A Cosmological Super-Bounce

Abstract

We study a model for a non-singular cosmic bounce in N=1 supergravity, based on supergravity versions of the ghost condensate and cubic Galileon scalar field theories. The bounce is preceded by an ekpyrotic contracting phase which prevents the growth of anisotropies in the approach to the bounce, and allows for the generation of scale-invariant density perturbations that carry over into the expanding phase of the universe. We present the conditions required for the bounce to be free of ghost excitations, as well as the tunings that are necessary in order for the model to be in agreement with cosmological observations. All of these conditions can be met. Our model thus provides a proof-of-principle that non-singular bounces are viable in supergravity, despite the fact that during the bounce the null energy condition is violated.

38 pages, 13 figures, v3: typos corrected

References in corpus (71)

• Heterotic and Type I String Dynamics from Eleven Dimensions
• The galileon as a local modification of gravity
• The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
• Covariant Galileon
• Causality, Analyticity and an IR Obstruction to UV Completion
• Ghost Condensation and a Consistent Infrared Modification of Gravity
• Cosmic Evolution in a Cyclic Universe
• Adiabatic and entropy perturbations from inflation
• Imperfect Dark Energy from Kinetic Gravity Braiding
• The Universe as a Domain Wall
• From Big Crunch to Big Bang
• Bouncing Universes in String-inspired Gravity
• Towards a Nonsingular Bouncing Cosmology
• Heterotic M-theory in Five Dimensions
• Ekpyrotic and Cyclic Cosmology
• New Ekpyrotic Cosmology
• G-Bounce
• Kasner and Mixmaster behavior in universes with equation of state w \ge 1
• DBI and the Galileon reunited
• Energy's and amplitudes' positivity
• Generating Ekpyrotic Curvature Perturbations Before the Big Bang
• Towards a Resolution of the Cosmological Singularity in Non-local Higher Derivative Theories of Gravity
• A smooth bouncing cosmology with scale invariant spectrum
• The Exact MSSM Spectrum from String Theory
• Bouncing Galileon Cosmologies
• Suppressing CMB Quadrupole with a Bounce from Contracting Phase to Inflation
• Stable bounce and inflation in non-local higher derivative cosmology
• Non-Gaussianities in New Ekpyrotic Cosmology
• Inflation and primordial non-Gaussianities of "generalized Galileons"
• Two Field Matter Bounce Cosmology
• Obtaining the CMB anomalies with a bounce from the contracting phase to inflation
• Towards Anisotropy-Free and Non-Singular Bounce Cosmology with Scale-invariant Perturbations
• Supersymmetric Galileons
• Supersymmetric P(X,phi) and the Ghost Condensate
• Galileon Duality
• Cosmic Bounces and Cyclic Universes
• Higher-Derivative Chiral Superfield Actions Coupled to N=1 Supergravity
• Planck 2013 results support the cyclic universe
• On the Initial Conditions in New Ekpyrotic Cosmology
• Can Universe Experience Many Cycles with Different Vacua ?
• When Matter Matters
• Nonperturbative analysis of the evolution of cosmological perturbations through a nonsingular bounce
• Supersymmetric Models with Higher Dimensional Operators
• Emerging Potentials in Higher-Derivative Gauged Chiral Models Coupled to N=1 Supergravity
• Note on the production of scale-invariant entropy perturbation in the Ekpyrotic universe
• Non-Perturbative Vacua and Particle Physics in M-Theory
• Colliding Branes in Heterotic M-theory
• Proliferation in Cycle
• Local BRST cohomology in minimal D=4, N=1 supergravity
• The Ghost Condensate in N=1 Supergravity
• Visible Branes with Negative Tension in Heterotic M-Theory
• Super-Inflation, Non-Singular Bounce, and Low Multipoles
• Dark Energy and the Return of the Phoenix Universe
• Galileon bounce after ekpyrotic contraction
• Cycles in the Multiverse
• On the Quantum-To-Classical Transition for Ekpyrotic Perturbations
• Watchers of the multiverse
• Modulated Perturbations from Instant Preheating after new Ekpyrosis
• Bouncing Negative-Tension Branes
• Eternal Inflation With Non-Inflationary Pocket Universes
• Anomaly candidates and invariants of D=4, N=1 supergravity theories
• The Return of the Phoenix Universe
• The Worldvolume Action of Kink Solitons in AdS Spacetime
• On quantum properties of the four-dimensional generic chiral superfield model
• Non-singular bounce transitions in the multiverse
• DBI Inflation in N=1 Supergravity
• Non-singular AdS-dS transitions in a landscape scenario
• Supersymmetric Cubic Galileons Have Ghosts
• D=5 M-theory radion supermultiplet dynamics
• Heterotic Kink Solitons and their Worldvolume Action
• Bouncing Cosmologies

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