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Numerical Analysis of Finite Dimensional Approximations in Finite Temperature DFT

Numerical Analysis of Finite Dimensional Approximations in Finite Temperature DFT

Year:    2025

Author:    Ge Xu, Huajie Chen, Xingyu Gao

CSIAM Transactions on Applied Mathematics, Vol. 6 (2025), Iss. 2 : pp. 412–434

Abstract

In this paper, we study numerical approximations of the ground states in finite temperature density functional theory. We formulate the problem with respect to the density matrices and justify the convergence of the finite dimensional approximations. Moreover, we provide an optimal a priori error estimate under some mild assumptions and present some numerical experiments to support the theory.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/csiam-am.SO-2024-0015

CSIAM Transactions on Applied Mathematics, Vol. 6 (2025), Iss. 2 : pp. 412–434

Published online:    2025-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    23

Keywords:    Finite temperature density functional theory Mermin-Kohn-Sham equation density matrix a priori error estimates

Author Details

Ge Xu

Huajie Chen

Xingyu Gao