D-Sitter Space: Causal Structure, Thermodynamics, and Entropy

Abstract

We study the entropy of concrete de Sitter flux compactifications and deformations of them containing D-brane domain walls. We determine the relevant causal and thermodynamic properties of these "D-Sitter" deformations of de Sitter spacetimes. We find a string scale correspondence point at which the entropy localized on the D-branes (and measured by probes sent from an observer in the middle of the bubble) scales the same with large flux quantum numbers as the entropy of the original de Sitter space, and at which Bousso's bound is saturated by the D-brane degrees of freedom (up to order one coefficients) for an infinite range of times. From the geometry of a static patch of D-Sitter space and from basic relations in flux compactifications, we find support for the possibility of a low energy open string description of the static patch of de Sitter space.

46 pages, harvmac big; 14 figures

References in corpus (8)

• de Sitter Vacua in String Theory
• The statistics of string/M theory vacua
• The Anthropic Landscape of String Theory
• The Trouble with de Sitter Space
• de Sitter Space in Non-Critical String Theory
• A Moduli Fixing Mechanism in M theory
• Heretics of the False Vacuum: Gravitational Effects On and Of Vacuum Decay 2
• A Quantum Bousso Bound

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• De Sitter Vacua from Heterotic M-Theory
• A Framework for the Landscape
• A New Handle on de Sitter Compactifications
• TASI/PiTP/ISS Lectures on Moduli and Microphysics
• The Fall of Stringy de Sitter
• Enlarging the Parameter Space of Heterotic M-Theory Flux Compactifications to Phenomenological Viability
• On the Conformal Field Theory Duals of type IIA AdS_4 Flux Compactifications
• Using Energy Peaks to Count Dark Matter Particles in Decays
• Calabi-Yau Duals of Torus Orientifolds
• Auto-localization in de-Sitter space
• Warped Strings: Self-dual Flux and Contemporary Compactifications
• AdS and dS Entropy from String Junctions
• de Sitter Harmonies: Cosmological Spacetimes as Resonances
• Black branes in flux compactifications
• Towards a unitary formulation of quantum field theory in curved spacetime: the case of de Sitter spacetime
• The moduli space of hyper-K{ä}hler four-fold compactifications
• Holography for de Sitter bubble geometries