A Nonsingular Cosmology with a Scale-Invariant Spectrum of Cosmological Perturbations from Lee-Wick Theory
arXiv:0810.4677 · doi:10.1103/PhysRevD.80.023511
Abstract
We study the cosmology of a Lee-Wick type scalar field theory. First, we consider homogeneous and isotropic background solutions and find that they are nonsingular, leading to cosmological bounces. Next, we analyze the spectrum of cosmological perturbations which result from this model. Unless either the potential of the Lee-Wick theory or the initial conditions are finely tuned, it is impossible to obtain background solutions which have a sufficiently long period of inflation after the bounce. More interestingly, however, we find that in the generic non-inflationary bouncing cosmology, perturbations created from quantum vacuum fluctuations in the contracting phase have the correct form to lead to a scale-invariant spectrum of metric inhomogeneities in the expanding phase. Since the background is non-singular, the evolution of the fluctuations is defined unambiguously through the bounce. We also analyze the evolution of fluctuations which emerge from thermal initial conditions in the contracting phase. The spectrum of gravitational waves stemming for quantum vacuum fluctuations in the contracting phase is also scale-invariant, and the tensor to scalar ratio is not suppressed.
18 pages, 6 figures
References in corpus (20)
- Cosmological Evolution of a Quintom Model of Dark Energy
- Producing a Scale-Invariant Spectrum of Perturbations in a Hagedorn Phase of String Cosmology
- Bouncing Universe with Quintom Matter
- The Lee-Wick Standard Model
- Generating Ekpyrotic Curvature Perturbations Before the Big Bang
- String Gas Cosmology and Structure Formation
- Non-perturbative Gravity, Hagedorn Bounce & CMB
- Cosmology without inflation
- On Perturbations of Quintom Bounce
- Evolution of Metric Perturbations in Quintom Bounce model
- Spectra of primordial fluctuations in two-perfect-fluid regular bounces
- Cosmological Perturbations on a Bouncing Brane
- On the Transfer of Metric Fluctuations when Extra Dimensions Bounce or Stabilize
- K-Bounce
- On the Transfer of Adiabatic Fluctuations through a Nonsingular Cosmological Bounce
- Generalised perturbation equations in bouncing cosmologies
- Unitarity, Lorentz invariance and causality in Lee-Wick theories: An asymptotically safe completion of QED
- Speed of Sound in String Gas Cosmology
- Lee Wick Dark Energy
- Cosmological perturbations through the big bang
Cited by in corpus (169)
- f(T) teleparallel gravity and cosmology
- Quintom Cosmology: Theoretical implications and observations
- Matter Bounce Cosmology with the f(T) Gravity
- Towards a Nonsingular Bouncing Cosmology
- Bouncing Cosmologies: Progress and Problems
- Matter Bounce in Horava-Lifshitz Cosmology
- G-Bounce
- Exploring Bouncing Cosmologies with Cosmological Surveys
- Bouncing Galileon Cosmologies
- The Matter Bounce Scenario in Loop Quantum Cosmology
- Entropic cosmology: a unified model of inflation and late-time acceleration
- The Effective Field Theory of nonsingular cosmology
- Alternatives to Cosmological Inflation
- Non-singular cosmology in a model of non-relativistic gravity
- Two Field Matter Bounce Cosmology
- A Matter Bounce By Means of Ghost Condensation
- The Matter Bounce Curvaton Scenario
- Matter creation in a nonsingular bouncing cosmology
- Non-Gaussianity in a Matter Bounce
- Towards Anisotropy-Free and Non-Singular Bounce Cosmology with Scale-invariant Perturbations
- Anisotropy in a Nonsingular Bounce
- Non-singular bounce scenarios in loop quantum cosmology and the effective field description
- Evolution of Metric Perturbations in Quintom Bounce model
- Cosmology of the Very Early Universe
- Bouncing cosmological solutions from f(R,T) gravity
- The Matter Bounce Alternative to Inflationary Cosmology
- Bouncing cosmologies with dark matter and dark energy
- The Effective Field Theory of nonsingular cosmology: II
- An Extended Matter Bounce Scenario: current status and challenges
- Bounce and cyclic cosmology in extended nonlinear massive gravity
- Preheating a bouncing universe
- Inflation in Entropic Cosmology: Primordial Perturbations and non-Gaussianities
- A CDM bounce scenario
- Extended matter bounce scenario in ghost free gravity compatible with GW170817
- The past and future dynamics of quintom dark energy models
- DHOST Bounce
- Quantum Gravity in the Sky: Interplay between fundamental theory and observations
