Searches for other vacua I: bubbles in our universe
arXiv:1904.00020 · doi:10.1007/JHEP08(2019)148
Abstract
We discuss models in which vacua other than our own can be directly observed in the present universe. Models with density-dependent vacuum structure can give rise to `non-lethal'-vacua: vacua with lower energy-density than our vacuum, but only in regions with finite Standard Model densities. These models provide an explicit example of a bubble which is confined to a finite region of space and produces potentially detectable signatures, unlike standard Coleman tunneling events where bubbles expand at the speed of light and are never directly observable. We study the expansion and contraction of a confined bubble created after a core-collapse supernova, focusing on energy deposition that may be observable in the vicinity of a supernova remnant due to the formation and evolution of a confined bubble.
30 pages, 10 figures, 1 table
References in corpus (20)
- Ultralight scalars as cosmological dark matter
- Supernova 1987A Constraints on Sub-GeV Dark Sectors, Millicharged Particles, the QCD Axion, and an Axion-like Particle
- Searching for dilaton dark matter with atomic clocks
- An Atomic Gravitational Wave Interferometric Sensor (AGIS)
- Cosmological implications of the Higgs mass measurement
- TASI Lectures on the Cosmological Constant
- The Dynamics of Neutrino-Driven Supernova Explosions after Shock Revival in 2D and 3D
- Probing axions with neutron star inspirals and other stellar processes
- Why the cosmological constant is small and positive
- Solving the Hierarchy Problem Discretely
- A Cosmological Signature of the Standard Model Higgs Vacuum Instability: Primordial Black Holes as Dark Matter
- Towards observable signatures of other bubble universes
- Prospects for axion searches with Advanced LIGO through binary mergers
- Towards observable signatures of other bubble universes II: Exact solutions for thin-wall bubble collisions
- Surviving the crash: assessing the aftermath of cosmic bubble collisions
- Relaxing the Cosmological Constant: a Proof of Concept
- Relaxation of the Cosmological Constant
- Simulating the universe(s) II: phenomenology of cosmic bubble collisions in full General Relativity
- Implications of the detection of primordial gravitational waves for the Standard Model
- Neutron Star Mergers Chirp About Vacuum Energy
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- Maximal axion misalignment from a minimal model
- Runaway Relaxion from Finite Density
- Pi in the Sky: Neutron Stars with Exceptionally Light QCD Axions
- Hierarchies from Landscape Probability Gradients and Critical Boundaries