PySAGES: flexible, advanced sampling methods accelerated with GPUsMolecular simulations are an important tool for research in physics, chemistry, and biology. The capabilities of simulations can be greatly expanded by providing access to advanced sampling methods…Pablo F. Zubieta Rico, Ludwig Schneider, Gustavo R. Pérez-Lemus et al.·Jan 12, 2023SaveLearn
PINN for Dynamical Partial Differential Equations is Not Training Deeper Networks Rather Learning Advection and Time VarianceThe concepts and techniques of physics-informed neural networks (PINNs) is studied and limitations are identified to make it efficient to approximate dynamical equations. Potential working research…Siddharth Rout·Jan 12, 2023SaveLearn
Closely estimating the entropy of sparse graph modelsWe introduce an algorithm for estimating the entropy of pairwise, probabilistic graph models by leveraging bridges between social communities and an accurate entropy estimator on sparse samples. We…Edward D. Lee·Jan 12, 2023SaveLearn
Subspace recursive Fermi-operator expansion strategies for large-scale DFT eigenvalue problems on HPC architecturesQuantum mechanical calculations for material modelling using Kohn-Sham density functional theory (DFT) involve the solution of a nonlinear eigenvalue problem for N smallest eigenvector-eigenvalue…Sameer Khadatkar, Phani Motamarri·Jan 11, 2023SaveLearn
A Fully Quantum-Mechanical Treatment for KaoliniteNeural network potentials for kaolinite minerals have been fitted to data extracted from density functional theory calculation that were performed using the revPBE + D3 and revPBE + vdW functionals.…Sam Shepherd, Gareth A. Tribello, David M. Wilkins·Jan 11, 2023SaveLearn
WKB Across Caustics: The Screened-WKB MethodWe present a new methodology, based on the WKB approximation and Fast Fourier Transforms, for the evaluation of wave propagation through inhomogeneous media. This method can accurately resolve fields…Oscar P. Bruno, Martin D. Maas·Jan 10, 2023SaveLearn
Band unfolding with a general transformation matrix: from code implementation to interpretation of photoemission spectraUnfolding of a supercell band structure into a primitive Brillouin zone is important for understanding implications of structural distortions, disorder, defects, solid solutions on materials…Oleg Rubel, Jean-Baptiste Moussy, Paul Foulquier et al.·Jan 6, 2023SaveLearn
Physics informed neural network for charged particles surrounded by conductive boundariesIn this paper, we developed a new PINN-based model to predict the potential of point-charged particles surrounded by conductive walls. As a result of the proposed physics-informed neural network…Fatemeh Hafezianzade, Morad Biagooi, SeyedEhsan Nedaaee Oskoee·Jan 5, 2023SaveLearn
An extended plane wave framework for the electronic structure calculations of twisted bilayer material systemsIn this paper, we propose an extended plane wave framework to make the electronic structure calculations of the twisted bilayer 2D material systems practically feasible. Based on the foundation in…Xiaoying Dai, Aihui Zhou, Yuzhi Zhou·Jan 4, 2023SaveLearn
The antiferromagnetic phase transition in the layered Cu0.15Fe0.85PS3 semiconductor: experiment and DFT modellingThe experimental studies of the paramagnetic-antiferromagnetic phase transition through M\"ossbauer spectroscopy and measurements of temperature and field dependencies of magnetic susceptibility in…V. Pashchenko, O. Bludov, D. Baltrunas et al.·Jan 3, 2023SaveLearn
Performance investigation of supercapacitors with PEO-based gel polymer & ionic liquid electrolytes: Molecular Dynamics SimulationDue to the importance of using supercapacitors in electronic storage devices, improving their efficiency is one of the topics that has attracted the attention of many researchers. Choosing the proper…Nasrin Eyvazi, Davood Abbaszadeh, Morad Biagooi et al.·Jan 3, 2023SaveLearn
Yade DocumentationYade is an extensible open-source framework for discrete numerical models, focused on the Discrete Element Method. The computation parts are written in c++ using a flexible object model and allowing…Vaclav Smilauer, Vasileios Angelidakis, Emanuele Catalano et al.·Jan 2, 2023SaveLearn
