Cosmic Bubble Collisions
arXiv:1107.2593 · doi:10.1088/0264-9381/28/20/204008
Abstract
I briefly review the physics of cosmic bubble collisions in false-vacuum eternal inflation. My purpose is to provide an introduction to the subject for readers unfamiliar with it, focussing on recent work related to the prospects for observing the effects of bubble collisions in cosmology. I will attempt to explain the essential physical points as simply and concisely as possible, leaving most technical details to the references. I make no attempt to be comprehensive or complete. I also present a new solution to Einstein's equations that represents a bubble universe after a collision, containing vacuum energy and ingoing null radiation with an arbitrary density profile.
27+5 pages
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Cited by in corpus (38)
- Cosmic Bounces and Cyclic Universes
- Unwinding Inflation
- Cosmic bubble and domain wall instabilities III: The role of oscillons in three-dimensional bubble collisions
- Simulating the universe(s): from cosmic bubble collisions to cosmological observables with numerical relativity
- Analyzing Cosmic Bubble Collisions
- Collision of two kinks with inner structure
- Observing the Multiverse with Cosmic Wakes
- Large-scale anomalies from primordial dissipation
- Lorentzian Vacuum Transitions: Open or Closed Universes?
- Simulating the universe(s) II: phenomenology of cosmic bubble collisions in full General Relativity
- Parity in the CMB: Space Oddity
- Inflation from Flux Cascades
- Bubble collision with gravitation
- A Clash of Kinks: Phase shifts in colliding non-integrable solitons
- Bubble collisions and measures of the multiverse
- A scattering theory of ultrarelativistic solitons
- False vacuum decay in kink scattering
- Non-singular AdS-dS transitions in a landscape scenario
- Barnacles -- A Novel Channel for Vacuum Decay
- Oscillating instantons as homogeneous tunneling channels
- Cosmology using numerical relativity
- Multiple Cosmic Collisions and the Microwave Background Power Spectrum
- Vacua and correlators in hyperbolic de Sitter space
- Searches for other vacua I: bubbles in our universe
- Cosmological networks
- Optimal analysis of azimuthal features in the CMB
- Observable Signatures of a Classical Transition
- Topological Defects from the Multiverse
- A Simple System For Coleman-De Luccia Transitions
- Gravity waves from cosmic bubble collisions
- Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
- Morse-Bott inequalities, Topology Change and Cobordisms to Nothing
- Eternal inflation near inflection points: a challenge to primordial black hole models
- Forecasting constraints from the cosmic microwave background on eternal inflation
- Rolling Through a Vacuum
- Geometric distances between closed universes
- Barnacles and Gravity
- Cosmic Collider Gravitational Waves sourced by Right-handed Neutrino production from Bubbles: Testing Seesaw, Leptogenesis and Dark Matter