## what is a value of psi* for a particle in 1D box stationary state?

I know that psi is equal to (2/a)^1/2 sin(n pi x/a)? what is psi*?

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 Blog Entries: 9 Recognitions: Homework Help Science Advisor Complex conjugate of "psi"...In your case,it's identical to "psi"... Daniel.

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 Quote by ohhhnooo I know that psi is equal to (2/a)^1/2 sin(n pi x/a)? what is psi*?
How is $\psi^*$ defined ? Or simpler still, what does the * do ?

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## what is a value of psi* for a particle in 1D box stationary state?

 Quote by ohhhnooo I know that psi is equal to (2/a)^1/2 sin(n pi x/a)? what is psi*?
Actually, including the time dependence, it's

$$\Psi(x,t) = \sqrt {\frac {2} {a}} \sin \left (n \pi \frac {x} {a} \right ) \exp \left (-i \frac {E_n} {\hbar} t \right )$$

so the complex conjugate is

$$\Psi^*(x,t) = \sqrt {\frac {2} {a}} \sin \left (n \pi \frac {x} {a} \right ) \exp \left (i \frac {E_n} {\hbar} t \right )$$

The complex conjugate means simply, change i to -i (and -i to i) everywhere.

 Blog Entries: 9 Recognitions: Homework Help Science Advisor In that case,he (probably) would have spelled "Psi"...He didn't intend to include the time dependence... Daniel.