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On the Space-Time Uncertainty Relations of Liouville Strings and D Branes

G. Amelino-Camelia, J. Ellis, N. E. Mavromatos, D. V. Nanopoulos

hep-tharXiv:hep-th/9701144

Abstract

Within a Liouville approach to non-critical string theory, we argue for a non-trivial commutation relation between space and time observables, leading to a non-zero space-time uncertainty relation δx δt > 0, which vanishes in the limit of weak string coupling.

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