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Nature 439, 921-923 (23 February 2006) | doi:10.1038/439921a; Published online 22 February 2006
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Particle physics: Quarks on a gravitational string
Nick Evans1
Abstract
Quantum chromodynamics, the theory of the strong nuclear force, is notoriously intractable. An alternative approach brings gravity to bear, and produces fairly accurate predictions of some physical quantities.
The strong nuclear force is the force that causes quarks to bind together to form composite particles, such as the proton. It is explained within the standard model of particle physics by a theory known as quantum chromodynamics (QCD) in terms of fields analogous to electric fields that arise between particles that possess 'colour' charge — the strong-force equivalent of electric charge.
- Nick Evans is in the School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
Email: evans@phys.soton.ac.uk
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