# states

1. ### QFT T-duality, Massless vector states

1. The problem statement, all variables and given/known data Part C) Please on first attachment 2. Relevant equations above,below 3. The attempt at a solution so I think I understand the background of these expressions well enough, very briefly, changing the manifold from $R^n$...
2. ### QFT T-duality, Massless vector states

1. The problem statement, all variables and given/known data Part C) Please: (attachment 1) 2. Relevant equations above,below 3. The attempt at a solution so I think I understand the background of these expressions well enough, very briefly, changing the manifold from $R^n$...
3. ### Perturbations & Mixed States

Long story short: https://i.imgur.com/6pXoUTj.png Near the bottom it says "The wavefucntions Y'v and Yv' of the two resulting states, according to perturbation theory, the following mixtures blah blah" Nothing I have been able to find on perturbation theory, undergrad and grad...
4. ### If you raise the electron to other higher shell states, can light transmission throug

-h a SOLID BLACK opaque object. So the energy levels of EM waves increase asfrom radio to X-rays, to gamma waves. If put the electron in the highest shell, or a shell second to the highest, then shine a wavelength of light, that has the lowest wavelength, which is red light. So you shine this...
5. ### First 6 allowed states for an electron in an infinite square well of width 0.2nm

Hi, just want to check if this is correct. Question asks to find the first 6 allowed states for an electron in infinite square well of width 0.2nm (Partial answer E1=9.4eV E2=37.6eV) For an infinite square well En is given by E_n = \frac{{n^2 \pi ^2 \hbar ^2 }}{{2mL^2 }} I just went that E...