The coherent state |α > is defined as an eigenstate of the annihilation operator with an eigenvalue

| α> = |α >

Commutation relation between creation operator and annihilation operator [a, a^dagger] = 1 The Hermitian amplitude operators (essentially dimensionless position and momentum operators):

X1 = 1/2 (a^dagger + a), X2 = 1/(2) (a −a ^dagger)

Prove the uncertainties in coherent state

(∆X1)^2 =< |X1^2 | > −(< |X1 | >)^2 = 1/4

(∆X2)^2 =< |X2^2 | > −(< |X2 | >)^2 = 1/4

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

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the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas