For the eigenstate with n=o,1, and 2 ,compute the probability that the coordinate of a linear harmonic oscillator in its ground state has value greater than oscillator than the amplitude of a classical oscillator of the same energy level
1
Expert's answer
2020-05-11T20:04:14-0400
In quantum case En=(n+21)ℏω
In classic case E=kx2/2=mω2A2/2
Let's find the amplitude A of oscillations for a classical oscillator with energy equal to the energy of a quantum oscillator in the quantum state n.
We obtain En=mω2An2/2⇝An=(2n+1)mωℏ
In quantum case
ψn(x)=2nn!1⋅(πℏmω)1/4⋅e−2ℏmωx2⋅Hn(ℏmωx)
where Hn(y) are Hermite polynomials, H0(y)=1 .
We want to compute the probability that the coordinate of a linear harmonic oscillator in its ground state (i.e. n=0) has value greater than ''classic zone'' x∈(−A,A), i.e.
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