Talks by Juan Carrasquilla

Superfluid to normal phase transition in strongly interacting bosons in two and three dimensions.

Juan Carrasquilla Vector Institute for Artificial Intelligence
Using quantum Monte Carlo simulations, we investigate the finite-temperature phase diagram of hard-core bosons (XY model) in two- and three-dimensional square lattices. To determine the phase boundaries, we perform a finite-size scaling analysis of the condensate fraction and/or the superfluid stiffness. We then discuss how this diagrams can be measured in experiments with trapped ultracold gases, where the systems are inhomogeneous.