Modern Physics Letters A, ISSN 0217-7323, 12/2018, Volume 33, Issue 40, p. 1850236

We consider a homogeneous and isotropic Universe, described by the minisuperspace Lagrangian with the scale factor as a generalized coordinate. We show that...

particle production | Lagrangian | torsion | scale factor | spin | uncertainty principle | Friedmann equations | Universe | primordial fluctuations | inflation | INVARIANCE | ENERGY | GENERAL-RELATIVITY | PHYSICS, NUCLEAR | PHYSICS, MATHEMATICAL | PARTICLE-PRODUCTION | INFLATIONARY UNIVERSE | QUANTIZED-FIELDS | COSMOLOGICAL MODELS | ASTRONOMY & ASTROPHYSICS | CREATION | PHYSICS, PARTICLES & FIELDS

particle production | Lagrangian | torsion | scale factor | spin | uncertainty principle | Friedmann equations | Universe | primordial fluctuations | inflation | INVARIANCE | ENERGY | GENERAL-RELATIVITY | PHYSICS, NUCLEAR | PHYSICS, MATHEMATICAL | PARTICLE-PRODUCTION | INFLATIONARY UNIVERSE | QUANTIZED-FIELDS | COSMOLOGICAL MODELS | ASTRONOMY & ASTROPHYSICS | CREATION | PHYSICS, PARTICLES & FIELDS

Journal Article

The Astrophysical Journal, ISSN 0004-637X, 07/2010, Volume 717, Issue 1, pp. 526 - 541

We compute the effect of primordial non-Gaussianity on the halo mass function, using excursion set theory. In the presence of non-Gaussianity, the stochastic...

Large-scale structure of universe | Cosmology: theory | EVOLUTION | PRIMORDIAL NON-GAUSSIANITY | CLUSTERS | COLLAPSE | BIAS | ASTRONOMY & ASTROPHYSICS | GALAXIES | SIMULATIONS | large-scale structure of universe | PROBE | cosmology: theory | ABUNDANCE | VARIATIONS | STOCHASTIC PROCESSES | MARKOV PROCESS | MATHEMATICAL EVOLUTION | FUNCTIONS | SIMULATION | MATHEMATICS | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | FLUCTUATIONS | MASS | SET THEORY | UNIVERSE | MATHEMATICAL METHODS AND COMPUTING

Large-scale structure of universe | Cosmology: theory | EVOLUTION | PRIMORDIAL NON-GAUSSIANITY | CLUSTERS | COLLAPSE | BIAS | ASTRONOMY & ASTROPHYSICS | GALAXIES | SIMULATIONS | large-scale structure of universe | PROBE | cosmology: theory | ABUNDANCE | VARIATIONS | STOCHASTIC PROCESSES | MARKOV PROCESS | MATHEMATICAL EVOLUTION | FUNCTIONS | SIMULATION | MATHEMATICS | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | FLUCTUATIONS | MASS | SET THEORY | UNIVERSE | MATHEMATICAL METHODS AND COMPUTING

Journal Article

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 07/2019, Volume 2019, Issue 7, pp. 50 - 50

We calculate the scalar power spectrum generated by sourced fluctuations due to coupling between the scalar field, which holds most of the energy density of...

PRE-BIG-BANG | alternatives to inflation | ASTRONOMY & ASTROPHYSICS | cosmological perturbation theory | primordial gravitational waves (theory) | physics of the early universe | PHYSICS, PARTICLES & FIELDS

PRE-BIG-BANG | alternatives to inflation | ASTRONOMY & ASTROPHYSICS | cosmological perturbation theory | primordial gravitational waves (theory) | physics of the early universe | PHYSICS, PARTICLES & FIELDS

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 07/2018, Volume 2018, Issue 7, pp. 57 - 57

Heavy scalar fields can undergo an instability during inflation as a result of their kinetic couplings with the inflaton. This is known as the geometrical...

Cosmological perturbation theory | non-gaussianity | inflation | cosmological perturbation theory | PERTURBATIONS | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

Cosmological perturbation theory | non-gaussianity | inflation | cosmological perturbation theory | PERTURBATIONS | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

Journal Article

Progress of theoretical physics, ISSN 0033-068X, 06/2010, Volume 123, Issue 6, pp. 1041 - 1068

We study the statistical nature of primordial fluctuations from an anisotropic inflation which is realized by a vector field coupled to an inflaton. We find a...

