Results 131 to 140 of about 637,276 (316)
Quantum annealing enhanced Markov-Chain Monte Carlo
Scientific ReportsIn this study, we propose quantum annealing-enhanced Markov Chain Monte Carlo (QAEMCMC), where QA is integrated into the MCMC subroutine. QA efficiently explores low-energy configurations and overcomes local minima, enabling the generation of proposal ...
Shunta Arai, Tadashi Kadowaki
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Pairing correlations in the two-layer attractive Hubbard model
New Journal of Physics, 2014 Studies of systems with two fermionic bands (or equivalently, layers) with repulsive interaction strength U have a long history, with the periodic Anderson model (PAM) being one of the most frequently considered Hamiltonians.
Aleksander Zujev +3 more
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Quantum dynamics in transverse-field Ising models from classical networks
SciPost Physics, 2018 The efficient representation of quantum many-body states with classical resources is a key challenge in quantum many-body theory. In this work we analytically construct classical networks for the description of the quantum dynamics in transverse-field
Markus Schmitt, Markus Heyl
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Monte Carlo study of the pseudogap and superconductivity emerging from quantum magnetic fluctuations
Nature Communications, 2022 The origin of pseudogap in high-T c superconductors remains a big puzzle. Here, the authors report numerical evidence of pseudogap behavior employing Quantum Monte Carlo algorithm emerging from pairing fluctuations in a quantum-critical non-Fermi liquid,
Weilun Jiang +6 more
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Analytic Continuation of Quantum Monte Carlo Data by Stochastic Analytical Inference
, 2009 We present an algorithm for the analytic continuation of imaginary-time quantum Monte Carlo data which is strictly based on principles of Bayesian statistical inference.
A. Papoulis +7 more
core +1 more source
Journal of Chemical Physics, 2018 We propose to accelerate convergence toward full configuration interaction (FCI) energetics by using the coupled-cluster approach, in which singly and doubly excited clusters, needed to determine the energy, are iterated in the presence of their three ...
J. E. Deustua +3 more
semanticscholar +1 more source
Entanglement spectroscopy using quantum Monte Carlo [PDF]
Physical Review B, 2014 We present a numerical scheme to reconstruct a subset of the entanglement spectrum of quantum many body systems using quantum Monte Carlo. The approach builds on the replica trick to evaluate particle number resolved traces of the first n of powers of a reduced density matrix.
Chung, Chia-Min +3 more
openaire +2 more sources
Experimental Joint Estimation of Phase and Phase Diffusion Via Deterministic Bell Measurements
Advanced Science, EarlyView.This work employs Bell measurement, a form of entangling measurement, to estimate both the phase and its fluctuations in an optical interferometer. By incorporating a novel quantum effect at the measurement stage, the proposed method achieves the ultimate precision limit and demonstrates the significant potential of entangling measurements in multi ...
Ben Wang +4 more
wiley +1 more source
Quantum Frenkel-Kontorova Model
, 2001 This paper gives a review of our recent work on the quantum Frenkel-Kontorova model. Using the squeezed state theory and the quantum Monte Carlo method, we have studied the effects of quantum fluctuations on the Aubry transition and the behavior of the ...
Aubry +32 more
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Quantum Monte Carlo tunneling from quantum chemistry to quantum annealing [PDF]
, 2017 Quantum Tunneling is ubiquitous across different fields, from quantum chemical reactions, and magnetic materials to quantum simulators and quantum computers.
G. Mazzola, V. Smelyanskiy, M. Troyer
semanticscholar +1 more source