- #1
neelakash
- 511
- 1
Homework Statement
It is possibly not a homework problem.However,to do a homework problem,I require this:
Boas writes the effect of Ladder operators on y_n that satisfies
y"_n-x^2y_n=-(2n+1)y_n,n=0,1,2,3...
(D-x)(D+x)y_n=-2ny_n
(D+x)(D-x)y_n=-2(n+1)y_n
Then,she proved y_(m-1)=(D+x)y_m and the other raising operator eqn.
So far there is no problem...
Now she says,if n=0,we find a solution of (D-x)(D+x)y_n=-2ny_n by requiring (D+x)y_0=0
My question is if n=0,we have (D-x)(D+x)y_0=0.
Does that mean (D+x)y_0=0 necessarily?
Homework Equations
The Attempt at a Solution
treating (d+x)y_0=t,I saw that we have (D-x)t=0 or,t=c exp[x^2/2]
So,they are treating c=0?...why?
I am toatlly confused.Please help.