PERTURBATIONS | MODELS | PHYSICS, MULTIDISCIPLINARY | HEMISPHERICAL POWER ASYMMETRY

PERTURBATIONS | MODELS | PHYSICS, MULTIDISCIPLINARY | HEMISPHERICAL POWER ASYMMETRY

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 08/2017, Volume 2017, Issue 8, pp. 17 - 17

We discuss early structure formation of small scales sourced by primordial black holes (PBHs) which constitute a small part of present cold dark matter...

physics of the early universe | absorption and radiation processes | primordial black holes | GRAVITATIONAL-WAVE | PERTURBATIONS | REIONIZATION | EARLY UNIVERSE | INTERGALACTIC MEDIUM | POST-COLLAPSE EQUILIBRIUM | MODEL | HIGH-REDSHIFT | ASTRONOMY & ASTROPHYSICS | STARS | GALAXIES | PHYSICS, PARTICLES & FIELDS | RED SHIFT | NONLUMINOUS MATTER | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | FLUCTUATIONS | MASS | SPECTRA | BLACK HOLES | ABUNDANCE

physics of the early universe | absorption and radiation processes | primordial black holes | GRAVITATIONAL-WAVE | PERTURBATIONS | REIONIZATION | EARLY UNIVERSE | INTERGALACTIC MEDIUM | POST-COLLAPSE EQUILIBRIUM | MODEL | HIGH-REDSHIFT | ASTRONOMY & ASTROPHYSICS | STARS | GALAXIES | PHYSICS, PARTICLES & FIELDS | RED SHIFT | NONLUMINOUS MATTER | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | FLUCTUATIONS | MASS | SPECTRA | BLACK HOLES | ABUNDANCE

Journal Article

Foundations of Physics, ISSN 0015-9018, 6/2016, Volume 46, Issue 6, pp. 702 - 735

We argue that, under certain plausible assumptions, de Sitter space settles into a quiescent vacuum in which there are no dynamical quantum fluctuations. Such...

History and Philosophical Foundations of Physics | Everett (Many-Worlds) interpretation | Philosophy of Science | Quantum fluctuations | Mechanics | Cosmology | Foundations of quantum mechanics | Quantum Physics | Statistical Physics, Dynamical Systems and Complexity | Classical and Quantum Gravitation, Relativity Theory | Physics | DECOHERENCE | PRIMORDIAL FLUCTUATIONS | VACUUM | STATES | PHYSICS, MULTIDISCIPLINARY | TERMS | SUGGESTED INTERPRETATION | SCALAR FIELD | EINSELECTION

History and Philosophical Foundations of Physics | Everett (Many-Worlds) interpretation | Philosophy of Science | Quantum fluctuations | Mechanics | Cosmology | Foundations of quantum mechanics | Quantum Physics | Statistical Physics, Dynamical Systems and Complexity | Classical and Quantum Gravitation, Relativity Theory | Physics | DECOHERENCE | PRIMORDIAL FLUCTUATIONS | VACUUM | STATES | PHYSICS, MULTIDISCIPLINARY | TERMS | SUGGESTED INTERPRETATION | SCALAR FIELD | EINSELECTION

Journal Article

Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 2016, Volume 455, Issue 1, pp. 552 - 562

We provide predictions on small-scale cosmological density power spectrum from supernova lensing dispersion. Parametrizing the primordial power spectrum with...

Weak | Inflation | Theory | Gravitational lensing | Cosmology | Cosmological parameters | Large-scale structure of Universe | OPTICAL DEPTHS | IA SUPERNOVAE | large-scale structure of Universe | gravitational lensing: weak | inflation | cosmology: theory | POWER SPECTRUM | ASTRONOMY & ASTROPHYSICS | DARK-MATTER | CONVERGENCE | PROBABILITY-DISTRIBUTION FUNCTIONS | SDSS-II | UNIVERSE | BARYONS | MAGNIFICATION | cosmological parameters

Weak | Inflation | Theory | Gravitational lensing | Cosmology | Cosmological parameters | Large-scale structure of Universe | OPTICAL DEPTHS | IA SUPERNOVAE | large-scale structure of Universe | gravitational lensing: weak | inflation | cosmology: theory | POWER SPECTRUM | ASTRONOMY & ASTROPHYSICS | DARK-MATTER | CONVERGENCE | PROBABILITY-DISTRIBUTION FUNCTIONS | SDSS-II | UNIVERSE | BARYONS | MAGNIFICATION | cosmological parameters

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 05/2016, Volume 2016, Issue 5, pp. 29 - 29

