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Entanglement at a Two-Dimensional Quantum Critical Point: a Numerical Linked Cluster Expansion Study
Ann B. Kallin, Katharine Hyatt, Rajiv R. P. Singh +1
We develop a method to calculate the bipartite entanglement entropy of quantum models, in the thermodynamic limit, using a Numerical Linked Cluster Expansion (NLCE) involving only…
Detecting Classical Phase Transitions with Renyi Mutual Information
Jason Iaconis, Stephen Inglis, Ann B. Kallin +1
By developing a method to represent the Renyi entropies via a replica-trick on classical statistical mechanical systems, we introduce a procedure to calculate the Renyi Mutual Info…
A Wang-Landau method for calculating Renyi entropies in finite-temperature quantum Monte Carlo simulations
Stephen Inglis, Roger G. Melko
We implement a Wang-Landau sampling technique in quantum Monte Carlo (QMC) for the purpose of calculating the Renyi entanglement entropies and associated mutual information. The al…
Topological Sector Fluctuations and Curie Law Crossover in Spin Ice
Ludovic D. C. Jaubert, Mark J. Harris, Tom Fennell +3
At low temperatures, a spin ice enters a Coulomb phase - a state with algebraic correlations and topologically constrained spin configurations. In Ho2Ti2O7, we have observed experi…
Thermodynamic singularities in the entanglement entropy at a 2D quantum critical point
Rajiv R. P. Singh, Roger G. Melko, Jaan Oitmaa
We study the bipartite entanglement entropy of the two-dimensional (2D) transverse-field Ising model in the thermodynamic limit using series expansion methods. Expansions are devel…