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Supertubes.

D Mateos1, P K Townsend

  • 1Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, United Kingdom. D.Mateos@damtp.cam.ac.uk

Physical Review Letters
|July 20, 2001
PubMed
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A superstring with D0-brane charge transforms into a D2-brane "supertube" in a Minkowski vacuum. Angular momentum from electromagnetic fields prevents its collapse, linking it to sigma-model Q lumps.

Area of Science:

  • High Energy Physics
  • String Theory
  • Brane Dynamics

Background:

  • Superstring theory describes fundamental particles and forces.
  • D-branes are dynamical objects in string theory.
  • Supersymmetry is a key theoretical principle.

Purpose of the Study:

  • To investigate the transformation of a D0-brane charge within a superstring.
  • To analyze the stability and properties of the resulting D2-brane structure.
  • To establish a connection between superstring/D-brane configurations and sigma-model lumps.

Main Methods:

  • Theoretical analysis of superstring and D-brane dynamics.
  • Investigation of Born-Infeld field effects on brane stability.
  • Exploration of angular momentum as a stabilizing mechanism.

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Main Results:

  • Demonstration of a IIA superstring with D0-brane charge 'blowing up' into a tubular D2-brane.
  • Identification of angular momentum from crossed electric and magnetic fields as crucial for preventing collapse.
  • Characterization of this stable D2-brane as a 'supertube'.

Conclusions:

  • The study provides a novel perspective on D-brane formation and stability.
  • The 'supertube' is shown to be a world-volume realization of the sigma-model Q lump.
  • This work bridges concepts in string theory and sigma-model physics.