- Evolution of cosmological perturbations and the production of non-Gaussianities through a nonsingular bounce: Indications for a no-go theorem in single field matter bounce cosmologies
- Primordial perturbation with a modified dispersion relation
- Big Bounce Genesis
- Thermal Fluctuations and Bouncing Cosmologies
- Fluctuations in a Hořava-Lifshitz Bouncing Cosmology
- Correspondence between entropy-corrected holographic and Gauss-Bonnet dark energy models
- Cyclic cosmology from Lagrange-multiplier modified gravity
- Emergent Universe Scenario via Quintom Matter
- Bouncing scenario in gravity
- From a Bounce to the Dark Energy Era with Gravity
- Nonsingular bouncing cosmologies in light of BICEP2
- Scalar and Tensor Perturbations in DHOST Bounce Cosmology
- Large scale anomalies in the CMB and non-Gaussianity in bouncing cosmologies
- Evidence for bouncing evolution before inflation after BICEP2
- Matter bounce cosmology with a generalized single field: non-Gaussianity and an extended no-go theorem
- Matter Bounce Scenario in Extended Symmetric Teleparallel Gravity
- Processing of Cosmological Perturbations in a Cyclic Cosmology
- Testing symmetries in effective models of higher derivative field theories
- Ekpyrotic Cosmology with a Zero-Shear S-Brane
- Emergent Universe and Genesis from the DHOST Cosmology
- Running of the scalar spectral index in bouncing cosmologies
- Inflationary magnetogenesis with reheating phase from higher curvature coupling
- Quantum aspects of chaos and complexity from bouncing cosmology: A study with two-mode single field squeezed state formalism
- Perturbations in Matter Bounce with Non-minimal Coupling
- Bounce cosmology in generalized modified gravities
- Cosmological perturbations in SFT inspired non-local scalar field models
- Wiggles in the cosmic microwave background radiation: echoes from non-singular cyclic-inflation
- Bounce Inflation Cosmology with Standard Model Higgs Boson
- Cosmology of F(R) nonlinear massive gravity
- External Sources in Lee-Wick Theories
- A Radiation Bounce from the Lee-Wick Construction?
- Gravitational Waves in Bouncing Cosmologies from Gauge Field Production
- Cosmology of the Spinor Emergent Universe and Scale-invariant Perturbations
- Analysis of scalar perturbations in cosmological models with a non-local scalar field
- Reconstruction of a Nonminimal Coupling Theory with Scale-invariant Power Spectrum
- Theoretical Aspects of Quintom Models
- Cosmological Perturbations Across an S-brane
- Pre-inflation and Trans-Planckian Censorship
- Quadratic, Higgs and hilltop potentials in the Palatini gravity
- Large Nonlocal Non-Gaussianity from a Curvaton Brane
- Tracing Primordial Black Holes in Nonsingular Bouncing Cosmology
- Fermi-bounce cosmology and the fermion curvaton mechanism
- Lee-Wick radiation induced bouncing universe models
- The Scale-invariant Power Spectrum of Primordial Curvature Perturbation in CSTB Cosmos
- Duality and scale invariant magnetic fields from bouncing universes
- The Cosmological OTOC: Formulating new cosmological micro-canonical correlation functions for random chaotic fluctuations in Out-of-Equilibrium Quantum Statistical Field Theory
- On the Viability of the Intermediate Inflation Scenario with Gravity
- Viable tensor-to-scalar ratio in a symmetric matter bounce
- Searching for a matter bounce cosmology with low redshift observations
- On dark energy models of single scalar field
- Unconventional Cosmology
- Dark matter in a bouncing universe
- Cosmological bounces in spatially flat FRW spacetimes in metric f(R) gravity
- Fluctuations in a Cosmology with a Space-Like Singularity and their Gauge Theory Dual Description
- Density growth in Kantowski-Sachs cosmologies with cosmological constant
- Cosmology at the top of the tower
- Effective Theory of Inflationary Magnetogenesis and Constraints on Reheating
- Design of a Cyclic Multiverse
- Logarithmic entropy--corrected holographic dark energy with non--minimal kinetic coupling
- Magnetogenesis in bouncing cosmology
- Improved DHOST Genesis
- Amplification of Curvature Perturbations in Cyclic Cosmology
- Bounce and cyclic cosmology in weakly broken galileon theories
- Non-singular Brans-Dicke cosmology with cosmological constant
- Modified-gravity theories with nondynamical background fields
- Aspects of Horava-Lifshitz cosmology
- On the Instability of the Lee-Wick Bounce
- Primordial features from ekpyrotic bounces
- Generalized Lee-Wick Formulation from Higher Derivative Field Theories
- Perturbative unitarity and NEC violation in genesis cosmology
- Can the Big Bang Singularity be avoided by a single scalar field?
