@article {1459511,
	title = {Lazy electrons in graphene},
	journal = {PNAS},
	year = {2019},
	abstract = {Within a tight-binding approximation, we numerically determine the time evolution of graphene electronic states in the presence of classically vibrating nuclei. There is no reliance on the Born{\textendash}Oppenheimer approximation within the p-orbital tight-binding basis, although our approximation is {\textquotedblleft}atomically adiabatic{\textquotedblright}: the basis p-orbitals are taken to follow nuclear positions. Our calculations show that the strict adiabatic Born{\textendash}Oppenheimer approximation fails badly. We find that a diabatic (lazy electrons responding weakly to nuclear distortions) Born{\textendash}Oppenheimer model provides a much more accurate picture and suggests a generalized many-body Bloch orbital-nuclear basis set for describing electron{\textendash}phonon interactions in graphene.},
	url = {https://doi.org/10.1073/pnas.1908624116 },
	author = {Vaibhav Mohanty and Heller, EricJ.}
}
