191 citations · 886 across the 24 of their papers we have counts for
24 papers
Multi-determinant generalized Hartree-Fock wave functions in Monte Carlo calculations
Chia-Chen Chang, Miguel A. Morales
The quantum Monte Carlo algorithm is arguably one of the most powerful computational many-body methods, enabling accurate calculation of many properties in interacting quantum syst…
A correlated Anderson insulator on the honeycomb lattice
Tianxing Ma, Lufeng Zhang, Chia-Chen Chang +2
We study the effect of disorder on the semimetal -- Mott insulator transition in the half-filled repulsive Hubbard model on a honeycomb lattice, a system that features vanishing de…
Auxiliary-field based trial wave functions in quantum Monte Carlo calculations
Chia-Chen Chang, Brenda M. Rubenstein, Miguel A. Morales
Quantum Monte Carlo (QMC) algorithms have long relied on Jastrow factors to incorporate dynamic correlation into trial wave functions. While Jastrow-type wave functions have been w…
Superconductor-Insulator Transition and Fermi-Bose Crossovers
Yen Lee Loh, Mohit Randeria, Nandini Trivedi +2
The direct transition from an insulator to a superconductor (SC) in Fermi systems is a problem of long-standing interest, which necessarily goes beyond the standard BCS paradigm of…
Competing exotic quantum phases of spin- ultra-cold lattice bosons with extended spin interactions
Chia-Chen Chang, Valéry G. Rousseau, Richard T. Scalettar +1
Advances in pure optical trapping techniques now allow the creation of degenerate Bose gases with internal degrees of freedom. Systems such as Rb, K or Na…
Entanglement properties of the antiferromagnetic-singlet transition in the Hubbard model on bilayer square lattices
Chia-Chen Chang, Rajiv R. P. Singh, Richard T. Scalettar
We calculate the bipartite \Renyi entanglement entropy of an bilayer Hubbard model using a determinantal quantum Monte Carlo method recently proposed by Grover…