Test of unparticle long range forces from perihelion precession of Mercury

TL;DR

This paper investigates how hypothetical unparticle long-range forces could cause deviations in Mercury's perihelion precession, providing constraints on unparticle interactions with matter based on astronomical observations.

Contribution

It introduces a method to constrain unparticle couplings using perihelion precession data, linking unparticle physics to planetary orbit measurements.

Findings

Constraints on unparticle-baryon couplings derived from Mercury's perihelion precession.

Limits on unparticle-lepton interactions based on orbital precession data.

Demonstrates the potential of planetary orbit observations to test unparticle theories.

Abstract

Unparticle exchange gives rise to long range forces which deviate from the inverse square law due to non-canonical dimension of unparticles. It is well known that a potential of the form $r^{-n}$ where $n$ is not equal to one gives rise to a precession in the perihelion of planetary orbits. We calculate the constraints on unparticle couplings with baryons and leptons from the observations of perihelion advance of Mercury orbit.