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Rearrangement mechanisms of the water dimer and the cage form of the water hexamer are examined theoretically with particular reference to tunneling splittings and spectroscopy. The three lowest barrier rearrangements of the water dimer are…

原子与分子团簇 · 物理学 2015-06-26 David J. Wales

Transformers have recently gained attention in the computer vision domain due to their ability to model long-range dependencies. However, the self-attention mechanism, which is the core part of the Transformer model, usually suffers from…

计算机视觉与模式识别 · 计算机科学 2023-07-28 Reza Azad , René Arimond , Ehsan Khodapanah Aghdam , Amirhossein Kazerouni , Dorit Merhof

Interacting lattice Hamiltonians at high temperature generically give rise to energy transport governed by the classical diffusion equation; however, predicting the rate of diffusion requires numerical simulation of the microscopic quantum…

强关联电子 · 物理学 2023-12-04 En-Jui Kuo , Brayden Ware , Peter Lunts , Mohammad Hafezi , Christopher David White

The double proton transfer (DPT) reaction in hydrated formic acid dimer (FAD) is investigated at molecular-level detail. For this, a global and reactive machine learned (ML) potential energy surface (PES) is developed to run extensive (more…

化学物理 · 物理学 2022-06-22 Kai Töpfer , Silvan Käser , Markus Meuwly

The dynamics of water molecules plays a vital role in understanding water. We combined computer simulation and deep learning to study the dynamics of H-bonds between water molecules. Based on ab initio molecular dynamics simulations and a…

无序系统与神经网络 · 物理学 2021-10-19 Jie Huang , Gang Huang , Shiben Li

We have simulated structure and dynamics of water in the grooves of a DNA duplex using moleculear dynamics simulations. We find signatures of a dynamical transition in both translational and orientational dynamics of water molecules in both…

软凝聚态物质 · 物理学 2008-09-23 Debasmita Biswal , Biman Jana , Subrata Pal , Biman Bagchi

Transition metal dichalcogenide (TMD) bilayers are a new class of tunable moir\'e systems attracting interest as quantum simulators of strongly-interacting electrons in two dimensions. In particular, recent theory predicts that the…

强关联电子 · 物理学 2021-01-01 Kevin Slagle , Liang Fu

The Sabatier principle establishes a fundamental trade-off in heterogeneous electrocatalysis.In the hydrogen evolution reaction (HER), this trade-off is manifested by the coupling of Volmer step, which requires strong hydrogen adsorption,…

材料科学 · 物理学 2025-10-14 Zi-Xuan Yang , Lei Li , Tao Huang , Hui Wan , X. S. Wang , Gui-Fang Huang , Wangyu Hu , Wei-Qing Huang

Current approaches using sequential networks have shown promise in estimating field variables for dynamical systems, but they are often limited by high rollout errors. The unresolved issue of rollout error accumulation results in unreliable…

机器学习 · 计算机科学 2024-10-31 Parsa Esmati , Amirhossein Dadashzadeh , Vahid Goodarzi , Nicolas Larrosa , Nicolò Grilli

We investigate the charge transfer characteristics of one and two excess charges in a DNA base-pair dimer using a model Hamiltonian approach. The electron part comprises diagonal and off-diagonal Coulomb matrix elements such a correlated…

强关联电子 · 物理学 2015-05-14 Sabine Tornow , Ralf Bulla , Frithjof B. Anders , Gertrud Zwicknagl

The penetration of distributed renewable energy (DRE) greatly raises the risk of distribution network operation such as peak shaving and voltage stability. Battery energy storage (BES) has been widely accepted as the most potential…

最优化与控制 · 数学 2017-07-03 Chenghui Tang , Jian Xu , Yuanzhang Sun , Siyang Liao , Deping Ke , Xiong Li

Using artificial dissipation to tame entanglement growth, we chart the emergence of diffusion in a generic interacting lattice model for varying U(1) charge densities. We follow the crossover from ballistic to diffusive transport above a…

强关联电子 · 物理学 2026-04-29 N. S. Srivatsa , Oliver Lunt , Tibor Rakovszky , Curt von Keyserlingk

This paper examines a fluid antenna (FA)-assisted simultaneous wireless information and power transfer (SWIPT) system. Unlike traditional SWIPT systems with fixed-position antennas (FPAs), our FA-assisted system enables dynamic…

信号处理 · 电气工程与系统科学 2024-07-25 Liaoshi Zhou , Junteng Yao , Tuo Wu , Ming Jin , Chau Yuen , Fumiyuki Adachi

We use first-principles calculations based on density functional theory to investigate the magnetic exchange interaction of Fe clusters on Rh(111) and Ru(0001). We consider dimers, trimers, tetramers, and pentamers of different shape in fcc…

介观与纳米尺度物理 · 物理学 2013-12-13 F. Otte , P. Ferriani , S. Heinze

Many studies have revealed that confined water chain flipping is closely related to the spatial size and even quantum effects of the confinement environment. Here, we show that these are not the only factors that affect the flipping process…

生物物理 · 物理学 2021-07-07 Le Jin , Xinrui Yang , Yu Zhu , Zhiyuan Zhang , Rui Liu , Zhigang Wang

We introduce the dissipation-assisted operator evolution (DAOE) method for calculating transport properties of strongly interacting lattice systems in the high temperature regime. DAOE is based on evolving observables in the Heisenberg…

强关联电子 · 物理学 2020-04-14 Tibor Rakovszky , C. W. von Keyserlingk , Frank Pollmann

Up to now, for the conventional exchange bias (EB) systems there has been one pinning phase and one pinned phase, and the pinning and pinned phases are inherent to the material and do not mutually transform into each other. Interestingly,…

材料科学 · 物理学 2019-05-15 P. Song , L. Ma , G. K. Li , C. M. Zhen , C. Wang , W. H. Wang , E. K. Liu , J. L. Chen , G. H. Wu , Y. H. Xia , J. Zhang , C. M. Xie , H. Li , D. L. Hou

The Fast Fourier Transform (FFT) correlation approach to protein-protein docking can evaluate the energies of billions of docked conformations on a grid if the energy is described in the form of a correlation function. Here, this…

生物大分子 · 定量生物学 2007-05-23 D. Kozakov , R. Brenke , S. Comeau , S. Vajda

We employ Molecular Dynamics (MD) and Time-Dependent Density Functional Theory (TDDFT) to explore the fluorescence of Hydrogen-bonded dimer and trimer structures of Cyclic FF (Phe- Phe) molecules. We show that in some of these…

化学物理 · 物理学 2019-06-19 Sijo K. Joseph , Natalia Kuritz , Eldad Yahel , Nadezda Lapshina , Gil Rosenman , Amir Natan

Quantum kinetically constrained models can exhibit a wealth of dynamical phenomena ranging from anomalous transport to Hilbert-space fragmentation (HSF). We study a class of one-dimensional particle number conserving systems where particle…

统计力学 · 物理学 2023-11-02 Cheng Wang , Zhi-Cheng Yang
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