Phenomenology of the Equivalence Principle with Light Scalars

Abstract

Light scalar particles with couplings of sub-gravitational strength, which can generically be called 'dilatons', can produce violations of the equivalence principle. However, in order to understand experimental sensitivities one must know the coupling of these scalars to atomic systems. We report here on a study of the required couplings. We give a general Lagrangian with five independent dilaton parameters and calculate the "dilaton charge" of atomic systems for each of these. Two combinations are particularly important. One is due to the variations in the nuclear binding energy, with a sensitivity scaling with the atomic number as $A^{-1/3}$. The other is due to electromagnetism. We compare limits on the dilaton parameters from existing experiments.

5 pages

References in corpus (7)

• Test of the Equivalence Principle Using a Rotating Torsion Balance
• Testing General Relativity with Atom Interferometry
• Equivalence Principle Violations and Couplings of a Light Dilaton
• General Relativistic Effects in Atom Interferometry
• Brane-world cosmology with black strings
• Constraints on the variability of quark masses from nuclear binding
• Eotvos bounds on couplings of fundamental parameters to gravity

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