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18 résultats avec le mot-clé: 'monte carlo study quantum spin systems square lattice'

MONTE CARLO STUDY OF QUANTUM SPIN SYSTEMS ON THE SQUARE LATTICE

Fujuki and Betts [14], and also Nishimori and Nakan- ishi [15] discussed the disappearance of long-range or- der in the study of quantum spin systems on the trian-

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1Introduction RapidmixingofpathintegralMonteCarlofor1DstoquasticHamiltonians

Path integral quantum Monte Carlo (PIMC) is a method for estimating thermal equilibrium properties of stoquastic quantum spin systems by sampling from a classical Gibbs

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2022
Quantum Monte Carlo

Uses diffusion Monte Carlo projections of wave functions to construct sequences of non-orthogonal basis sets which are injected into a diagonalisation method. Troubles with precision

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2021
Collapse of a polymer : evidence for tricritical behaviour in two dimensions

2014 Finite-size scaling of Monte Carlo generated order parameter (intrinsic density of monomers) and specific heat of square lattice polymers near the collapse

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Impurity-Induced Antiferromagnetic Domains in the Periodic Anderson Model A. Benali,

In the absence of randomness, Quantum Monte Carlo (QMC) has quantified this AF-singlet transition, both in the itinerant electron PAM,[24], and also in quantum spin Hamiltonians

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2022
Equation of State from Potts-Percolation Model of a Solid

Monte Carlo simulations for large q values (where the square lattice Potts transition is discontinuous) indicate that the discontinuity in the Potts energy translates into

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2021
HOPPING AND STATIC CORRELATIONS OF HIGHER ORDER IN A LATTICE GAS

For a square lattice with nearest-neighbour exclusion the relevant correlation functions are studied by Monte Carlo simulation and analytically by an extended Bethe-Peierls cluster

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Modèle d’Ising dilué

Abstract – The fourth order Binder cumulant U and the critical Binder cumulant U * of bond- diluted Ising model on a square lattice are studied using Monte

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MONTE CARLO STUDY OF LOW-TEMPERATURE PROPERTIES OF QUANTUM FERROMAGNETIC XY MODEL ON THE TRIANGULAR LATTICE

XY MODEL ON THE TRIANGULAR LATTICE Masako Takasu, Seiji Miyashita, Masuo Suzuki, Yasumasa Kanada.. To cite

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MONTE CARLO STUDY OF EPITAXIAL OVERLAYER WITH SUBSTANTIAL LATTICE MISMATCH

The atomic configuration of an epitaxial overlayer on a substrate with substantial lattice mismatch is studied by the Monte Carlo method.. Covering a wide range

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2021
Strong correlations and electron-phonon coupling in high-temperature superconductors: a quantum Monte Carlo study

Strong correlations and electron-phonon coupling in high- temperature superconductors: a quantum Monte Carlo study.. 4, CH-8803

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2021
Multireference quantum Monte Carlo study of the O4 molecule.

Note that a dramatic improvement in both thermochemical values is obtained when the truncated CASSCF expansions are used as multi- reference trial wave functions as compared with the

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Strongly correlated electrons : from two dimensions to heterostructures

Keywords: Condensed matter physics, Strongly correlated systems, Hub- bard model, Heterostructures, Quantum Monte Carlo, Phase transitions. Résumé: Les propriétés d'électrons en

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Damage spreading in Ising model with increased range of interaction

We study the nearest neighbour Ising model on a square lattice with the helical boundary condition using a single array for the whole lattice.. We update first the

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Estimation of the Mixed Logit  Likelihood Function by

Discrete choice modeling, mixed logit model, Monte Carlo, quasi-Monte Carlo, variance reduction, bias reduction, lattice rules, weighted discrepancy, ANOVA.. This work was

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FIRST VERSUS SECOND ORDER PHASE TRANSITION IN TYPE 1 ANTIFERROMAGNET ON THE FCC LATTICE

-We have used Monte Carlo simulations to investigate Ising systems on the FCC lattice with antiferromagnetic first neighbour interactions (J1) and ferromagnetic second

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Caution on emergent continuous symmetry: A Monte Carlo investigation of the transverse-field frustrated Ising model on the triangular and honeycomb lattices

Our large-scale Monte Carlo simulation confirms that the quantum phase transition (QPT) in the triangular lattice TFFIM indeed hosts an emergent O(2) symmetry, but that in the

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Improved quantum Monte Carlo simulations : from open to extended systems

Molecular properties by quantum Monte Carlo: An investigation on the role of the wave function ansatz and the basis set in the water molecule.. Algorithmic differentiation and

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2021

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