Answer to Question #134891 in Quantum Mechanics for Sarita

Question #134891
In the ground state of harmonic oscillator,what is the probability of finding the particle outside the classical allowed region
1
Expert's answer
2020-09-28T06:02:18-0400

Pclassical=1π11eξ2dξP_{classical}=\frac{1}{\sqrt\pi}\intop_{-1}^{1}e^{-\xi^2}d\xi

This integral is the error function, so we find;

Pclassical=erf(1)=0.8427P_{classical}=erf(1)=0.8427

The probability of being outside the classical region is then;

1Pclassical=0.15731-P_{classical}=0.1573


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