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For the large and chemically diverse GMTKN55 benchmark suite, we have studied the performance of density-corrected density functional theory (HF-DFT), compared to self-consistent DFT, for several pure and hybrid GGA and meta-GGA…

化学物理 · 物理学 2021-03-29 Golokesh Santra , Jan M. L. Martin

We present the self-consistent implementation of current-dependent (hybrid) meta generalized gradient approximation (mGGA) density functionals using London atomic orbitals. A previously proposed generalized kinetic energy density is…

Dynamic Voltage and Frequency Scaling is essential for enhancing energy efficiency in mobile platforms. However, traditional heuristic-based governors are increasingly inadequate for managing the complexity of heterogeneous System-on-Chip…

分布式、并行与集群计算 · 计算机科学 2025-09-30 Jinqi Yan , Fang He , Qianlong Sang , Bifeng Tong , Peng Sun , Yili Gong , Chuang Hu , Dazhao Cheng

For 6-DOF (degrees of freedom) interactive virtual acoustic environments (VAEs), the spatial rendering of diffuse late reverberation in addition to early (specular) reflections is important. In the interest of computational efficiency, the…

音频与语音处理 · 电气工程与系统科学 2021-11-30 Christoph Kirsch , Josef Poppitz , Torben Wendt , Steven van de Par , Stephan D. Ewert

In this work, we present the first derivation and implementation of analytic gradient methods for the computation of the atomic axial tensors (AATs) required for simulations of vibrational circular dichroism (VCD) spectra using…

化学物理 · 物理学 2025-11-03 Brendan M. Shumberger , T. Daniel Crawford

The vdW-DF-cx0 exchange-correlation hybrid design has a truly nonlocal correlation component and aims to facilitate concurrent descriptions of both covalent and non-covalent molecular interactions. The vdW-DF-cx0 design mixes a fixed ratio,…

化学物理 · 物理学 2018-06-13 Yang Jiao , Elsebeth Schröder , Per Hyldgaard

Stein Variational Gradient Descent (SVGD) is a widely used sampling algorithm that has been successfully applied in several areas of Machine Learning. SVGD operates by iteratively moving a set of interacting particles (which represent the…

机器学习 · 计算机科学 2024-06-24 Victor Priser , Pascal Bianchi , Adil Salim

The power spectrum and voxel intensity distribution (VID) are two summary statistics that can be applied to condense the information encoded in line-intensity maps. The information contained in both summary statistics is highly…

宇宙学与河外天体物理 · 物理学 2024-04-18 Vivian I. Sabla , José Luis Bernal , Gabriela Sato-Polito , Marc Kamionkowski

We assess the performance of nonempirical, truly nonlocal and semi-local functionals with regard to structural and thermal properties of $3d$, $4d$, and $5d$ non-magnetic transition metals. We focus on constraint-based functionals and…

材料科学 · 物理学 2021-01-14 Leili Gharaee , Paul Erhart , Per Hyldgaard

The squared Brunt-V\"{a}is\"{a}l\"{a} Frequency (BVF) is computed in terms of the moist entropy potential temperature recently defined in Marquet (2011). Both homogeneously saturated and non-saturated versions of $N^2$ (the squared BVF) are…

大气与海洋物理 · 物理学 2014-01-15 Pascal Marquet , Jean-François Geleyn

The van der Waals (vdW) density functional (vdW-DF) method [ROPP 78, 066501 (2015)] describes dispersion or vdW binding by tracking the effects of an electrodynamic coupling among pairs of electrons and their associated exchange-correlation…

强关联电子 · 物理学 2018-02-21 Yang Jiao , Elsebeth Schröder , Per Hyldgaard

Since the development of the nonlocal correlation functional vdW-DF, the family of van der Waals density functionals has grown to better describe a wide variety of systems. A recent generation of the vdW-DF family, vdW-DF3, featured a…

材料科学 · 物理学 2025-09-03 Trevor Jenkins , Kristian Berland , Timo Thonhauser

A simple and computationally efficient scheme to calculate approximate imaginary-frequency dependent polarizability, hence asymptotic van der Waals coefficient, within density functional theory is proposed. The dynamical dipolar…

材料科学 · 物理学 2009-04-20 Huy-Viet Nguyen , Stefano de Gironcoli

The vibrational dynamics of adsorbate molecules in single-molecule junctions depend critically on the geometric structure and electronic interactions between molecule and substrate. Vibrations, excited mechanochemically or by external…

介观与纳米尺度物理 · 物理学 2025-09-17 Lukas Hörmann , Reinhard J. Maurer

The fractional quantum Hall effect remains a captivating area in condensed matter physics, characterized by strongly correlated topological order, which manifests as fractionalized excitations and anyonic statistics. Numerical simulations,…

强关联电子 · 物理学 2025-10-27 Yi Yang , Yayun Hu , Zi-Xiang Hu

The alternative separation of exchange and correlation energies proposed by Toulouse et al. [Theor. Chem. Acc. 114, 305 (2005)] is explored in the context of multi-configuration range-separated density-functional theory. The new…

Density functional calculations on atoms are often used for determining accurate initial guesses as well as generating various types of pseudopotential approximations and efficient atomic-orbital basis sets for polyatomic calculations. To…

计算物理 · 物理学 2023-10-30 Susi Lehtola

A two-parameter extension of the density-scaled double hybrid approach of Sharkas et al. [J. Chem. Phys. 134, 064113 (2011)] is presented. It is based on the explicit treatment of a fraction of multideterminantal exact exchange. The…

化学物理 · 物理学 2012-01-12 Emmanuel Fromager

Long-range exchange and correlation effects, responsible for the failure of currently used approximate density functionals in describing van der Waals forces, are taken into account explicitly after a separation of the electron-electron…

材料科学 · 物理学 2009-11-11 Janos G. Angyan , Iann C. Gerber , Andreas Savin , Julien Toulouse

We present a new video compression framework (ViSTRA2) which exploits adaptation of spatial resolution and effective bit depth, down-sampling these parameters at the encoder based on perceptual criteria, and up-sampling at the decoder using…

图像与视频处理 · 电气工程与系统科学 2021-06-22 Fan Zhang , Mariana Afonso , David R. Bull