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Exact Formulation of the Transverse Dynamic Spin Susceptibility as an Initial-Value Problem
Author
Source
Advances in Mathematical Physics
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-01-03
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
The transverse dynamic spin susceptibility is a correlation function that yields exact information about spin excitations in systems with a collinear magnetic ground state, including collective spin-wave modes.
In an ab initio context, it may be calculated within many-body perturbation theory or time-dependent density-functional theory, but the quantitative accuracy is currently limited by the available functionals for exchange and correlation in dynamically evolving systems.
To circumvent this limitation, the spin susceptibility is here alternatively formulated as the solution of an initial-value problem.
In this way, the challenge of accurately describing exchange and correlation in many-electron systems is shifted to the stationary initial state, which is much better understood.
The proposed scheme further requires the choice of an auxiliary basis set, which determines the speed of convergence but always allows systematic convergence in practical implementations.
American Psychological Association (APA)
Schindlmayr, Arno. 2018. Exact Formulation of the Transverse Dynamic Spin Susceptibility as an Initial-Value Problem. Advances in Mathematical Physics،Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1119140
Modern Language Association (MLA)
Schindlmayr, Arno. Exact Formulation of the Transverse Dynamic Spin Susceptibility as an Initial-Value Problem. Advances in Mathematical Physics No. 2018 (2018), pp.1-6.
https://search.emarefa.net/detail/BIM-1119140
American Medical Association (AMA)
Schindlmayr, Arno. Exact Formulation of the Transverse Dynamic Spin Susceptibility as an Initial-Value Problem. Advances in Mathematical Physics. 2018. Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1119140
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1119140