Symbol gamma

The passage around this formula

…computes rather than sets aside. A quasiparticle wavepacket moving at speed v inside the linear window carries an internal clock — a spinor phase, a zitterbewegung oscillation — that runs slow by the familiar factor $\gamma$ = (1 - $v^2$/$c_{\mathrm{eff}}^2$)^{-1/2} : 1.15 at v = 0.5\,$c_{\mathrm{eff}}$ , 2.29 at 0.9\,$c_{\mathrm{eff}}$ . That dilation is real and, in principle, measurable, but only inside a window whose edge the band’s own curvature sets. Writing the correction as a term proportional to…

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