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Questions related from Yatendra Singh Jain
Apparently, the electromagnetic field is assumed to be all around a photon. Possibly it is not correct. The field is localised within about $\lambda$ space around the position of a photon. I...
03 March 2015 5,651 20 View
It has been a popular belief that super fluidity of He-II and of trapped dilute Bose gases arises due to macroscopically large fraction of particles in a single particle state of momentum p=0. ...
03 March 2015 869 8 View
Electron bubble (an electron/ positron occupying a self created spherical cavity in liquid Helium-4 or Helium-3) is an interesting real physical system which closely represents a quantum particle...
06 June 2014 1,556 3 View
It is often emphasized that superfluid and superconducting transitions are the only quantum transitions. This seems to indicate that gas-to-liquid and liquid-to-solid transformations are classical...
01 January 2014 3,919 11 View
There are number of substances which are expected to exhibit metallic behaviour according to their electronic band structure. However, these are found to be insulators or they exhibit metal to...
12 December 2013 7,309 30 View
In what follows from the condition of electron diffraction from a crystal, it appears that low values of energy/momentum of the conduction electrons in metals should have a restriction.
10 October 2013 672 1 View
The ground state of two hard core bosons in 1-D box of impenetrable walls and size L as reported in: [M. Girardeau; “Relationship between systems of impenetrable bosons and fermions in one...
12 December 2012 9,331 4 View
