August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

Dynamic structure factor from real time simulations using the time-dependent VMC method

Not scheduled
Room E

Room E

Talk Atomic Physics and Quantum Optics Atomic Physics and Quantum Optics


Robert E. Zillich (JKU Linz)


We extend the time-dependent Variational Monte Carlo method to a new way of accessing the dynamic structure factor of strongly correlated one-dimensional bosonic systems in continuous space. In order to extract the response of the system in the form of density fluctuations, we use the stochastic noise inherent to this Monte Carlo simulations. We present the details of the method and show the application to bosons in an optical lattice, where the transition from the superfluid to the Mott insulating phase is manifested in the opening of a gap in the dispersion relation. The method can also be used to study mixtures of different bosonic species and non-linear excitations.

Primary author

Mathias Gartner (Johannes Kepler University Linz)


Robert E. Zillich (JKU Linz) Ferran Mazzanti (Universitat Politècnica de Catalunya)

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