Hybrid grid/basis set discretizations of the Schrödinger equation
Journal Article
·
· Journal of Chemical Physics
- Univ. of California, Irvine, CA (United States); University of California, Irvine
We present a new kind of basis function for discretizing the Schrödinger equation in electronic structure calculations, called a gausslet, which has wavelet-like features but is composed of a sum of Gaussians. Gausslets are placed on a grid and combine advantages of both grid and basis set approaches. They are orthogonal, infinitely smooth, symmetric, polynomially complete, and with a high degree of locality. Because they are formed from Gaussians, they are easily combined with traditional atom-centered Gaussian bases. As a result, we also introduce diagonal approximations that dramatically reduce the computational scaling of two-electron Coulomb terms in the Hamiltonian.
- Research Organization:
- Univ. of California, Irvine, CA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- SC0008696
- OSTI ID:
- 1511036
- Alternate ID(s):
- OSTI ID: 1414610
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 24 Vol. 147; ISSN 0021-9606
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
A review on non‐relativistic, fully numerical electronic structure calculations on atoms and diatomic molecules
|
journal | May 2019 |
Basis set convergence of Wilson basis functions for electronic structure
|
journal | August 2019 |
Encoding Electronic Spectra in Quantum Circuits with Linear T Complexity
|
journal | October 2018 |
Quantum computational chemistry
|
journal | March 2020 |
| Quantum computational chemistry | text | January 2018 |
| Basis set convergence of Wilson basis functions for electronic structure | text | January 2018 |
Similar Records
Hybrid gausslet/Gaussian basis sets
Multisliced gausslet basis sets for electronic structure
Journal Article
·
Mon Nov 08 19:00:00 EST 2021
· Journal of Chemical Physics
·
OSTI ID:1978969
Multisliced gausslet basis sets for electronic structure
Journal Article
·
Sun Feb 10 19:00:00 EST 2019
· Physical Review. B
·
OSTI ID:1611139