In Maxwell electrostatics the electrostatic potential of a point charge is singular at position charge. this paper, nonsingular model for presented in presence momentum cutoff pmax based on one-parameter deformation Heisenberg algebra 2D-dimensional phase space. For pmax→∞, results paper reduce to ordinary

A potential based on a bond dipole representation of electrostatics is reported for peptides. Different from those popular force fields using atom-centered point-charge or point-multipole to express the electrostatics, our peptide uses chemical dipole–dipole interactions electrostatic interactions. The parameters permanent and induced dipoles are derived fitting MP2 three-body interaction energ...

Elastic materials with holes and inclusions can deform in various ways response to applied external loads. The authors present a theory for such deformations, using an analogy the concepts of polarization multipoles electrostatics. They apply infinite, two-dimensional solids circular voids inclusions, provide set experimental tests.