17 research outputs found
Exact Equation for Wilson Loops in 2-Dimentional Euclidean Space
We derive an exact equation for simple self non-intersecting Wilson loops in
non-abelian gauge theories with gauge fields interacting with fermions in
2-dimensional Euclidean space
Some comments on the divergence of perturbation series in Quantum Eletrodynamics
It has been argued by Dyson that the perturbation series in coupling constant
in QED can not be convergent. We find that similiar albeit slightly different
arguments lead to the divergence of the series of expansion in QED.Comment: Final Version, To appear in Modern Physics Letters
Proposal for an experiment to search for Randall-Sundrum type corrections to Newton's law of gravitation
String theory, as well as the string inspired brane-world models such as the
Randall-Sundrum (RS) one, suggest a modification of Newton's law of gravitation
at small distance scales. Search for modifications of standard gravity is an
active field of research in this context. It is well known that short range
corrections to gravity would violate the Newton-Birkhoff theorem. Based on
calculations of RS type non-Newtonian forces for finite size spherical bodies,
we propose a torsion balance based experiment to search for the effects of
violation of this celebrated theorem valid in Newtonian gravity as well as the
general theory of relativity. We explain the main principle behind the
experiment and provide detailed calculations suggesting optimum values of the
parameters of the experiment. The projected sensitivity is sufficient to probe
the Randall-Sundrum parameter up to 10 microns.Comment: 4 pages and 5 figures, figures improved, minor clarifications and few
references added, final version to appear in PRD (rapid communications