Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-11-12
Physics
High Energy Physics
High Energy Physics - Theory
20 pages LaTeX, 3 eps figures, uses epsf.sty; Based on talks given by R.J.S. at SUSY'98, Oxford, England, July 11-17, 1998, an
Scientific paper
A worldsheet approach to the study of non-abelian D-particle dynamics is presented based on viewing matrix-valued D-brane coordinate fields as coupling constants of a deformed sigma-model which defines a logarithmic conformal field theory. The short-distance structure of spacetime is shown to be naturally captured by the Zamolodchikov metric on the corresponding moduli space which encodes the geometry of the string interactions between D-particles. Spacetime quantization is induced directly by the string genus expansion and leads to new forms of uncertainty relations which imply that general relativity at very short-distance scales is intrinsically described by a non-commutative geometry. The indeterminancies exhibit decoherence effects suggesting the natural incorporation of quantum gravity by short-distance D-particle probes. Some potential experimental tests are briefly described.
Mavromatos Nick E.
Szabo Richard J.
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