I am trying to differentiate between states in a quantum system of graphene with open boundaries in one direction and periodic boundaries in the other direction.
The eigenstates have been simulated with the eigenenergies, but how would I proceed in calculating the expectation value of the...
Thank you for your responses.
Do you have any resources I can use to read more about this?
I'm having trouble understanding the quantisation in my system.
To give more info: I have a system of graphene that I simulated in the python package kwant. This has open boundary condition in one...
I'm confused. Could I not in a 2D eigenstate of a quantum system determine the momentum as an approxmation of a derivative in the 2D lattice of the wavefunction values?
Thank you for the reply.
I should have specified that I am talking about wavefunction values in position space and determining the momentum computationally.
Well, specifically I want to determine what angle a state is in, in a quantum system. I thought this would be best determined from the x- and y- values of the momentum values of the system.
The goal I am trying to achieve is to determine the momentum (2D) in a quantum system from the wavefunction values and the eigenergies. How would I go about this in a general manner? Any pointers to resources would be helpfull.