Super Heavy Dark Matter Anisotropies from D-particles in the Early Universe

Abstract

We discuss a way of producing anisotropies in the spectrum of superheavy Dark matter, which are due to the distortion of the inflationary space time induced by the recoil of D-particles upon their scattering with ordinary string matter in the Early Universe. We calculate such distortions by world-sheet Liouville string theory (perturbative) methods. The resulting anisotropies are found to be proportional to the average recoil velocity and density of the D-particles. In our analysis we employ a regulated version of de Sitter space, allowing for graceful exit from inflation. This guarantees the asymptotic flatness of the space time, as required for a consistent interpretation, within an effective field theory context, of the associated Bogolubov coefficients as particle number densities. The latter are computed by standard WKB methods.

arXiv comment30 pages Latex, two eps figures incorporated

References in corpus (9)

• The Cosmological Constant
• The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
• From Big Crunch to Big Bang
• D-brane dynamics
• String Theory Modifies Quantum Mechanics
• Classical inflaton field induced creation of superheavy dark matter
• A string scenario for inflationary cosmology
• Decoherent Scattering of Light Particles in a D-Brane Background
• Particle production in time-dependent gravitational fields: the expanding mass shell

Cited by in corpus (6)

• Liouville Cosmology at Zero and Finite Temperatures
• Methods of approaching decoherence in the flavour sector due to space-time foam
• Towards a microscopic construction of flavour vacua from a space-time foam model
• Brany Liouville Inflation
• Singular lensing from the scattering on special space-time defects
• D-Flation