Second Wilson number from third-order perturbation theory for the symmetric single-impurity Kondo model at low temperatures
Year: 2024
Type: article
Abstract: We determine the impurity-induced free energy and the impurity-induced zero-field susceptibility of the symmetric single-impurity Kondo model from weak-coupling perturbation theory up to third order in the Kondo coupling at low temperatures and small magnetic fields. We reproduce the analytical structure of the zero-field magnetic susceptibility as obtained from Wilson’s renormalization group method. This permits us to obtain analytically the first two Wilson numbers.
Authors: Kevin Bauerbach, Florian Gebhard
Institution: Philipps University of Marburg
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,135
OpenAlex ID: W4395072991