A practical guide to density matrix embedding theory in quantum chemistry

seba — Thu, 19 May 2016 07:04:09 +0000

S. Wouters, C. A. Jiménez-Hoyos, Q. Sun, G. K.-L. Chan

Journal of Chemical Theory and Computation

Publication Date (Web): May 09, 2016

2016

Published while none of the authors were employed at the CMM

Abstract

Density matrix embedding theory (DMET) provides a theoretical framework to treat finite fragments in the presence of a surrounding molecular or bulk environment, even when there is significant correlation or entanglement between the two. In this work, we give a practically oriented and explicit description of the numerical and theoretical formulation of DMET. We also describe in detail how to perform self-consistent DMET optimizations. We explore different embedding strategies with and without a self-consistency condition in hydrogen rings, beryllium rings, and a sample SN2 reaction. The source code for the calculations in this work can be obtained from https://github.com/sebwouters/qc-dmet.

DOI

http://dx.doi.org/10.1021/acs.jctc.6b00316

Five years of density matrix embedding theory

seba — Thu, 19 May 2016 07:18:47 +0000

S. Wouters, C. A. Jiménez-Hoyos, G. K.-L. Chan

Wiley

2017

ISBN

978-111912924-0

Short content

Density matrix embedding theory (DMET) describes finite fragments in the presence of a surrounding environment. In contrast to most embedding methods, DMET explicitly allows for quantum entanglement between both. In this chapter, we discuss both the ground-state and response theory formulations of DMET, and review several applications. In addition, a proof is given that the local density of states can be obtained by working with a Fock space of bath orbitals.

http://arxiv.org/abs/1605.05547

Center for Molecular Modeling - C. A. Jiménez-Hoyos

A practical guide to density matrix embedding theory in quantum chemistry

Abstract

DOI

Five years of density matrix embedding theory

ISBN

Short content