Physics Reports, ISSN 0370-1573, 2009, Volume 475, Issue 1, pp. 1 - 51

We review the study of inhomogeneous perturbations about a homogeneous and isotropic background cosmology. We adopt a coordinate based approach, but give...

Perturbation theory | Cosmological inflation | Cosmology | EXPANDING UNIVERSE | EINSTEIN-HILBERT ACTION | GAUGE-INVARIANT-VARIABLES | GRAVITATIONAL-INSTABILITY | PHYSICS, MULTIDISCIPLINARY | MICROWAVE BACKGROUND ANISOTROPIES | DENSITY PERTURBATIONS | INFLATIONARY UNIVERSE | MULTIFIELD INFLATION | NON-LINEAR THEORY | QUANTUM FLUCTUATIONS | Analysis | Coordinates | Universities and colleges | Physics - Cosmology and Nongalactic Astrophysics | Physics - Earth and Planetary Astrophysics | Physics - Instrumentation and Methods for Astrophysics | Physics - High Energy Astrophysical Phenomena | Physics - Solar and Stellar Astrophysics | Physics - Astrophysics of Galaxies

Perturbation theory | Cosmological inflation | Cosmology | EXPANDING UNIVERSE | EINSTEIN-HILBERT ACTION | GAUGE-INVARIANT-VARIABLES | GRAVITATIONAL-INSTABILITY | PHYSICS, MULTIDISCIPLINARY | MICROWAVE BACKGROUND ANISOTROPIES | DENSITY PERTURBATIONS | INFLATIONARY UNIVERSE | MULTIFIELD INFLATION | NON-LINEAR THEORY | QUANTUM FLUCTUATIONS | Analysis | Coordinates | Universities and colleges | Physics - Cosmology and Nongalactic Astrophysics | Physics - Earth and Planetary Astrophysics | Physics - Instrumentation and Methods for Astrophysics | Physics - High Energy Astrophysical Phenomena | Physics - Solar and Stellar Astrophysics | Physics - Astrophysics of Galaxies

Journal Article

2009, ISBN 9780521828499, xviii, 497

The origin and evolution of the primordial perturbation is the key to understanding structure formation in the earliest stages of the Universe. It carries...

Perturbation (Astronomy) | Inflationary universe

Perturbation (Astronomy) | Inflationary universe

Book

2011, ISBN 9789814343787, xiii, 489

Book

Journal of High Energy Physics, ISSN 1126-6708, 9/2013, Volume 2013, Issue 9, pp. 1 - 56

Chromo-Natural Inflation is the first worked example of a model of inflation in which slow-roll inflation is achieved by “magnetic drift” as opposed to Hubble...

Quantum Physics | Cosmology of Theories beyond the SM | Quantum Field Theories, String Theory | Chern-Simons Theories | Classical and Quantum Gravitation, Relativity Theory | Physics | Elementary Particles, Quantum Field Theory | FIELDS | COSMOLOGICAL MODELS | FLUCTUATIONS | DYNAMICS | CONSTRAINTS | FLATNESS | GAUGE-FLATION | UNIVERSE | HORIZON | PHYSICS, PARTICLES & FIELDS | Inflation (Finance) | Analysis | Tensors | Inflation | Perturbation methods | Mathematical analysis | Gravitational waves | Mathematical models | Gages | Gauges

Quantum Physics | Cosmology of Theories beyond the SM | Quantum Field Theories, String Theory | Chern-Simons Theories | Classical and Quantum Gravitation, Relativity Theory | Physics | Elementary Particles, Quantum Field Theory | FIELDS | COSMOLOGICAL MODELS | FLUCTUATIONS | DYNAMICS | CONSTRAINTS | FLATNESS | GAUGE-FLATION | UNIVERSE | HORIZON | PHYSICS, PARTICLES & FIELDS | Inflation (Finance) | Analysis | Tensors | Inflation | Perturbation methods | Mathematical analysis | Gravitational waves | Mathematical models | Gages | Gauges

Journal Article

Nuclear Physics, Section B, ISSN 0550-3213, 2002, Volume 644, Issue 1, pp. 371 - 382

The Ekpyrotic scenario assumes that our visible Universe is a boundary brane in a five-dimensional bulk and that the hot Big Bang occurs when a nearly...

