Domain walls, near-BPS bubbles, and probabilities in the landscape

Abstract

We develop a theory of static BPS domain walls in stringy landscape and present a large family of BPS walls interpolating between different supersymmetric vacua. Examples include KKLT models, STU models, type IIB multiple flux vacua, and models with several Minkowski and AdS vacua. After the uplifting, some of the vacua become dS, whereas some others remain AdS. The near-BPS walls separating these vacua may be seen as bubble walls in the theory of vacuum decay. As an outcome of our investigation of the BPS walls, we found that the decay rate of dS vacua to a collapsing space with a negative vacuum energy can be quite large. The parts of space that experience a decay to a collapsing space, or to a Minkowski vacuum, never return back to dS space. The channels of irreversible vacuum decay serve as sinks for the probability flow. The existence of such sinks is a distinguishing feature of the landscape. We show that it strongly affects the probability distributions in string cosmology.

51 pages. 14 figures. Minor changes in Sect. 6; a version to appear in Phys. Rev. D

References in corpus (8)

• The Anthropic Landscape of String Theory
• Moduli Stabilization in Type IIB Orientifolds (II)
• Probabilities in the landscape: The decay of nearly flat space
• Attractor Explosions and Catalyzed Vacuum Decay
• Non-Kaehler attracting manifolds
• Probabilities in the landscape
• Transitions Between Flux Vacua
• Stability of flux vacua in the presence of charged black holes

Cited by in corpus (36)

• Inflationary Cosmology
• Sinks in the Landscape, Boltzmann Brains, and the Cosmological Constant Problem
• O'KKLT
• Is Our Universe Likely to Decay within 20 Billion Years?
• Accidental Inflation in String Theory
• Axion Inflation and Gravity Waves in String Theory
• Holography and the KKLT Scenario
• A Gravitino Distance Conjecture
• D-brane networks in flux vacua, generalized cycles and calibrations
• Stationary Measure in the Multiverse
• Is Our Universe Decaying at an Astronomical Rate?
• The Born Rule Dies
• Moduli Stabilization, Large-Volume dS Minimum Without anti-D3-Branes, (Non-)Supersymmetric Black Hole Attractors and Two-Parameter Swiss Cheese Calabi-Yau's
• Cosmological Measures without Volume Weighting
• Graceful exit from a stringy landscape via MSSM inflation
• Evidence for a bound on the lifetime of de Sitter space
• Field dynamics and tunneling in a flux landscape
• Domain walls from ten dimensions
• AdS4 flux vacua in type II superstrings and their domain-wall solutions
• Islands in the landscape
• Conifolds and Tunneling in the String Landscape
• Dynamics of false vacuum bubbles with nonminimal coupling
• Entropy and initial conditions in cosmology
• Seeing through the String Landscape - a String Hunter's Companion in Particle Physics and Cosmology
• On Measuring Distances in the Quantum Gravity Landscape
• Deforming, revolving and resolving - New paths in the string theory landscape
• Lifetime of Stringy de Sitter Vacua
• BPS Domain Walls and Vacuum Structure of N=1 Supergravity Coupled to a Chiral Multiplet
• The Fate of Nearly Supersymmetric Vacua
• Agnesi Weighting for the Measure Problem of Cosmology
• The Stabilizing Effect of Gravity Made Simple
• Eternal inflation and localization on the landscape
• Possible Anthropic Support for a Decaying Universe: A Cosmic Doomsday Argument
• Topics in vacuum decay (Ph.D Thesis)
• Kaehler-Ricci Flow, Morse Theory, and Vacuum Structure Deformation of N=1 Supersymmetry in Four Dimensions
• Mass Spectrum, Actons and Cosmological Landscape