منابع مشابه
Permutation sampling in Path Integral Monte Carlo
Abstract A simple algorithm is described to sample permutations of identical particles in Path Integral Monte Carlo (PIMC) simulations of continuum many-body systems. The sampling strategy illustrated here is fairly general, and can be easily incorporated in any PIMC implementation based on the staging algorithm. Although it is similar in spirit to an existing prescription, it differs from it i...
متن کاملVortices and 2D Bosons: A Path-Integral Monte Carlo Study
The vortex system in a high-Tc superconductor has been studied numerically using the mapping to 2D bosons and the Path Integral Monte Carlo method. We find a single first-order transition from an Abrikosov lattice to an entangled vortex liquid. The transition is characterized by an entropy jump of ∆S ≈ 0.27kB per degree of freedom and a Lindemann number cL ≈ 0.29. At low fields, λ ≈ a0, the den...
متن کاملTwo-dimensional H2 clusters: A path-integral Monte Carlo study
The possibility of maintaining H2 in a fluid state at temperatures low enough to produce a superfluid has recently attracted considerable attention. Unfortunately, the H2-H2 interaction is too strong to allow molecular hydrogen to be a liquid below its bulk triple point of 14 K. One way to attain a liquid ground state is to reduce the effective attraction between the H2 molecule or alternativel...
متن کاملPath Integral Monte Carlo Approach to the U ( 1 ) Lattice Gauge Theory in ( 2 + 1 ) Dimensions
Path Integral Monte Carlo simulations have been performed for U(1) lattice gauge theory in (2+1) dimensions on anisotropic lattices. We extract the static quark potential, the string tension and the low-lying “glueball” spectrum. The Euclidean string tension and mass gap decrease exponentially at weak coupling in excellent agreement with the predictions of Polyakov and Göpfert and Mack, but the...
متن کاملPath integral Monte Carlo calculation of electronic forces
We describe a method to evaluate electronic forces by path integral Monte Carlo ~PIMC! calculation. Electronic correlations, as well as thermal effects, are included naturally in this method. For fermions, a restricted approach is used to avoid the ‘‘sign’’ problem. The PIMC force estimator is local and has a finite variance. We applied this method to determine the bond length of H2 and the che...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2014
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.89.042124