Space-Time Uncertainty and Noncommutativity in String Theory

  title={Space-Time Uncertainty and Noncommutativity in String Theory},
  author={Tamiaki Yoneya}
We analyze the nature of space-time nonlocality in string theory. After giving a brief overview on the conjecture of the space-time uncertainty principle, a (semi-classical) reformulation of string quantum mechanics, in which the dynamics is represented by the noncommutativity between temporal and spatial coordinates, is outlined. The formalism is then compared to the space-time noncommutative field theories associated with nonzero electric B-fields. 


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T. Yoneya
Nuovo. Cim. 8(1973)951;Prog. Theor. Phys. 51(1974) • 1907


M. Li, T. Yoneya
Rev. Lett. 78 (1997) • 1219

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