Speaker
Margaret Carrington
(Brandon University)
Description
Abstract:
We study the effect of anisotropy on dynamical gap generation in graphene. We work with a low energy effective theory obtained from a tight-binding Hamiltonian expanded around the Dirac points in momentum space. The resulting continuum quantum field theory is called reduced quantum electrodynamics (RQED 3+1). The theory is strongly coupled, and we use a non-perturbative Schwinger-Dyson approach. Anisotropy is introduced through the fermi velocity of the electronic quasi-particles. Our results show that the critical coupling depends only weakly on the anisotropy parameter, and increases with greater anisotropy.
Details
N/A
| Is this abstract from experiment? | No |
|---|---|
| Name of experiment and experimental site | N/A |
| Is the speaker for that presentation defined? | No |
| Internet talk | Yes |
Primary author
Margaret Carrington
(Brandon University)
