Matthias Troyer

TL;DR: Using dynamical mean-field theory and exact diagonalization, the phase diagram of the repulsive Haldane-Hubbard model is studied, varying the interaction strength and the sublattice potential difference to explain the latter phase by a spontaneous symmetry breaking.

TL;DR: A comprehensive review on SSE is given and benchmark calculations of SSE scaling behavior with system size and inverse temperature are presented, and the loop algorithm is compared, whose scaling is known to be one of the best of all QMC methods.

TL;DR: In this paper, the ground state properties and thermodynamics of the one-dimensional SU(4) symmetric spin system with orbital degeneracy were investigated using the quantum Monte Carlo loop algorithm, and the spin-spin correlation functions exhibit a 4-site periodicity, and their low-temperature behavior is controlled by two correlation lengths that diverge like the inverse temperature.

TL;DR: Here this work provides a framework to analyse realistic QRNGs and to determine the post-processing that is necessary to turn their raw output into true randomness.

TL;DR: In this paper, the authors discuss the extension of the SES-CC formalism to unitary CC formalisms, which results in a Hermitian form of the effective Hamiltonian.