Dipankar Das

5 Questions 24 Answers 0 Followers

Questions related from Dipankar Das

Solution of Schrodinger equation under a repulsive Coulomb potential?

Is there any reference on how to solve the radial part of the Schrodinger equation under a repulsive 1/r potential? There will be no bound states, but how to find the exact wave functions??

12 December 2014 3,598 10 View

Can anyone help with diagonalization of matrices by biunitary transformation?

If I understand correctly, then any matrix can be diagonalized with real and +ve diagonal entries via a bi-unitary transformation. My question is, given a matrix, are the unitary matrices unique??...

03 March 2014 3,561 6 View

Need help on Higgs \to \gamma \gamma

Can you suggest a reference where the feynman amplitude is calculated explicitly in detail? I actually want the calculation of the top loop amplitude.

12 December 2012 9,280 2 View

What does it actually mean, when one says that the differential scattering cross section blows up in the forward direction?

Suppose we place a detector in the forward direction (practically not possible) to collect the scattered particles only. Will it collect infinite no. of particles for a finite incident flux? Am I...

04 April 2012 2,864 24 View

Is there any problem with a fermion singlet within the Standard Model?

By 'singlet' I mean SU(2) singlet, i.e. a charged fermion without its partner. Is there any theoretical drawback? As I think, it will have no coupling with the Higgs, since Higgs is not needed to...

02 February 2012 3,286 6 View