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SUMMARY:Trajectory-based multi-configuration approaches to interacting man
 y-body quantum dynamics
DTSTART:20251030T171500
DTEND:20251030T181500
DTSTAMP:20261006T055113Z
UID:6c164c3de416c74e81d873253e202289f200f68556e84d1ebd59efdd
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Frank Großmann\nWe give a brief review of trajectory-ba
 sed methods to solve the time-dependent Schrödinger equation for Bose-Hub
 bard (BH) models and other model systems of interest in chemical physics. 
 In order of increasing accuracy these are the truncated Wigner approximati
 on [1]\, the Herman-Kluk propagator [2]\, the coupled coherent states appr
 oach [3] and a fully variational multi-configuration Gaussian method [4] t
 hat has recently been extended by the use of generalized coherent states [
 5]. The first three methods are based on classical trajectories\, while th
 e last method employs "quantum" trajectories.\n\nWe then discuss the resul
 ts of benchmark calculations for BH model systems with increasing well num
 bers and highlight the fact that the more advanced methods are well suited
  to reveal genuine quantum effects beyond initial state preparation [6]. F
 urthermore\, in the Mott insulator regime\, a surprising quantum enhanceme
 nt of thermalization is found [7].\n\n[1] M. Hillary et al\, Phys. Rep. 10
 6\, 121 (1984)\n[2] M. Herman and E. Kluk\, Chem. Phys. 91\, 27 (1984)\n[3
 ] D. V. Shalashilin and M. Child\, J. Chem. Phys. 113 10028 (2000)\n[4] M.
  Werther\, S. Loho Choudhury and F. Grossmann\, Int. Rev. Phys. Chem. 40\,
  81 (2021)\n[5] Y. Qiao and F. Grossmann\, Phys. Rev. A 103\, 042209 (2021
 )\n[6] Y. Qiao and F. Grossmann\, Front. Phys. 11\, 1221614 (2023)\n[7] Y.
  Qiao et al.\, Phys. Rev. Lett. 135\, 060404 (2025)\n 
LOCATION:CH G 1495 https://plan.epfl.ch/?room==CH%20G1%20495
STATUS:CONFIRMED
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