4 papers
Reduction of the sign problem near in quantum Monte Carlo simulations
Jonathan D'Emidio, Stefan Wessel, Frédéric Mila
Building on a recent investigation of the Shastry-Sutherland model [S. Wessel et al., Phys. Rev. B 98, 174432 (2018)], we develop a general strategy to eliminate the Monte Carlo si…
Kagome model for a quantum spin liquid
Matthew S. Block, Jonathan D'Emidio, Ribhu K. Kaul
We present a study of a simple model antiferromagnet consisting of a sum of nearest neighbor SO() singlet projectors on the Kagome lattice. Our model shares some features with t…
Entanglement entropy from nonequilibrium work
Jonathan D'Emidio
The Rényi entanglement entropy in quantum many-body systems can be viewed as the difference in free energy between partition functions with different trace topologies. We introduce…
First-order Néel-cVBS transition in a model square lattice antiferromagnet
Julia Wildeboer, Nisheeta Desai, Jonathan D'Emidio +1
We study the Néel to four-fold columnar valence bond solid (cVBS) quantum phase transition in a sign free square lattice model. This is the same kind of transition that for $…