We propose that the strain induced effective pseudo-magnetic field in graphene can also be explained by a curl movement of the Dirac points, if the Dirac points can be regarded as a slowly varying function of position. We also prove that the Dirac points must be confined within two triangles, each one has 1/8 the area of the Brillouin zone.
@article{arxiv.1011.3291,
title = {Shift of Dirac points and strain induced pseudo-magnetic field in graphene},
author = {Hua-Tong Yang},
journal= {arXiv preprint arXiv:1011.3291},
year = {2015}
}