Solids as quantum systems questions

[Tristan Boen]

Own definition of solid: A solid is a substance that does not flow, it is hard when looking at it at the macro scale. The atoms are tightly bound together.

The electron and proton would be called a dipole. With the wall in between, these are still two dipoles, but they are shielded from eachothers radiation.

Without the wall, this is now a configuration of two hydrogen atoms. A H_2 molecule.

The optimal distance d, would be zero, as the energy would go to – infinity.

[thsr]

Good definition and you also added comments for energy. In DFT world, however, focus appears to be on particle interactions and QM.

[Kamalesh Tripathy]

Solid is a state of matter in which the matter has a well-defined shape and size (i.e. volume) due to strong inter-molecular force. The constituent points’ coordinates (i.e. position vector w.r.t any frame of reference) are constants.

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