Polynomial chaos expansion of random coefficients and the solution of stochastic partial differential equations in the tensor train format
We apply the tensor train (TT) decomposition to construct the tensor product polynomial
chaos expansion (PCE) of a random field, to solve the stochastic elliptic diffusion PDE with …
chaos expansion (PCE) of a random field, to solve the stochastic elliptic diffusion PDE with …
Tensor numerical methods in quantum chemistry: from Hartree–Fock to excitation energies
V Khoromskaia, BN Khoromskij - Physical Chemistry Chemical Physics, 2015 - pubs.rsc.org
We resume the recent successes of the grid-based tensor numerical methods and discuss
their prospects in real-space electronic structure calculations. These methods, based on the …
their prospects in real-space electronic structure calculations. These methods, based on the …
Tensor numerical methods for multidimensional PDEs: theoretical analysis and initial applications
BN Khoromskij - ESAIM: Proceedings and Surveys, 2015 - esaim-proc.org
We present a brief survey on the modern tensor numerical methods for multidimensional
stationary and time-dependent partial differential equations (PDEs). The guiding principle of …
stationary and time-dependent partial differential equations (PDEs). The guiding principle of …
A tensor-train accelerated solver for integral equations in complex geometries
We present a framework using the Quantized Tensor Train (qtt) decomposition to accurately
and efficiently solve volume and boundary integral equations in three dimensions. We …
and efficiently solve volume and boundary integral equations in three dimensions. We …
Stability of low-rank tensor representations and structured multilevel preconditioning for elliptic PDEs
M Bachmayr, V Kazeev - Foundations of Computational Mathematics, 2020 - Springer
Folding grid value vectors of size 2^ L 2 L into L th-order tensors of mode size 2 * ⋯ * 2 2×⋯×
2, combined with low-rank representation in the tensor train format, has been shown to result …
2, combined with low-rank representation in the tensor train format, has been shown to result …
Grid-based lattice summation of electrostatic potentials by assembled rank-structured tensor approximation
V Khoromskaia, BN Khoromskij - Computer Physics Communications, 2014 - Elsevier
Our recent method for low-rank tensor representation of sums of the arbitrarily positioned
electrostatic potentials discretized on a 3D Cartesian grid reduces the 3D tensor summation …
electrostatic potentials discretized on a 3D Cartesian grid reduces the 3D tensor summation …
Tensor-decomposition techniques for ab initio nuclear structure calculations: From chiral nuclear potentials to ground-state energies
Background: The computational resources needed to generate the ab initio solution of the
nuclear many-body problem for increasing mass number and/or accuracy necessitates …
nuclear many-body problem for increasing mass number and/or accuracy necessitates …
Fast iterative solution of the Bethe–Salpeter eigenvalue problem using low-rank and QTT tensor approximation
In this paper, we propose and study two approaches to approximate the solution of the
Bethe–Salpeter equation (BSE) by using structured iterative eigenvalue solvers. Both …
Bethe–Salpeter equation (BSE) by using structured iterative eigenvalue solvers. Both …
Efficient computation of the hartree–fock exchange in real-space with projection operators
We describe an efficient projection-based real-space implementation of the nonlocal single-
determinant exchange operator. Through a matrix representation of the projected operator …
determinant exchange operator. Through a matrix representation of the projected operator …
Range-separated tensor format for many-particle modeling
We introduce and analyze the new range-separated (RS) canonical/Tucker tensor format
which aims for numerical modeling of the 3D long-range interaction potentials in …
which aims for numerical modeling of the 3D long-range interaction potentials in …