Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session D14: Dirac and Weyl Semimetals: Theory II
3:00 PM–5:48 PM,
Monday, March 4, 2024
Room: M100E
Sponsoring
Unit:
DCMP
Chair: Yuxin Wang, Florida State University
Abstract: D14.00011 : Interaction renormalization of generalized semi-Dirac fermions*
5:00 PM–5:12 PM
Presenter:
Mohamed M Elsayed
(University of Vermont)
Authors:
Mohamed M Elsayed
(University of Vermont)
Valeri N Kotov
(University of Vermont)
A first-order perturbative treatment of interactions produces infrared divergences in the self-energy corrections to the coupling parameters (velocity and generalized mass). We discuss the exact solutions of the perturbative renormalization group equations, within the RPA framework, which yield an extraordinarily strong spectrum renormalization at low energies whereby the flatness in the non-relativistic direction is dramatically reduced, resulting in quasi-linear behavior. Thus Coulomb interactions have a profound effect on the fermionic spectrum, and subsequently on all physical observables at low temperature.
*We acknowledge financial support from NASA grant number 80NSSC19M0143.
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