We propose an approach to compute the ground state properties of collections of interacting asymmetric top molecules based on the density matrix renormalization group method. Linear chains of rigid water molecules of varying sizes and density are used to illustrate the method. A primitive computational basis of asymmetric top eigenstates with nuclear spin symmetry is used, and the many-body wave function is represented as a matrix product state. We introduce a singular value decomposition approach in order to represent general interaction potentials as matrix product operators. The method can be used to describe linear chains containing up to 50 water molecules. Properties such as the ground state energy, the von-Neumann entanglement entropy, and orientational correlation functions are computed. The effect of basis set truncation on the convergence of ground state properties is assessed. It is shown that specific intermolecular distance regions can be grouped by their von-Neumann entanglement entropy, which in turn can be associated with electric dipole–dipole alignment and hydrogen bond formation. Additionally, by assuming conservation of local spin states, we present our approach to be capable of calculating chains with different arrangements of the para and ortho spin isomers of water and demonstrate that for the water dimer.
Skip Nav Destination
Article navigation
28 January 2022
Research Article|
January 27 2022
Ground state of asymmetric tops with DMRG: Water in one dimension
Tobias Serwatka;
Tobias Serwatka
Department of Chemistry, University of Waterloo
, Waterloo, Ontario N2L 3G1, Canada
Search for other works by this author on:
Pierre-Nicholas Roy
Pierre-Nicholas Roy
a)
Department of Chemistry, University of Waterloo
, Waterloo, Ontario N2L 3G1, Canada
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
Department of Chemistry, University of Waterloo
, Waterloo, Ontario N2L 3G1, Canada
a)Author to whom correspondence should be addressed: [email protected]
J. Chem. Phys. 156, 044116 (2022)
Article history
Received:
November 15 2021
Accepted:
January 06 2022
Citation
Tobias Serwatka, Pierre-Nicholas Roy; Ground state of asymmetric tops with DMRG: Water in one dimension. J. Chem. Phys. 28 January 2022; 156 (4): 044116. https://doi.org/10.1063/5.0078770
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
DeePMD-kit v2: A software package for deep potential models
Jinzhe Zeng, Duo Zhang, et al.
CREST—A program for the exploration of low-energy molecular chemical space
Philipp Pracht, Stefan Grimme, et al.
Related Content
DMRG-CASPT2 study of the longitudinal static second hyperpolarizability of all-trans polyenes
J. Chem. Phys. (August 2016)
Toward DMRG-tailored coupled cluster method in the 4c-relativistic domain
J. Chem. Phys. (May 2020)
Algorithm for analytic nuclear energy gradients of state averaged DMRG-CASSCF theory with newly derived coupled-perturbed equations
J. Chem. Phys. (February 2023)
Numerical assessment for accuracy and GPU acceleration of TD-DMRG time evolution schemes
J. Chem. Phys. (January 2020)
Ground states of linear rotor chains via the density matrix renormalization group
J. Chem. Phys. (April 2018)