Quantum Monte Carlo study of ultracold bosons in optical lattices (2008)
In this dissertation I present results for lattice boson systems based on quantum Monte Carlo simulations by the Worm algorithm. Lattice bosons can be realized by ultracold gases in optical lattices...
Quantum Monte Carlo study of ultracold bosons in optical lattices (2008)
In this dissertation I present results for lattice boson systems based on quantum Monte Carlo simulations by the Worm algorithm. Lattice bosons can be realized by ultracold gases in optical lattices...
Monte Carlo study of two-dimensional Bose-Hubbard model (2007)
Capogrosso-Sansone, Barbara, Söyler, Şebnem Güneş, Prokof'ev, Nikolay, Svistunov, Boris
One of the most promising applications of ultracold gases in optical lattices is the possibility to use them as quantum emulators of more complex condensed matter systems. We provide benchmark...
On-site number statistics of ultracold lattice bosons (2006)
Capogrosso-Sansone, Barbara, Kozik, Evgeny, Prokof'ev, Nikolay, Svistunov, Boris
We study on-site occupation number fluctuations in a system of interacting bosons in an optical lattice. The ground-state distribution is obtained analytically in the limiting cases of strong and...