P-BRANES | STRINGS | SUPERGRAVITY | COSMOLOGICAL PERTURBATIONS | FIELD | 5-BRANE | PHYSICS, PARTICLES & FIELDS

P-BRANES | STRINGS | SUPERGRAVITY | COSMOLOGICAL PERTURBATIONS | FIELD | 5-BRANE | PHYSICS, PARTICLES & FIELDS

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 12/2014, Volume 2014, Issue 12, pp. 26 - 26

We present a comprehensive analysis of classical scalar, vector and tensor cosmological perturbations in ghost-free massive bigravity. In particular, we find...

modified gravity | cosmological perturbation theory | GRAVITATION | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | EVOLUTION | INSTABILITY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | SCALARS | PERTURBATION THEORY | EQUATIONS | VECTORS | ANALYTICAL SOLUTION

modified gravity | cosmological perturbation theory | GRAVITATION | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | EVOLUTION | INSTABILITY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | SCALARS | PERTURBATION THEORY | EQUATIONS | VECTORS | ANALYTICAL SOLUTION

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 2017, Volume 2017, Issue 7, pp. 31 - 31

We study cosmological perturbations in mimetic matter scenario with a general higher derivative function. We calculate the quadratic action and show that both...

modified gravity | cosmological perturbation theory | dark matter theory | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | DISTURBANCES | INSTABILITY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | COSMOLOGICAL MODELS | PERTURBATION THEORY | HAMILTONIANS | COMPUTERIZED SIMULATION

modified gravity | cosmological perturbation theory | dark matter theory | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | DISTURBANCES | INSTABILITY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | COSMOLOGICAL MODELS | PERTURBATION THEORY | HAMILTONIANS | COMPUTERIZED SIMULATION

Journal Article

Journal of High Energy Physics, ISSN 1126-6708, 08/2009, Volume 2009, Issue 8, pp. 101 - 101

Motivated by the Kerr-CFT conjecture, we investigate perturbations of the near-horizon extreme Kerr spacetime. The Teukolsky equation for a massless field of...

Gauge-gravity correspondence | Black holes | MASSIVE GAUGE-THEORIES | SPACETIMES | COSMOLOGICAL CONSTANT | GENERAL-RELATIVITY | Black Holes | STABILITY | EQUATIONS | PROOF | RADIATION | GRAVITY | ROTATING BLACK-HOLE | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Theory

Gauge-gravity correspondence | Black holes | MASSIVE GAUGE-THEORIES | SPACETIMES | COSMOLOGICAL CONSTANT | GENERAL-RELATIVITY | Black Holes | STABILITY | EQUATIONS | PROOF | RADIATION | GRAVITY | ROTATING BLACK-HOLE | PHYSICS, PARTICLES & FIELDS | Physics - High Energy Physics - Theory

Journal Article

The European Physical Journal C, ISSN 1434-6044, 7/2013, Volume 73, Issue 7, pp. 1 - 6

I consider the generic model independent predictions of the theory of quantum cosmological perturbations. To describe the stage of cosmic inflation, where...

Nuclear Physics, Heavy Ions, Hadrons | Measurement Science and Instrumentation | Nuclear Energy | Quantum Field Theories, String Theory | Physics | Elementary Particles, Quantum Field Theory | Astronomy, Astrophysics and Cosmology | FLATNESS | INFLATIONARY UNIVERSE | HORIZON | PHYSICS, PARTICLES & FIELDS | Amplification | Cosmological constant | Inflation | Perturbation methods | Flats | Mathematical models | Spectra | Deviation

Nuclear Physics, Heavy Ions, Hadrons | Measurement Science and Instrumentation | Nuclear Energy | Quantum Field Theories, String Theory | Physics | Elementary Particles, Quantum Field Theory | Astronomy, Astrophysics and Cosmology | FLATNESS | INFLATIONARY UNIVERSE | HORIZON | PHYSICS, PARTICLES & FIELDS | Amplification | Cosmological constant | Inflation | Perturbation methods | Flats | Mathematical models | Spectra | Deviation

Journal Article

Physical Review Letters, ISSN 0031-9007, 06/2015, Volume 115, Issue 1, p. 011301

Spatial variations in the distribution of galaxy luminosities, estimated from redshifts as distance proxies, are correlated with the peculiar velocity field....

Cosmological constant | Gravitation | Red shift | Galaxies | Perturbation methods | Data sets | Luminosity | Density | Physics - Cosmology and Nongalactic Astrophysics

Cosmological constant | Gravitation | Red shift | Galaxies | Perturbation methods | Data sets | Luminosity | Density | Physics - Cosmology and Nongalactic Astrophysics

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 06/2007, Volume 2007, Issue 6, pp. 026 - 26

Renormalization group (RG) techniques have been successfully employed in quantum field theory and statistical physics. Here we apply RG methods to study the...

