16 research outputs found
It From Bit and The Unsmooth Reality
In this short essay it is argued that the "It from Bit" idea is plausible
when assuming "generalized bits", resulting from the Kolmogorov superposition
theorem, as universal building blocks.Comment: 4 pages, submitted to FQXi 2013 Essay Contest - "It from Bit or Bit
from It
On the concepts of radial and angular kinetic energies
We consider a general central-field system in D dimensions and show that the
division of the kinetic energy into radial and angular parts proceeds
differently in the wavefunction picture and the Weyl-Wigner phase-space
picture. Thus, the radial and angular kinetic energies are different quantities
in the two pictures, containing different physical information, but the
relation between them is well defined. We discuss this relation and illustrate
its nature by examples referring to a free particle and to a ground-state
hydrogen atom.Comment: 10 pages, 2 figures, accepted by Phys. Rev.