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Mixing single and triple fermions an exact killing operator of the Coupled Cluster Doubles (CCD) wave function with good symmetry was found in \cite{Tohy13}. Using these operators with the equation of motion (EOM) method the so-called…

核理论 · 物理学 2020-10-26 Mohsen Jemaï , Peter Schuck

We present a method to integrate predictions from a theoretical model of a reaction with three bodies in the final state over the region of phase space covered by a given experiment. The method takes into account the true experimental…

We developed a novel pathway to highly efficiently synthesize the [60]Fullerene (C$_{60}$)-Cyclodextrin (CD) complex, which is termed as solvent-induced reversible recognition. Three kinds of typical complexes, namely,…

材料科学 · 物理学 2022-01-14 Guang-Zhong Yin , De-Yi Wang

This article continues the research initiated in [17]. We derive explicit formulae for the leading order profiles of eleven types of stationary solutions to a one-dimensional two-layer thin-film liquid model considered with an…

偏微分方程分析 · 数学 2024-07-19 Georgy Kitavtsev

In this study, the multiple solutions of Nonlinear Coupled Constitutive Relation (NCCR) model are firstly observed and a way for identifying the physical solution is proposed. The NCCR model proposed by Myong is constructed from the…

计算物理 · 物理学 2022-11-23 Junzhe Cao , Sha Liu , Chengwen Zhong , Congshan Zhuo , Kun Xu

A block-correlated coupled cluster (BCCC) method based on the generalized valence bond (GVB) wave function (GVB-BCCC in short) is proposed and implemented at the ab initio level, which represents an attractive multireference electronic…

化学物理 · 物理学 2023-03-16 Qingchun Wang , Mingzhou Duan , Enhua Xu , Jingxiang Zou , Shuhua Li

A new perturbative approach to canonical equation-of-motion coupled-cluster theory is presented using coupled-cluster perturbation theory. A second-order M{\o}ller-Plesset partitioning of the Hamiltonian is used to obtain the well known…

化学物理 · 物理学 2015-07-09 Jason N. Byrd , Varun Rishi , Ajith Perera , Rodney J. Bartlett

We consider a diffuse interface model describing a ternary system constituted by a conductive diblock copolymer and a homopolymer acting as solvent. The resulting dynamics is modeled by two Cahn--Hilliard--Oono equations for the copolymer…

偏微分方程分析 · 数学 2024-11-07 Helmut Abels , Andrea Di Primio , Harald Garcke

An implementation of the coupled-cluster single- and double excitations (CCSD) method on two-dimensional quantum dots is presented. Advantages and limitations are studied through comparison with other high accuracy approaches for two to…

介观与纳米尺度物理 · 物理学 2013-05-30 Erik Waltersson , Eva Lindroth

To model the propagation of large water waves and associated loads applied to offshore structures, scientists and engineers have a need of fast and accurate models. A wide range of models have been developped in order to predict wave-fields…

计算物理 · 物理学 2018-05-10 Fabien Robaux , Michel Benoit

The double electron attachment (DEA) and double ionization potential (DIP) equation-of-motion coupled-cluster (EOMCC) methods including up to 4-particle-2-hole (4$p$-2$h$) and 4-hole-2-particle (4$h$-2$p$) excitations on top of…

化学物理 · 物理学 2026-05-21 Jun Shen , Karthik Gururangan , Piotr Piecuch

This paper deals with investigating numerical methods for solving coupled system of nonlinear parabolic problems. We utilize block monotone iterative methods based on Jacobi and Gauss--Seidel methods to solve difference schemes which…

数值分析 · 数学 2019-05-10 Mohamed Al-Sultani

We present our computational implementation of the equation-of-motion (EOM) coupled-cluster (CC) singles, doubles, and triples (SDT) method for computing doubly ionized (DIP) and two-electron attached (DEA) states within Q-CHEM. These…

化学物理 · 物理学 2025-01-14 Manisha , Prashant Uday Manohar , Anna I Krylov

Ground states and dynamical properties of dipolar Bose-Einstein condensate are analyzed based on the Gross-Pitaevskii-Poisson system (GPPS) and its dimension reduction models under anisotropic confining potential. We begin with the…

数学物理 · 物理学 2012-12-21 Weizhu Bao , Naoufel Ben Abdallah , Yongyong Cai

We introduce a new type of models for two-component systems in one dimension subject to exact solutions by Bethe ansatz, where the interspecies interactions are tunable via Feshbach resonant interactions. The applicability of Bethe ansatz…

量子气体 · 物理学 2019-02-20 Tianhao Ren , Igor Aleiner

We study non-BPS black hole solutions to ungauged supergravity with 8 supercharges coupled to vector multiplets in four and five dimensions. We identify a large class of five dimensional non-BPS solutions, which we call "almost BPS", that…

高能物理 - 理论 · 物理学 2009-05-20 Kevin Goldstein , Stefanos Katmadas

We report the development of a parallel FORTRAN code, RCCPAC, to solve the relativistic coupled-cluster equations for closed-shell and one-valence atoms and ions. The parallelization is implemented through the use of message passing…

原子物理 · 物理学 2017-02-08 B. K. Mani , Siddhartha Chattopadhyay , D. Angom

Constant potential method molecular dynamics simulation (CPM MD) enables the accurate modelling of atomistic electrode charges when studying the electrode-electrolyte interface at the nanoscale. Here we extend the theoretical framework of…

材料科学 · 物理学 2023-05-26 Shern Ren Tee , Debra J. Searles

The double ionization potential (DIP) equation-of-motion (EOM) coupled-cluster (CC) method with 4-hole--2-particle (4$h$-2$p$) excitations on top of the CC with singles, doubles, and triples calculation, abbreviated as…

In the context of modeling of cell signaling pathways, a relevant step is finding steady-state solutions for ODE systems that describe the kinetics of a set of chemical reactions, especially sets composed of zero, first, and second-order…

计算复杂性 · 计算机科学 2018-04-11 Marcelo S. Reis