Dark matter simulations | Dark matter | Cosmological simulations | Power spectrum | cosmological simulations | power spectrum | CLASSICAL MECHANICS | BARYONIC OSCILLATIONS | REDSHIFT SURVEYS | WILSON RENORMALIZATION-GROUP | PROBING DARK ENERGY | GALAXY POWER SPECTRUM | ASTRONOMY & ASTROPHYSICS | COMPUTATION | dark matter simulations | UNIVERSE | dark matter | PHYSICS, PARTICLES & FIELDS

Dark matter simulations | Dark matter | Cosmological simulations | Power spectrum | cosmological simulations | power spectrum | CLASSICAL MECHANICS | BARYONIC OSCILLATIONS | REDSHIFT SURVEYS | WILSON RENORMALIZATION-GROUP | PROBING DARK ENERGY | GALAXY POWER SPECTRUM | ASTRONOMY & ASTROPHYSICS | COMPUTATION | dark matter simulations | UNIVERSE | dark matter | PHYSICS, PARTICLES & FIELDS

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 09/2013, Volume 2013, Issue 9, pp. 27 - 27

We compute the third order gauge invariant action for scalar-graviton interactions in the Jordan frame. We demonstrate that the gauge invariant action for...

ination | cosmological perturbation theory | quantum cosmology | physics of the early universe | EVOLUTION | CHAOTIC INFLATION | ASTRONOMY & ASTROPHYSICS | DENSITY PERTURBATIONS | CONSTRAINTS | inflation | NON-GAUSSIANITY | PHYSICS, PARTICLES & FIELDS | Frames | Mathematical analysis | Perturbation | Boundaries | Gages | Curvature | Invariants | Gravitons | Gauges | TENSORS | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | GENERAL RELATIVITY THEORY | GRAVITONS | NONLINEAR PROBLEMS | EQUATIONS OF MOTION | SCALARS | PERTURBATION THEORY | ACTION INTEGRAL | GAUGE INVARIANCE

ination | cosmological perturbation theory | quantum cosmology | physics of the early universe | EVOLUTION | CHAOTIC INFLATION | ASTRONOMY & ASTROPHYSICS | DENSITY PERTURBATIONS | CONSTRAINTS | inflation | NON-GAUSSIANITY | PHYSICS, PARTICLES & FIELDS | Frames | Mathematical analysis | Perturbation | Boundaries | Gages | Curvature | Invariants | Gravitons | Gauges | TENSORS | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | GENERAL RELATIVITY THEORY | GRAVITONS | NONLINEAR PROBLEMS | EQUATIONS OF MOTION | SCALARS | PERTURBATION THEORY | ACTION INTEGRAL | GAUGE INVARIANCE

Journal Article

Classical and Quantum Gravity, ISSN 0264-9381, 02/2017, Volume 34, Issue 3, p. 35004

Penrose proposed that the big bang singularity should be constrained by requiring that the Weyl curvature vanishes there. The idea behind this past hypothesis...

Heisenberg uncertainty | Weyl curvature hypthesis | cosmological perturbations | Planck regime of the early universe | SPACE | Planck regime of the early unierse | AREA | LOOP QUANTUM COSMOLOGY | PHYSICS, MULTIDISCIPLINARY | ASTRONOMY & ASTROPHYSICS | UNIVERSE | GEOMETRY | PHYSICS, PARTICLES & FIELDS

Heisenberg uncertainty | Weyl curvature hypthesis | cosmological perturbations | Planck regime of the early universe | SPACE | Planck regime of the early unierse | AREA | LOOP QUANTUM COSMOLOGY | PHYSICS, MULTIDISCIPLINARY | ASTRONOMY & ASTROPHYSICS | UNIVERSE | GEOMETRY | PHYSICS, PARTICLES & FIELDS

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 05/2009, Volume 2009, Issue 5, pp. 013 - 13

The delta N formula for the primordial curvature perturbation zeta is extended to include vector as well as scalar fields. Formulas for the tree-level...

