On the ground states of vector nonlinear Schrödinger equations
We review recent work of the authors on the non-relativistic Schrödinger equation with a honeycomb lattice potential, . In particular, we summarize results on (i) the existence of Dirac points, conical singularities in dispersion surfaces of and (ii) the two-dimensional Dirac equations, as the large (but finite) time effective system of equations governing the evolution , for data , which is spectrally localized near a Dirac point. We conclude with a formal derivation and discussion of the...
Page 1