Download Dirac and Weyl fermions in condensed matter systems: an introduction

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“Chiral anomaly”: 1D metal
Consider 1D spinless metal, the low energy theory is
It seems that right/left-mover number
are separately conserved
However under an “electric field” F,
Semiclassical picture:
occupied states in k-space “move to the right”,
particles are transferred from left-mover to right-mover
2015/12/[email protected]