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Brane worlds in collision.

G W Gibbons1, H Lü, C N Pope

  • 1DAMTP, Centre for Mathematical Sciences, Cambridge University Wilberforce Road, Cambridge CB3 OWA, United Kingdom.

Physical Review Letters
|May 21, 2005
PubMed
Summary
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Colliding D3 branes in supergravity create spacetime singularities but maintain a static metric near the branes. This study explores p-brane collisions, including universe-ending annihilations.

Area of Science:

  • Theoretical Physics
  • String Theory
  • Supergravity

Background:

  • The Standard Model and General Relativity face challenges at high energies.
  • String theory, particularly M-theory, offers a framework for unifying forces and particles.
  • D-branes are fundamental objects in string theory, crucial for understanding spacetime dynamics.

Purpose of the Study:

  • To find exact solutions for supergravity equations involving D-brane collisions.
  • To investigate the impact of D-brane collisions on spacetime geometry.
  • To explore the implications of these collisions for the structure of the observed Universe.

Main Methods:

  • Solving supergravity equations of motion.
  • Analyzing the metric and curvature in the vicinity of colliding D3 branes.

Related Experiment Videos

  • Generalizing solutions to arbitrary dimensions for p-brane collisions.

    • Main Results:

    • An exact solution for colliding D3 branes in a Calabi-Yau background was obtained.
    • The collision causes the ten-dimensional spacetime to split into disconnected regions with curvature singularities.
    • The spacetime metric near the D3 branes remains static during and after the collision.
    • A general class of p-brane collision solutions was derived, including a positive- and negative-tension 3-brane annihilation scenario.

    Conclusions:

    • D-brane collisions offer a mechanism for generating spacetime singularities.
    • The static metric near branes suggests localized stability despite global spacetime disruption.
    • The findings provide insights into the dynamics of higher-dimensional spacetimes and potential universe termination scenarios.