Ladder operators for angular momentum - Physics Forums
Dec 11, 2010 · This might be a basic question, but I'm having some difficulty understanding expectation values and ladder operators for angular momentum. = ? I know that L+ = Lx+iLy, but I don't know what the expectation value would be? Someone told …
Angular Momentum and ladder operators - Physics Forums
May 24, 2006 · I have done most of the problem in this word document (attached). I have some trouble though. In my QM class, we assumed that the z component of angular momentum Lz satisfies, Lz Ylm = m hbar Ylm and the ladder operator L+ and L- were defined as L+_ = Lx +- iLy. We were able to find the eigen values of Lx and Ly using the ladder operators.
How to show that L*= (L*)*? - Computer Science Stack Exchange
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Concatenation of two regular languages - Computer Science Stack …
Apr 3, 2018 · In a question, it is given that L is a finite language over the unary alphabet and L+ is not regular. We know that L+ = LL* Since L is finite, it must be regular because all finite languages are regular. If L is regular L* is also regular. Then how can be L+ not regular? It is the concatenation of two regular languages. Where am I wrong?
Why is separation constant l(l+1) instead of +-l^2? - Physics Forums
Oct 18, 2018 · While separating variables in the Schrodinger Equation for hydrogen atom, why are we taking separation constant to be l(l+1) instead of just l^2 or -l^2, is it just to make the angular equation in the form of Associated Legendre Equation or is there a deeper meaning to it?
formal languages - How to prove $L \cdot L^{*} = L^{+}
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Why the Integration Constant in the Schrödinger Equation is Set …
Mar 24, 2011 · Your question lacks naming the system for which the Schrödinger's equation is used. If it was for the hydrogen atom, it may be worthy to know that the total angular momentum is a constant of motion and the H_{dum
Clebsch-Gordan coefficients (l+1/2) - Physics Forums
Jul 19, 2017 · Homework Statement I was going through Sakurai's textbook and I tried to work out by myself the following expression for the Clebsch-Gordan coefficients...
Searching for radial part solution of Klein-Gordon type equation
Mar 17, 2025 · I am searching for a solution ##R(r)## of the following radial par1 of the Klein-Gordon equation $$[1]\qquad -\left(1-\left(\frac{r_0}{r}\right)^3\right)^{\frac{4}{3 ...
Show that the expectation value of angular momentum <Lx> is zero
Nov 19, 2011 · Homework Statement Show that the expectation value of angular momentum is zero Homework Equations L±|l,m = SQRT(l(l+1)−m(m±1)h|l,m±1 L± = Lx ± iLy The Attempt at a Solution I'm supposed to use ladder operators here to …