theorem barrier_vanishes_at_Tcross {DeltaPhi DeltaS_q : ℝ}
(hS : DeltaS_q ≠ 0) :
DeltaPhi - crossingTemperature DeltaPhi DeltaS_q * DeltaS_q = 0 := by
simp only [crossingTemperature]
rw [div_mul_cancel₀ DeltaPhi hS, sub_self]Results 17-25: Symmetric Adjustment and Transition Rates