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1×106
Why this formula appears here
Line up every platform where this cone speed has actually been measured, under one fixed convention — the cone-front group velocity at the relevant filling or interaction strength — and the span comes out to nine and a half orders of magnitude, not the round eleven a first pass at the argument reached for. The bottom of the range is Cheneau’s Bose-Hubbard cone, at 1.1 millimetres per second; the top is graphene’s Dirac cone, whose Fermi velocity runs from about 1×10^{6} metres per second at ordinary carrier density up to roughly 3×10^{6} metres per second near the point where the conduction and valence bands touch, boosted there by weakly screened electron-electron interactions [ 7…
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Equation 17 · Crossed Fields
This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.
Line up every platform where this cone speed has actually been measured, under one fixed convention — the cone-front group velocity at the relevant filling or interaction strength — and the span comes out to nine and a half orders of magnitude, not the round eleven a first pass at the argument reached for. The bottom of the range is Cheneau’s Bose-Hubbard cone, at 1.1 millimetres per second; the top is graphene’s Dirac cone, whose Fermi velocity runs from about 1×10^{6} metres per second at ordinary carrier density up to roughly 3×10^{6} metres per second near the point where the conduction and valence bands touch, boosted there by weakly screened electron-electron interactions [ 7…
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