140 citations
- Lawrence Livermore National LaboratoryUS11 papers
- California Institute of TechnologyUS3 papers
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5 papers · 1 filter
A Phaseless Auxiliary-Field Quantum Monte Carlo Perspective on the Uniform Electron Gas at Finite Temperatures: Issues, Observations, and Benchmark Study
Joonho Lee, Miguel A. Morales, Fionn D. Malone
We investigate the viability of the phaseless finite temperature auxiliary field quantum Monte Carlo (ph-FT-AFQMC) method for ab initio systems using the uniform electron gas as a…
Signatures of folded branches in the scanning gate microscopy of ballistic electronic cavities
Keith R. Fratus, Camille Le Calonnec, Rodolfo A. Jalabert +2
We demonstrate the emergence of classical features in electronic quantum transport for the scanning gate microscopy response in a cavity defined by a quantum point contact and a mi…
The performance of phaseless auxiliary-field quantum Monte Carlo on the ground state electronic energy of benzene
Joonho Lee, Fionn D. Malone, David R. Reichman
The ground state electronic energy of benzene is the focus of a recent blind test by Eriksen and co-workers [arXiv:2008.02678]. In this note, we report the phaseless auxiliary-fiel…
Accelerating the Convergence of Auxiliary-Field Quantum Monte Carlo inSolids with Optimized Gaussian Basis Sets
Miguel A. Morales, Fionn D. Malone
We investigate the use of optimized correlation consistent gaussian basis sets for the study of insulating solids with auxiliary-field quantum Monte Carlo (AFQMC). The exponents of…
Systematic Comparison and Cross-validation of Fixed-Node Diffusion Monte Carlo and Phaseless Auxiliary-Field Quantum Monte Carlo in Solids
Fionn D. Malone, Anouar Benali, Miguel A. Morales +3
Quantum Monte Carlo (QMC) methods are some of the most accurate methods for simulating correlated electronic systems. We investigate the compatibility, strengths and weaknesses of…