leads to the exponential growth of the OTOC that is a signature of quantum
  chaos.\n
LOCATION:https://researchseminars.org/talk/HEPTUW/10/
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