We consider a relativistic plasma of fermions coupled to an Abelian gauge field and carrying a chiral charge asymmetry, which might arise in the early Universe...

primordial magnetic fields | particle physics - cosmology connection | cosmic magnetic fields theory | baryon asymmetry | FIELDS | EARLY UNIVERSE | WEINBERG-SALAM THEORY | SPHALERONS | BARYOGENESIS | BLAZARS | ASTRONOMY & ASTROPHYSICS | CONSTRAINTS | ELECTROWEAK THEORY | FINITE-TEMPERATURE | BARYON | PHYSICS, PARTICLES & FIELDS | Phenomenology | High Energy Physics - Phenomenology | High Energy Physics | High Energy Physics - Theory | Lattice | Astrophysics - Cosmology and Nongalactic Astrophysics | MAGNETIC FIELDS | U-1 GROUPS | PHYSICS OF ELEMENTARY PARTICLES AND FIELDS | FINE STRUCTURE | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | GAUGE INVARIANCE | RELATIVISTIC RANGE | STANDARD MODEL | ASYMMETRY | HELICITY | COSMOLOGY | NONLUMINOUS MATTER | FLUCTUATIONS | CHIRALITY | UNIVERSE

primordial magnetic fields | particle physics - cosmology connection | cosmic magnetic fields theory | baryon asymmetry | FIELDS | EARLY UNIVERSE | WEINBERG-SALAM THEORY | SPHALERONS | BARYOGENESIS | BLAZARS | ASTRONOMY & ASTROPHYSICS | CONSTRAINTS | ELECTROWEAK THEORY | FINITE-TEMPERATURE | BARYON | PHYSICS, PARTICLES & FIELDS | Phenomenology | High Energy Physics - Phenomenology | High Energy Physics | High Energy Physics - Theory | Lattice | Astrophysics - Cosmology and Nongalactic Astrophysics | MAGNETIC FIELDS | U-1 GROUPS | PHYSICS OF ELEMENTARY PARTICLES AND FIELDS | FINE STRUCTURE | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | GAUGE INVARIANCE | RELATIVISTIC RANGE | STANDARD MODEL | ASYMMETRY | HELICITY | COSMOLOGY | NONLUMINOUS MATTER | FLUCTUATIONS | CHIRALITY | UNIVERSE

Journal Article

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 06/2019, Volume 2019, Issue 6, pp. 16 - 16

The most up to date femto- and micro-lensing constraints indicate that primordial black holes of similar to 10(-16)M(circle dot) and similar to 10(-12)...

PERTURBATIONS | inflation | primordial black holes | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

PERTURBATIONS | inflation | primordial black holes | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS

Journal Article

Astronomy and Astrophysics, ISSN 0004-6361, 11/2018, Volume 619, p. A29

We have considered the formation of the luminescent subordinate HeI lines by the absorption of continuum radiation from a source in the lines of the main HeI...

Cosmic background radiation | Early Universe | RECOMBINATION | cosmic background radiation | ASTRONOMY & ASTROPHYSICS | DISTORTIONS | PRIMORDIAL HYDROGEN | SPECTRUM | early Universe | UNIVERSE | RADIATION | SCATTERING | HELIUM | Temperature | Red shift | Radiation sources | Radiation | Continuum radiation | Variations | Universe | Black body radiation | Photons | Background radiation | Big Bang theory | Temperature fluctuations

Cosmic background radiation | Early Universe | RECOMBINATION | cosmic background radiation | ASTRONOMY & ASTROPHYSICS | DISTORTIONS | PRIMORDIAL HYDROGEN | SPECTRUM | early Universe | UNIVERSE | RADIATION | SCATTERING | HELIUM | Temperature | Red shift | Radiation sources | Radiation | Continuum radiation | Variations | Universe | Black body radiation | Photons | Background radiation | Big Bang theory | Temperature fluctuations

Journal Article

Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 04/2013, Volume 87, Issue 8

This analysis aims at exploring what can be said about the growth rate of magnetized inhomogeneities under two concurrent hypotheses: a phase of quasi-de...

