Observational Tests of One-Bubble Open Inflationary Cosmological Models

Abstract

Motivated by recent studies of the one-bubble inflationary scenario, simple open cold dark matter models are tested for consistency with cosmological observations. The initial perturbation spectrum is derived by solving for the evolution of fluctuations in an open inflationary stage. A likelihood analysis is performed for the Cosmic Microwave Background anisotropies using the two-year COBE DMR data and considering models based on both the Bunch-Davies and conformal vacua. Having normalized the perturbation spectrum to fit the COBE data, we reconsider the validity of the open model from the view point of cosmic structure formation. Open models may be severely constrained by the COBE likelihood analysis. In particular, small values of ${\Omega }_0$ are ruled out in the Bunch-Davies case: we find that ${\Omega }_0\ge 0.34$ at 95\% confidence for this model.

17 pages, Latex file, Figures available upon request from [email protected]

Cited by in corpus (23)

• Karhunen-Loeve eigenvalue problems in cosmology: how should we tackle large data sets?
• The Four-Year COBE Normalization and Large-Scale Structure
• Observational Consequences of a Landscape
• Supernovae Ia Constraints on a Time-Variable Cosmological "Constant"
• Quantum fluctuations and CMB anisotropies in one-bubble open inflation models
• COBE-DMR-Normalized Open CDM Cosmogonies
• UCSB South Pole 1994 CMB anisotropy measurement constraints on open and flat-Lambda CDM cosmogonies
• CMB Anisotropy Constraints on Open and Flat-Lambda CDM Cosmogonies from UCSB South Pole, ARGO, MAX, White Dish, and SuZIE Data
• CMB Anisotropy in COBE-DMR-Normalized Open CDM Cosmogony
• CMB Anisotropy in COBE-DMR-Normalized Flat $\Lambda$ CDM Cosmogony
• Simulating the universe(s): from cosmic bubble collisions to cosmological observables with numerical relativity
• Probing Two-Field Open Inflation by Resonant Signals in Correlation Functions
• Can the Simplest Two-Field Model of Open Inflation Survive?
• Primordial Gravitational Waves From Open Inflation
• Wall fluctuation modes and tensor CMB anisotropy in open inflation models
• Observational Constraints on Open Inflation Models
• Decaying Neutrinos and Large Scale Structure Formation
• Quantized gravitational waves in the Milne universe
• Tensor Anisotropies in an Open Universe
• Complete power spectrum for an induced gravity open inflation model
• Open Universes from Finite Radius Bubbles
• Supersymmetric dark matter with a cosmological constant
• Small-Scale Fluctuations in Cosmic X-ray Background : A Power Spectrum Approach