Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Alexander E. Doran"'
Publikováno v:
The Journal of Physical Chemistry A. 125:7344-7351
A scalable stochastic algorithm is presented that can evaluate explicitly correlated (F12) second-order many-body perturbation (MP2) energies of weak, noncovalent, intermolecular interactions. It first transforms the formulas of the MP2 and F12 energ
Publikováno v:
The journal of physical chemistry. A. 125(33)
A scalable stochastic algorithm is presented that can evaluate explicitly correlated (F12) second-order many-body perturbation (MP2) energies of weak, noncovalent, intermolecular interactions. It first transforms the formulas of the MP2 and F12 energ
Autor:
Alexander E. Doran, So Hirata
Publikováno v:
Journal of Chemical Theory and Computation. 15:6097-6110
We fully develop the Monte Carlo many-body Green's function (MC-GF) method with the following enhancements: (1) The truncation order of the perturbation expansion of the Dyson self-energy is raised from the second order (MC-GF2) to the third order (M
Autor:
Alexander E. Doran, So Hirata
Publikováno v:
The Journal of chemical physics. 153(10)
In the Monte Carlo many-body perturbation (MC-MP) method, the conventional correlation-correction formula, which is a long sum of products of low-dimensional integrals, is first recast into a short sum of high-dimensional integrals over electron-pair
Autor:
So Hirata, Alexander E. Doran
Publikováno v:
Journal of Chemical Theory and Computation. 12:4821-4832
In the Monte Carlo second-order many-body perturbation (MC-MP2) method, the long sum-of-product matrix expression of the MP2 energy, whose literal evaluation may be poorly scalable, is recast into a single high-dimensional integral of functions of el
Autor:
Alexander E. Doran, So Hirata
Publikováno v:
The Journal of Chemical Physics. 153:094108
The use of many control variates is proposed as a method to accelerate the second- and third-order Monte Carlo (MC) many-body perturbation (MC-MP2 and MC-MP3) calculations. A control variate is an exactly integrable function that is strongly correlat
Publikováno v:
The Journal of chemical physics. 149(17)
A highly scalable stochastic algorithm is proposed and implemented for computing the basis-set-incompleteness correction to the diagonal, frequency-independent self-energy of the second-order many-body Green’s function (GF2) theory within the expli
Publikováno v:
The Journal of Chemical Physics. 147:044108
A thorough analytical and numerical characterization of the whole perturbation series of one-particle many-body Green’s function (MBGF) theory is presented in a pedagogical manner. Three distinct but equivalent algebraic (first-quantized) recursive
Publikováno v:
The Journal of Chemical Physics. 145:154115
A stochastic algorithm is proposed and implemented that computes a basis-set-incompleteness (F12) correction to an ab initio second-order many-body perturbation energy as a short sum of 6- to 15-dimensional integrals of Gaussian-type orbitals, an exp