The probability for transitions that lack this property in a two-level system is equal to e to the square of the off-diagonal element of the Hamiltonian divided by h-bar times a constant. Action-angle variables can be used to determine quantities named with this adjective (-5[1])that stay constant as time goes to infinity. According to a theorem (-5[2])named for this adjective, (15[1])a physical system stays in the same eigenstate (-5[1])if the (15[1])Hamiltonian (15[1])is perturbed slowly. (15[2])Two (15[3])(*) isothermal (10[1])processes along with two processes (10[1])of this type make up the Carnot (10[1])cycle. (10[4]-5[1])Heat (10[1])capacity at constant pressure (10[2])is divided by heat capacity at constant volume to give an “index” (10[1])named for this adjective. (10[3])Processes that are both reversible and have this property are isentropic. (10[2])For 10 points, identify this adjective that describes processes with no heat transfer. (10[1])■END■ (10[3])