EARLY UNIVERSE | MODELS | INVARIANT COSMOLOGICAL PERTURBATIONS | ASTRONOMY & ASTROPHYSICS | DENSITY PERTURBATIONS | PROBE WMAP OBSERVATIONS | CREATION | PRIMORDIAL MAGNETIC-FIELDS | SCALAR | GAUGE | PHYSICS, PARTICLES & FIELDS

EARLY UNIVERSE | MODELS | INVARIANT COSMOLOGICAL PERTURBATIONS | ASTRONOMY & ASTROPHYSICS | DENSITY PERTURBATIONS | PROBE WMAP OBSERVATIONS | CREATION | PRIMORDIAL MAGNETIC-FIELDS | SCALAR | GAUGE | PHYSICS, PARTICLES & FIELDS

Journal Article

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 09/2016, Volume 2016, Issue 9, pp. 33 - 33

We investigate primordial gravitational waves and curvature perturbations in de Rham-Gabadadze-Tolley (dRGT) bimetric gravity. We evaluate the power-spectra in...

modified gravity | ASTRONOMY & ASTROPHYSICS | cosmological perturbation theory | primordial gravitational waves (theory) | inflation | RANGE | PHYSICS, PARTICLES & FIELDS | General Relativity and Quantum Cosmology | in ation | High Energy Physics - Theory | modi ed gravity | Astrophysics - Cosmology and Nongalactic Astrophysics | CONFORMAL INVARIANCE | GENERAL RELATIVITY THEORY | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | SCALAR FIELDS | GRAVITATIONAL WAVES | METRICS | PERTURBATION THEORY | COSMOLOGICAL INFLATION | ACTION INTEGRAL | INFLATIONARY UNIVERSE

modified gravity | ASTRONOMY & ASTROPHYSICS | cosmological perturbation theory | primordial gravitational waves (theory) | inflation | RANGE | PHYSICS, PARTICLES & FIELDS | General Relativity and Quantum Cosmology | in ation | High Energy Physics - Theory | modi ed gravity | Astrophysics - Cosmology and Nongalactic Astrophysics | CONFORMAL INVARIANCE | GENERAL RELATIVITY THEORY | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | SCALAR FIELDS | GRAVITATIONAL WAVES | METRICS | PERTURBATION THEORY | COSMOLOGICAL INFLATION | ACTION INTEGRAL | INFLATIONARY UNIVERSE

Journal Article

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN 1475-7516, 05/2016, Issue 5

We consider a relativistic plasma of fermions coupled to an Abelian gauge field and carrying a chiral charge asymmetry, which might arise in the early Universe...

primordial magnetic fields | FIELDS | EARLY UNIVERSE | NUMBER NON-CONSERVATION | WEINBERG-SALAM THEORY | SPHALERONS | BARYOGENESIS | particle physics - cosmology connection | ASTRONOMY & ASTROPHYSICS | CONSTRAINTS | cosmic magnetic fields theory | baryon asymmetry | ELECTROWEAK THEORY | FINITE-TEMPERATURE | BARYON | PHYSICS, PARTICLES & FIELDS

primordial magnetic fields | FIELDS | EARLY UNIVERSE | NUMBER NON-CONSERVATION | WEINBERG-SALAM THEORY | SPHALERONS | BARYOGENESIS | particle physics - cosmology connection | ASTRONOMY & ASTROPHYSICS | CONSTRAINTS | cosmic magnetic fields theory | baryon asymmetry | ELECTROWEAK THEORY | FINITE-TEMPERATURE | BARYON | PHYSICS, PARTICLES & FIELDS

Journal Article

The Astrophysical Journal, ISSN 0004-637X, 12/2011, Volume 742, Issue 2, pp. 124 - jQuery1323901357848='48'

We report a search for fluctuations of the sky brightness toward the north ecliptic pole with the Japanese infrared astronomical satellite AKARI, at 2.4, 3.2,...

early universe | diffuse radiation | cosmology: observations | EXPERIMENT SEARCH | LIGHT | DEEP FIELD | 1ST STARS | MU-M | PRIMORDIAL STARS | CAMERA IRC | POPULATION-III | ASTRONOMY & ASTROPHYSICS | INTERPLANETARY DUST CLOUD | GALAXY COUNTS | Physics - Cosmology and Nongalactic Astrophysics | TELESCOPES | RED SHIFT | ZODIACAL LIGHT | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | NASA | STARS | GALAXIES | BRIGHTNESS | UNIVERSE

early universe | diffuse radiation | cosmology: observations | EXPERIMENT SEARCH | LIGHT | DEEP FIELD | 1ST STARS | MU-M | PRIMORDIAL STARS | CAMERA IRC | POPULATION-III | ASTRONOMY & ASTROPHYSICS | INTERPLANETARY DUST CLOUD | GALAXY COUNTS | Physics - Cosmology and Nongalactic Astrophysics | TELESCOPES | RED SHIFT | ZODIACAL LIGHT | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | NASA | STARS | GALAXIES | BRIGHTNESS | UNIVERSE

Journal Article

International Journal of Modern Physics D, ISSN 0218-2718, 10/2012, Volume 21, Issue 10, pp. 1250080 - 1250011

In this paper, we investigate power spectrum of a smoothed scalar field. The smoothing leads to regularization of the UV divergences and can be related with...

