Results 21 to 30 of about 926,631 (217)

Some recent developments in auxiliary-field quantum Monte Carlo for real materials. [PDF]

open access: yesJournal of Chemical Physics, 2020
The auxiliary-field quantum Monte Carlo (AFQMC) method is a general numerical method for correlated many-electron systems, which is being increasingly applied in lattice models, atoms, molecules, and solids. Here, we introduce the theory and algorithm of
Hao Shi, Shiwei Zhang
semanticscholar   +1 more source

Matrix-Model Simulations Using Quantum Computing, Deep Learning, and Lattice Monte Carlo [PDF]

open access: yesPRX Quantum, 2021
Matrix quantum mechanics plays various important roles in theoretical physics, such as a holographic description of quantum black holes. Understanding quantum black holes and the role of entanglement in a holographic setup is of paramount importance for ...
E. Rinaldi   +6 more
semanticscholar   +1 more source

Quantum-accelerated multilevel Monte Carlo methods for stochastic differential equations in mathematical finance [PDF]

open access: yesQuantum, 2020
Inspired by recent progress in quantum algorithms for ordinary and partial differential equations, we study quantum algorithms for stochastic differential equations (SDEs).
Dong An   +5 more
semanticscholar   +1 more source

QMCPACK: an open source ab initio quantum Monte Carlo package for the electronic structure of atoms, molecules and solids [PDF]

open access: yesJournal of Physics: Condensed Matter, 2018
QMCPACK is an open source quantum Monte Carlo package for ab initio electronic structure calculations. It supports calculations of metallic and insulating solids, molecules, atoms, and some model Hamiltonians.
Jeongnim Kim   +49 more
semanticscholar   +1 more source

Variational Quantum Monte Carlo Method with a Neural-Network Ansatz for Open Quantum Systems. [PDF]

open access: yesPhysical Review Letters, 2019
The possibility to simulate the properties of many-body open quantum systems with a large number of degrees of freedom (d.o.f.) is the premise to the solution of several outstanding problems in quantum science and quantum information. The challenge posed
A. Nagy, V. Savona
semanticscholar   +1 more source

Quantum Monte Carlo Methods in Nuclear Physics: Recent Advances [PDF]

open access: yesAnnual Review of Nuclear and Particle Science, 2019
In recent years, the combination of precise quantum Monte Carlo (QMC) methods with realistic nuclear interactions and consistent electroweak currents, in particular those constructed within effective field theories (EFTs), has led to new insights in ...
J. Lynn, I. Tews, S. Gandolfi, A. Lovato
semanticscholar   +1 more source

Scaling advantage over path-integral Monte Carlo in quantum simulation of geometrically frustrated magnets

open access: yesNature Communications, 2021
The promise of quantum computing lies in harnessing programmable quantum devices for practical applications such as efficient simulation of quantum materials and condensed matter systems.
Andrew D. King   +53 more
semanticscholar   +1 more source

Sign-Problem-Free Fermionic Quantum Monte Carlo: Developments and Applications [PDF]

open access: yesAnnual Review of Condensed Matter Physics, 2018
Reliable simulations of correlated quantum systems, including high-temperature superconductors and frustrated magnets, are increasingly desired nowadays to further our understanding of essential features in such systems.
Zi-Xiang Li, H. Yao
semanticscholar   +1 more source

Fast and accurate quantum Monte Carlo for molecular crystals [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2018
Significance Computational approaches based on the fundamental laws of quantum mechanics are now integral to almost all materials design initiatives in academia and industry.
Andrea Zen   +5 more
semanticscholar   +1 more source

Excited States with Selected Configuration Interaction-Quantum Monte Carlo: Chemically Accurate Excitation Energies and Geometries [PDF]

open access: yesJournal of Chemical Theory and Computation, 2019
We employ quantum Monte Carlo to obtain chemically accurate vertical and adiabatic excitation energies, and equilibrium excited-state structures for the small, yet challenging, formaldehyde and thioformaldehyde molecules.
M. Dash   +4 more
semanticscholar   +1 more source

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