On computing non-equilibrium dynamics following a quench

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  • Additional Information
    • Publication Date:
      2019
    • Collection:
      Condensed Matter
    • Abstract:
      Computing the non-equilibrium dynamics that follows a quantum quench is difficult, even in exactly solvable models. Results are often predicated on the ability to compute overlaps between the initial state and eigenstates of the Hamiltonian that governs time-evolution. It is, however, generically not possible to find these analytically and overlaps are known in only a handful of cases. Here we develop a numerical approach to preferentially generate the states with high overlaps for a quantum quench starting from the ground state of an initial Hamiltonian. We use these preferentially generated states, in combination with a "high overlap states truncation scheme" and a modification of the numerical renormalization group, to compute non-equilibrium dynamics following a quench in the Lieb-Liniger model. The method is non-perturbative, works for reasonable numbers of particles, and applies to both continuum and lattice systems. It can also be easily extended to more complicated scenarios, including those with integrability breaking.
      Comment: 46 pages, 20 figures. Comments welcome
    • Accession Number:
      edsarx.1911.11101
  • Citations
    • ABNT:
      ROBINSON, N. J.; DE KLERK, A. J. J. M.; CAUX, J.-S. On computing non-equilibrium dynamics following a quench. [s. l.], 2019. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.11101&custid=s6224580. Acesso em: 8 abr. 2020.
    • AMA:
      Robinson NJ, de Klerk AJJM, Caux J-S. On computing non-equilibrium dynamics following a quench. 2019. http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.11101&custid=s6224580. Accessed April 8, 2020.
    • APA:
      Robinson, N. J., de Klerk, A. J. J. M., & Caux, J.-S. (2019). On computing non-equilibrium dynamics following a quench.
    • Chicago/Turabian: Author-Date:
      Robinson, Neil J., A. J. J. M. de Klerk, and Jean-Sébastien Caux. 2019. “On Computing Non-Equilibrium Dynamics Following a Quench.” http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.11101&custid=s6224580.
    • Harvard:
      Robinson, N. J., de Klerk, A. J. J. M. and Caux, J.-S. (2019) ‘On computing non-equilibrium dynamics following a quench’. Available at: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.11101&custid=s6224580 (Accessed: 8 April 2020).
    • Harvard: Australian:
      Robinson, NJ, de Klerk, AJJM & Caux, J-S 2019, ‘On computing non-equilibrium dynamics following a quench’, viewed 8 April 2020, .
    • MLA:
      Robinson, Neil J., et al. On Computing Non-Equilibrium Dynamics Following a Quench. 2019. EBSCOhost, search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.11101&custid=s6224580.
    • Chicago/Turabian: Humanities:
      Robinson, Neil J., A. J. J. M. de Klerk, and Jean-Sébastien Caux. “On Computing Non-Equilibrium Dynamics Following a Quench,” 2019. http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.11101&custid=s6224580.
    • Vancouver/ICMJE:
      Robinson NJ, de Klerk AJJM, Caux J-S. On computing non-equilibrium dynamics following a quench. 2019 [cited 2020 Apr 8]; Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsarx&AN=edsarx.1911.11101&custid=s6224580