Recent content by SUVAM ROY

Thanks a lot.

I'm having trouble choosing my advanced papers. So I want to know which fields are saturated and which are the hot ones right now.

I'll try that. Thanks again.

So, I have to take the Hermite polynomials and calculate expectation values in integration method? Or, is there any other easier method to do this? So that I can verify Ehrenfest theorem.

Sorry, but I'm still getting the same $$2<p>$$result when I replaced ##a## and ##a^{\dagger}## by ##A## and ##A^{\dagger}## in expression for x and p and did the calculations. Why this "2" is coming in the expression? Is Ehrenfest theorem also not defined in this case?

Thanks a lot.

I'm trying to check if Ehrenfest theorem is satisfied for this wave function, |Y>=(1/sqrt(2))*(|1>+|3>), where |1> and |3> are the ground and 1st exited state wave functions of a half harmonic oscillator. When I'm calculating the expectation values of x and p using annihilation creation...

Thanks. It's just my conception was not that clear. Will you check if I am right or not. While moving through periodic potential when a electron gets attracted towards a positive center(i.e. zero potential area), it can be said that a hole is created in the high potential area where the...

Well I know what is effective mass, how it's expression is obtained, how it varies for electron with wavenumber 'k' (m* vs k graph). But can't understand why for hole the m* vs k graph is opposite to the graph of electron.

Why is it opposite to that of an electron?