[seminar] [DANAS] Kumar S. Gupta , 14.6. (četvrtak) 14h (c.t.), seminar ZTF-a

[Anđelo Samsarov]

       SEMINAR  TEORIJSKE  FIZIKE


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     Entanglement dynamics following a sudden quench - an exact approach


      Kumar S. Gupta
      Saha Institute of Nuclear Physics,
      Kolkata, India



    Datum:  četvrtak, 14. lipnja 2018.
    Vrijeme: 14 sati c.t.
    Mjesto: IRB, predavaona I krila


   Sažetak:

     We present an exact and fully analytical treatment of the entanglement
dynamics for an isolated system of $N$ coupled oscillators following a
sudden quench of the system parameters. The system is analyzed using the
solutions of the time dependent Schrodinger's equation, which are obtained
by solving the corresponding nonlinear Ermakov equations. The entanglement
entropies exhibit a multi-oscillatory behaviour, where the number of
dynamically generated time scales increases with $N$. The harmonic chains
exhibit entanglement revival and for larger values of $N (> 10)$, we find
near-critical logarithmic scaling for the entanglement entropy, which is
modulated by a time dependent factor. The $N=2$ case is equivalent to the
two site Bose-Hubbard model in the tunneling regime, which is amenable to
empirical realization in cold atom systems.



Voditelj seminara: Anđelo Samsarov (asamsarov at irb.hr)

http://thphys.irb.hr/Seminar/list.htm
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