Genetic-tunneling driven energy optimizer for spin systemsA long-standing and difficult problem in, e.g., condensed matter physics is how to find the ground state of a complex many-body system where the potential energy surface has a large number of local…Qichen Xu, Zhuanglin Shen, Manuel Pereiro et al.·Dec 31, 2022SaveLearn
Origin of performance degradation in high-delithiation LixCoO2: insights from direct atomic simulations using global neural network potentialsLixCoO2 based batteries have serious capacity degradation and safety issues when cycling at high-delithiation states but full and consistent mechanisms are still poorly understood. Herein, a…Pan Zhang, Cheng Shang, Zhipan Liu et al.·Dec 30, 2022SaveLearn
Novel Approach to Structural Relaxation of Materials in Optically Excited StatesWe present a first-principles method for relaxing a material's geometry in an optically excited state. This method, based on the Bethe-Salpeter equation, consists of solving coupled equations for…Mao Yang, Claudia Draxl·Dec 27, 2022SaveLearn
Notes on the Fast Multipole MethodCoulomb interactions of point charges can be calculated in O(N) computation using the fast multipole method and direct calculations between charges nearby. It reduces computational cost…Yasuhiro Kajima·Dec 26, 2022SaveLearn
Tunable Quantum Anomalous Hall Effects in Ferromagnetic van der Waals HeterostructuresThe quantum anomalous Hall effect (QAHE) has unique advantages in topotronic applications, but it is still challenging to realize the QAHE with tunable magnetic and topological properties for…Feng Xue, Yusheng Hou, Zhe Wang et al.·Dec 25, 2022SaveLearn
Ising Model Partition Function Computation as a Weighted Counting ProblemWhile the Ising model remains essential to understand physical phenomena, its natural connection to combinatorial reasoning makes it also one of the best models to probe complex systems in science…Shaan A. Nagy, Roger Paredes, Jeffrey M. Dudek et al.·Dec 24, 2022SaveLearn
Numerical Evolution from the HamiltonianWe propose a numerical method for approximate calculations of the time evolution of point particle systems given only the system's Hamiltonian function and initial conditions. The method both…José M. L. Amoreira, Luís J. M. Amoreira·Dec 24, 2022SaveLearn
Combining Stochastic Parameterized Reduced-Order Models with Machine Learning for Data Assimilation and Uncertainty Quantification with Partial ObservationsA hybrid data assimilation algorithm is developed for complex dynamical systems with partial observations. The method starts with applying a spectral decomposition to the entire spatiotemporal…Changhong Mou, Leslie M. Smith, Nan Chen·Dec 23, 2022SaveLearn
The dissipative Generalized Hydrodynamic equations and their numerical solution"Generalized Hydrodynamics" (GHD) stands for a model that describes one-dimensional integrable systems in quantum physics, such as ultra-cold atoms or spin chains. Mathematically, GHD…Frederik Møller, Nicolas Besse, Igor E. Mazets et al.·Dec 23, 2022SaveLearn
Finite Element Methods for Linear Maxwell's Equations in Bianisotropic Media Permitting Polarization Fields and Magnetic CurrentsWe review Maxwell's equations and constitutive relations for 3D bianisotropic media in a generalized form: we consider all four variables and allow for nonzero polarization or magnetization, and also…Tharindu Fernando, Martin Licht, Michael Holst·Dec 22, 2022SaveLearn
Modeling Heat Conduction with Dual-Dissipative Variables: A Mechanism-Data Fusion MethodMany macroscopic non-Fourier heat conduction models have been developed in the past decades based on Chapman-Enskog, Hermite or other small perturbation expansion methods. These macroscopic models…Leheng Chen, Chuang Zhang, Jin Zhao·Dec 22, 2022SaveLearn
Atomic, electronic, and superconducting properties of Zr2Ir compoundWe have investigated the structural, electronic, mechanical, phononic, and superconducting properties of the Zr2Ir compound with a body-centered tetragonal crystal structure using first-principles…C. Tayran, M. Çakmak·Dec 20, 2022SaveLearn
Nonlinear polarization effect of functionalized graphene quantum dotsGraphene quantum dots (GQDs) are nanoscale structures of graphene with quantum properties and edge effects that give photoluminescence properties. The effect of quantum confinement and differences in…Setianto, I Made Joni·Dec 20, 2022SaveLearn