# part bandS2
== S2 equal bodies, regime (ii), smaller eta: L=256 g1=0.0023438 g2=0.0023438 tau1=7.324e-06 tau2=7.324e-06
   band contract in laboratory coordinates: residual of its Bloch states 7.3e-16 (without source)
   s=16: W_0'/g_s=-1.381557e-05, W_b'/g_s=1.0358e-06; held-field average (no kinetic part): W_b,held'/W_b'-1=-3.36e-02
     band fixed source: W'/W_0'-1=-1.87e-04, (W'-W_0')/|W_b'|=2.49e-03, W_b'/W_b'(7.15)-1=2.45e-03 (= Gamma_b ratio), W_1'/W_1'(7.15)-1=-2.6e-06, W_2'/W_2'(7.15)-1=-2.6e-06
   s=32: W_0'/g_s=-1.231290e-05, W_b'/g_s=6.7197e-07; held-field average (no kinetic part): W_b,held'/W_b'-1=-4.61e-02
     band fixed source: W'/W_0'-1=-1.11e-04, (W'-W_0')/|W_b'|=2.04e-03, W_b'/W_b'(7.15)-1=1.96e-03 (= Gamma_b ratio), W_1'/W_1'(7.15)-1=-3.9e-06, W_2'/W_2'(7.15)-1=-3.9e-06
   s=64: W_0'/g_s=-8.705623e-06, W_b'/g_s=2.1655e-07; held-field average (no kinetic part): W_b,held'/W_b'-1=-1.01e-01
     band fixed source: W'/W_0'-1=-6.98e-05, (W'-W_0')/|W_b'|=2.81e-03, W_b'/W_b'(7.15)-1=2.73e-03 (= Gamma_b ratio), W_1'/W_1'(7.15)-1=-1.8e-06, W_2'/W_2'(7.15)-1=-1.8e-06
   lowest 21 band levels with the fixed source (g=1e-06), first-order shifts; bond effect max|mid-nobond|=7.989e-06, kinetic effect max|mid-held|=4.927e-07
     max|band - h_c[ME]|=1.554e-09 (0.000 of bond effect)
     max|band - h_c[mid]|=6.617e-08 (0.008 of bond effect)
     max|band - h_c[held]|=5.567e-07 (0.070 of bond effect)