Recent content by kryshen

Dear inha, Thank you very much for your reply and for the reference to XDB. But as far as I understand, this booklet provides binding energies relative to the vacuum level for the rare gases, relative to the Fermi level for the metals, and relative to the top of the valence bands for...

I am looking for the information on the electron binding energy for the multi-electron atoms. Well, it is easy to find ionization energy, i. e. the binding energy of the last electron in the atom. But I need the energy which is necessary to separate all atomic electrons from the nucleus...

Thank your very much for this reference. Now I get the picture: if up and down quarks had equal masses, electrostatic repulsion between quarks should make the proton heavier, since it contains two up quarks with charges of +2/3. But the mass difference between the quarks wins over their...

To Astronuc, Thank you for the references, you provided. Indeed, I meant neutron when mentioned "nucleon". Still, I have a question. If the difference of nucleon masses is explained by the difference of quark structure, how the difference of u and d quark masses is explained?

I have one stupid question: Is it true that the difference of proton and nucleon mass is due to the electromagnetic self-energy of the proton? The same question about pi^0 and pi^- mass difference.

My aim is to derive the photon propagator in an arbitrary gauge. I follow Itzykson-Zuber Quantum Field Theory and start from the Lagrangian with gauge-fixing term: {\cal L}(x) = -\,\frac{1}{4}\,F_{\mu\nu}(x)F^{\mu\nu}(x) - \,\frac{1}{2\xi}\,(\partial_{\mu}A^{\mu}(x))^2 I get the following...