- Perturbations of bounce inflation scenario from modified gravity revisited
- Parity-violation in bouncing cosmology
- No-boundary Wave Function, Wheeler-DeWitt Equation and Path Integral Analysis of the Bouncing `Quantum' Cosmology
- Evading the theoretical no-go theorem for nonsingular bounces in Horndeski/Galileon cosmology
- Scalar Perturbations Through Cycles
- Production of non-gaussianities in a bouncing phase
- Probing features of the Lee-Wick quantum electrodynamics
- Reconstruction of f(R) models with Scale-invariant Power Spectrum
- Primordial Magnetogenesis in a Bouncing Universe
- Massive gravity and the suppression of anisotropies and gravitational waves in a matter-dominated contracting universe
- Probing the origin of our universe through primordial gravitational waves by Ali CMB project
- Bouncing with shear: Implications from quantum cosmology
- Unitarity and Lee-Wick prescription at one loop level in the effective Myers-Pospelov electrodynamics: the annihilation
- Phantom Behavior Bounce with Tachyon and Non-minimal Derivative Coupling
- Fluctuations through a Vibrating Bounce
- Bouncing universe from a modified dispersion relation
- Enhance Primordial Black Hole Abundance through the Non-linear Processes around Bounce Point
- The Trans-Planckian Problem for Inflationary Cosmology Revisited
- Intricacies of Cosmological bounce in polynomial metric gravity for flat FLRW spacetime
- Constraints on Models with a Break in the Primordial Power Spectrum
- Probing signatures of bounce inflation with current observations
- Bouncing behavior in gravity: Phantom crossing and energy conditions
- Dark Energy Perturbations Revisited
- Theoretical implications of detecting gravitational waves
- Bouncing universe with modified dispersion relation
- Non-singular Cyclic Cosmology without Phantom Menace
- Sourced fluctuations in generic slow contraction
- The CST Bounce Universe model -- a parametric study
- Dark matter and baryogenesis in the Fermi-bounce curvaton mechanism
- Dynamics of Cosmological Perturbations and Reheating in the Anamorphic Universe
- Higher Order Lagrangians inspired by the Pais-Uhlenbeck Oscillator and their cosmological applications
- Thermal Fluctuations of Dark Matter in Bouncing Cosmology
- Sourced Scalar Fluctuations in Bouncing Cosmology
- Thermodynamics of the Lee-Wick partners: An alternative approach
- Transition between phantom and non-phantom phases with time dependent cosmological constant and Cardy-Verlinde formula
- Thermally Producing and Weakly Freezing-out Dark Matter in Bouncing Universe
- Metric-Affine Formalism of Higher Derivative Scalar Fields in Cosmology
- Dirichlet boundary condition for the Lee-Wick-like scalar model
- Interpreting Pulsar Timing Array data of Gravitational Waves with Ekpyrosis-Bouncing Cosmology
- Scale-invariant spectrum of Lee-Wick model in de Sitter spacetime
- Scale-invariant power spectra from a Weyl-invariant scalar-tensor theory
- Cosmology of Horava-Lifshitz f(R) Gravity
- Testing the Lorentz and CPT Symmetry with CMB polarizations and a non-relativistic Maxwell Theory
- Note on nonsingular cyclic universes in the deformed Horava-Lifshitz gravity
- Warm and Cold Dark Matter in Bouncing Universe
- Scale-invariant scalar spectrum from the nonminimal derivative coupling with fourth-order term
- Exponential correction to Friedmann equations
- A toy model based analysis on the effect of the Lee-Wick partners in the evolution of the early universe
- Horizon Complementarity and Casimir Violations of the Null Energy Condition
- A short review on Quintom dark energy theory
- On the detection of primordial gravitational waves produced in bouncing models
- Dynamics of the universe as a "test 3-brane" in a 5D bulk
- Scalar Perturbation in Symmetric Lee-Wick Bouncing Universe
- Constraining matter-bounce scenario from scalar-induced vector perturbations
- Bouncing Universe with exotic radiation
- The twilight of the single field slow rolling inflaton
- Adiabatic fluctuations from cosmic strings in a contracting universe
- Cosmic tango between the very small and the very large: Addressing CMB anomalies through Loop Quantum Cosmology
- Cosmological three-coupled scalar theory for the dS/LCFT correspondence
- Discrepancies between observational data and theoretical forecast in single field slow roll inflation
- Decoupling Inflation From the String Scale