Virial pressure of periodic systems with long range forces

Examination of the necessity of complete wetting near critical points in systems with long-range forces.

Long range forces in quantum gravity.

We calculate the leading quantum and semi-classical corrections to the Newtonian potential energy of two widely separated static masses. In this largedistance, static limit, the quantum behaviour of the sources does not contribute to the quantum corrections of the potential. These arise exclusively from the propagation of massless degrees of freedom. Our one-loop result is based on Modanese’s f...

Long Range Forces and Supersymmetric Bound States

We consider the long range forces between two BPS particles on the Coulomb branch of N=2 and N=4 supersymmetric gauge theories. The 1/r potential is unambiguously fixed, even at strong coupling, by the moduli dependence of central charges supported by the BPS states. The effective Coulombic coupling vanishes on marginal stability curves, while sign changes on crossing these curves explain the r...

Majorana Neutrinos and Long Range Forces

We establish that forces mediated by the exchange of a pair of Majorana neutrinos differ from those due to Dirac neutrino exchange. In the interior of stars, there would be an additional distinction. Indeed, low energy Dirac neutrinos are bound by the stellar medium whereas Majorana neutrinos are not. Therefore, the forces associated to Majorana exchange are unshielded by the stellar medium. We...

Epitaxial films stabilized by long-range forces

It has been widely accepted that the stability of an epitaxial film on a substrate of a different material is determined primarily by the competition between surface tension and stress. Here we propose that certain thermodynamic driving forces of different physical origins, acting over longer ranges than atomic length, can be strong enough to compete with elasticity. Specifically, we show that ...