In the extreme ultra-relativistic case, a value named for this physicist reduces to Planck’s constant times speed of light times this scientist’s namesake wavevector. Landau developed one theory on a material named for this scientist by hypothesizing that slowly turning on interactions would cause an adiabatic transition. At absolute zero a value named for this scientist is equal to the chemical potential; that value divided by the Boltzmann constant equals this scientist’s namesake (*) temperature. Particles named for this physicist can only form condensates (-5[1])by forming Cooper pairs. This scientist is the alphabetically latter in the name of a distribution for non-interacting identical particles that obeys the Pauli exclusion principle. For 10 points, name this Italian physicist who lends his name to the general term for half-integer spin particles. ■END■ (10[1])