Cosmological perturbation theory | Physics of the early universe | Inflation | Power spectrum | power spectrum | MODELS | ISOTROPY | ASTRONOMY & ASTROPHYSICS | DENSITY PERTURBATIONS | cosmological perturbation theory | physics of the early universe | inflation | PHYSICS, PARTICLES & FIELDS | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | STATISTICS | SPECTRA | ANISOTROPY | INFLATIONARY UNIVERSE | GAUGE INVARIANCE | VECTOR FIELDS

Cosmological perturbation theory | Physics of the early universe | Inflation | Power spectrum | power spectrum | MODELS | ISOTROPY | ASTRONOMY & ASTROPHYSICS | DENSITY PERTURBATIONS | cosmological perturbation theory | physics of the early universe | inflation | PHYSICS, PARTICLES & FIELDS | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | STATISTICS | SPECTRA | ANISOTROPY | INFLATIONARY UNIVERSE | GAUGE INVARIANCE | VECTOR FIELDS

Journal Article

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 03/2019, Volume 2019, Issue 3, pp. 34 - 34

Instead of Lorentz invariance, gravitational degrees of freedom may obey Lifshitz scaling at high energies, as it happens in Horava's proposal for quantum...

cosmological perturbation theory | quantum cosmology | inflation | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

cosmological perturbation theory | quantum cosmology | inflation | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 09/2014, Volume 2014, Issue 9, pp. 21 - 21

We study cosmological perturbation theory within the framework of unimodular gravity. We show that the Lagrangian constraint on the determinant of the metric...

modified gravity | cosmological perturbation theory | CMBR theory | gravity | ENERGY | ASTRONOMY & ASTROPHYSICS | DENSITY PERTURBATIONS | CONSTANT | UNIVERSE | cosmological perturbation theory. CMBR theory | PHYSICS, PARTICLES & FIELDS | EQUATIONS OF MOTION | METRICS | PHOTONS | POTENTIALS | LAGRANGIAN FUNCTION | RELATIVISTIC RANGE | EVOLUTION | MICROWAVE RADIATION | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | GENERAL RELATIVITY THEORY | FLUCTUATIONS | PERTURBATION THEORY | GRAVITATION

modified gravity | cosmological perturbation theory | CMBR theory | gravity | ENERGY | ASTRONOMY & ASTROPHYSICS | DENSITY PERTURBATIONS | CONSTANT | UNIVERSE | cosmological perturbation theory. CMBR theory | PHYSICS, PARTICLES & FIELDS | EQUATIONS OF MOTION | METRICS | PHOTONS | POTENTIALS | LAGRANGIAN FUNCTION | RELATIVISTIC RANGE | EVOLUTION | MICROWAVE RADIATION | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | GENERAL RELATIVITY THEORY | FLUCTUATIONS | PERTURBATION THEORY | GRAVITATION

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 2009, Volume 2009, Issue 2

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 09/2015, Volume 2015, Issue 9, pp. 43 - 43

In this paper we study the generation of primordial perturbations in a cosmological setting of bigravity during inflation. We consider a model of bigravity...

ination | modified gravity | cosmological perturbation theory | primordial gravitational waves (theory) | FIELD-THEORY | ASTRONOMY & ASTROPHYSICS | BIGRAVITY | inflation | PHYSICS, PARTICLES & FIELDS | DISTURBANCES | INSTABILITY | COSMOLOGICAL CONSTANT | GALACTIC EVOLUTION | POTENTIALS | ENERGY DENSITY | INFLATIONARY UNIVERSE | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | SCALAR FIELDS | SCALARS | COSMOLOGICAL INFLATION | GRAVITATION | AMPLITUDES | VECTORS

ination | modified gravity | cosmological perturbation theory | primordial gravitational waves (theory) | FIELD-THEORY | ASTRONOMY & ASTROPHYSICS | BIGRAVITY | inflation | PHYSICS, PARTICLES & FIELDS | DISTURBANCES | INSTABILITY | COSMOLOGICAL CONSTANT | GALACTIC EVOLUTION | POTENTIALS | ENERGY DENSITY | INFLATIONARY UNIVERSE | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | SCALAR FIELDS | SCALARS | COSMOLOGICAL INFLATION | GRAVITATION | AMPLITUDES | VECTORS

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 11/2018, Volume 2018, Issue 11, pp. 12 - 12

Cosmological perturbations are considered in f (T) and in scalar-torsion f (phi) T teleparallel models of gravity. Full sets of linear perturbation equations...

modified gravity | cosmological perturbation theory | dark energy theory | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | Fysik | Physical Sciences | Astronomi, astrofysik och kosmologi | Naturvetenskap | Natural Sciences | Astronomy, Astrophysics and Cosmology

modified gravity | cosmological perturbation theory | dark energy theory | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS | Fysik | Physical Sciences | Astronomi, astrofysik och kosmologi | Naturvetenskap | Natural Sciences | Astronomy, Astrophysics and Cosmology

Journal Article