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A self-consistent method for calculating electron transport through a molecular device is proposed. It is based on density functional theory electronic structure calculations under periodic boundary conditions and implemented in the…

介观与纳米尺度物理 · 物理学 2007-05-23 San-Huang Ke , Harold U. Baranger , Weitao Yang

In this paper, a new measurement to compare two large-scale graphs based on the theory of quantum probability is proposed. An explicit form for the spectral distribution of the corresponding adjacency matrix of a graph is established. Our…

离散数学 · 计算机科学 2018-07-03 Hayoung Choi , Hosoo Lee , Yifei Shen , Yuanming Shi

We investigate the interplay of quantum interference effects and electronic-vibrational coupling in electron transport through single-molecule junctions, employing a nonequilibrium Green's function approach. Our findings show that inelastic…

介观与纳米尺度物理 · 物理学 2013-02-18 R. Härtle , M. Butzin , M. Thoss

In chemical graph theory, topological indices are widely used as numerical descriptors for establishing quantitative structure-property relationships (QSPR) and quantitative structure-activity relationships (QSAR). These indices…

化学物理 · 物理学 2025-11-05 U. Vijaya Chandra Kumar , H. M. Nagesh , Narahari N

In solid state physics, the electron-phonon interaction (EPI) is central to many phenomena. The theory of the renormalization of electronic properties due to EPIs became well established with the theory of Allen-Heine-Cardona, usually…

材料科学 · 物理学 2022-06-22 Jean Paul Nery , Francesco Mauri

We propose an algorithm for determining the zeros of the electric conductivity in large molecular nanonstructures such as graphene sheets. To this end, we employ the inverse graph method, whereby non-zeros of the Green's functions are…

介观与纳米尺度物理 · 物理学 2025-05-21 Marian Nita , Mugurel Tolea , Catalina Marinescu

The dipole moment is a physical quantity indicating the polarity of a molecule and is determined by reflecting the electrical properties of constituent atoms and the geometric properties of the molecule. Most embeddings used to represent…

机器学习 · 计算机科学 2022-06-28 Yang Jeong Park

A finite element approach to the elastic flow of a curve coupled with a diffusion equation on the curve is analysed. Considering the graph case, the problem is weakly formulated and approximated with continuous linear finite elements, which…

数值分析 · 数学 2017-07-28 Paola Pozzi , Björn Stinner

Access to magnetic excitation spectra of single atoms deposited on surfaces is nowadays possible by means of low-temperature inelastic scanning tunneling spectroscopy. We present a first-principles method for the calculation of inelastic…

强关联电子 · 物理学 2015-06-22 Benedikt Schweflinghaus , Manuel dos Santos Dias , Antonio T. Costa , Samir Lounis

A new variational method for studying the equilibrium states of an interacting particles system has been proposed. The statistical description of the system is realized by means of a density matrix. This method is used for description of…

综合物理 · 物理学 2014-12-19 Boris Bondarev

Graph inference plays an essential role in machine learning, pattern recognition, and classification. Signal processing based approaches in literature generally assume some variational property of the observed data on the graph. We make a…

信息论 · 计算机科学 2020-08-24 B. Subbareddy , Aditya Siripuram , Jingxin Zhang

Prediction of solubility has been a complex and challenging physiochemical problem that has tremendous implications in the chemical and pharmaceutical industry. Recent advancements in machine learning methods have provided great scope for…

无序系统与神经网络 · 物理学 2024-02-20 Vansh Ramani , Tarak Karmakar

We note that most existing approaches for molecular graph generation fail to guarantee the intrinsic property of permutation invariance, resulting in unexpected bias in generative models. In this work, we propose GraphEBM to generate…

机器学习 · 计算机科学 2021-04-13 Meng Liu , Keqiang Yan , Bora Oztekin , Shuiwang Ji

We study electron transport properties of some molecular wires and a unconventional disordered thin film within the tight-binding framework using Green's function technique. We show that electron transport is significantly affected by…

介观与纳米尺度物理 · 物理学 2009-06-29 Santanu K. Maiti

In this perspective article, we present a multidisciplinary approach for characterizing protein structure networks. We first place our approach in its historical context and describe the manner in which it synthesizes concepts from quantum…

分子网络 · 定量生物学 2019-12-30 Vasundhara Gadiyaram , Smitha Vishveshwara , Saraswathi Vishveshwara

In this paper, we demonstrate a useful interaction between the theory of clique partitions, edge clique covers of a graph, and the spectra of graphs. Using a clique partition and an edge clique cover of a graph we introduce the notion of a…

组合数学 · 数学 2023-07-20 Shaun Fallat , Seyed Ahmad Mojallal

Significant effort in applied quantum computing has been devoted to the problem of ground state energy estimation for molecules and materials. Yet, for many applications of practical value, additional properties of the ground state must be…

量子物理 · 物理学 2022-07-13 Ruizhe Zhang , Guoming Wang , Peter Johnson

We outline a strategy to compute deeply inelastic scattering structure functions using a hybrid quantum computer. Our approach takes advantage of the representation of the fermion determinant in the QCD path integral as a quantum mechanical…

高能物理 - 理论 · 物理学 2020-07-22 Niklas Mueller , Andrey Tarasov , Raju Venugopalan

We apply the gaussian variational method (GVM) to study the equilibrium statistical mechanics of the two related systems: (i) classical elastic manifolds, such as flux lattices, in presence of columnar disorder correlated along the $\tau$…

凝聚态物理 · 物理学 2009-10-28 Thierry Giamarchi , Pierre Le Doussal

Dielectric interfaces are crucial to the behavior of charged membranes, from graphene to synthetic and biological lipid bilayers. Understanding electrolyte behavior near these interfaces remains a challenge, especially in the case of rough…

软凝聚态物质 · 物理学 2024-04-03 Nicholas Pogharian , Alexandre P. dos Santos , Ali Ehlen , Monica Olvera de la Cruz