Primordial cosmological perturbation | cosmic microwave background radiation | ASTRONOMY & ASTROPHYSICS | Inflation | Smoothing | Fluctuation | Multipoles | Scalars | Gaussian | Diffusion | Regularization | Physics - High Energy Physics - Theory

Primordial cosmological perturbation | cosmic microwave background radiation | ASTRONOMY & ASTROPHYSICS | Inflation | Smoothing | Fluctuation | Multipoles | Scalars | Gaussian | Diffusion | Regularization | Physics - High Energy Physics - Theory

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 10/2013, Volume 2013, Issue 10, pp. 24 - 24

We re-examine the non-singular Matter Bounce scenario first developed in [20], which starts with a matter-dominated period of contraction and transitions into...

cosmological perturbation theory | alternatives to ination | PRIMORDIAL FLUCTUATIONS | PERTURBATIONS | alternatives to inflation | STATE | BIG-BANG | PHASE | MODELS | ASTRONOMY & ASTROPHYSICS | CONSTRAINTS | SPECTRUM | UNIVERSE | QUANTUM FLUCTUATIONS | PHYSICS, PARTICLES & FIELDS | Mathematical analysis | Small scale | Fluctuation | Cosmology | Scalars | Evolution | Entropy | Perturbation | Curvature | AMPLIFICATION | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | SCALAR FIELDS | FLUCTUATIONS | PERTURBATION THEORY | SCALE INVARIANCE | GRAVITATION | AMPLITUDES | ENTROPY

cosmological perturbation theory | alternatives to ination | PRIMORDIAL FLUCTUATIONS | PERTURBATIONS | alternatives to inflation | STATE | BIG-BANG | PHASE | MODELS | ASTRONOMY & ASTROPHYSICS | CONSTRAINTS | SPECTRUM | UNIVERSE | QUANTUM FLUCTUATIONS | PHYSICS, PARTICLES & FIELDS | Mathematical analysis | Small scale | Fluctuation | Cosmology | Scalars | Evolution | Entropy | Perturbation | Curvature | AMPLIFICATION | COSMOLOGY | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY | SCALAR FIELDS | FLUCTUATIONS | PERTURBATION THEORY | SCALE INVARIANCE | GRAVITATION | AMPLITUDES | ENTROPY

Journal Article

Physical Review D, ISSN 2470-0010, 04/2016, Volume 93, Issue 8

Motivated by apparent persistent large scale anomalies in the cosmic microwave background we study the influence of fermionic degrees of freedom on the...

RENORMALIZATION-GROUP | PRIMORDIAL FLUCTUATIONS | ENERGY | QUANTUM BROWNIAN-MOTION | GENERAL ENVIRONMENT | SITTER SPACE | FIELD | ASTRONOMY & ASTROPHYSICS | PROBE WMAP OBSERVATIONS | OPERATOR PRODUCT EXPANSION | EXPECTATION VALUE FORMALISM | PHYSICS, PARTICLES & FIELDS | Scale invariance | Gravitation | Degrees of freedom | Mathematical analysis | Fluctuation | Texts | Scalars | Formulas (mathematics)

RENORMALIZATION-GROUP | PRIMORDIAL FLUCTUATIONS | ENERGY | QUANTUM BROWNIAN-MOTION | GENERAL ENVIRONMENT | SITTER SPACE | FIELD | ASTRONOMY & ASTROPHYSICS | PROBE WMAP OBSERVATIONS | OPERATOR PRODUCT EXPANSION | EXPECTATION VALUE FORMALISM | PHYSICS, PARTICLES & FIELDS | Scale invariance | Gravitation | Degrees of freedom | Mathematical analysis | Fluctuation | Texts | Scalars | Formulas (mathematics)

Journal Article

The Astrophysical Journal Supplement Series, ISSN 0067-0049, 01/2010, Volume 186, Issue 1, pp. 10 - 47

This paper provides a detailed description of the data reduction and analysis procedures that have been employed in our previous studies of spatial fluctuation...

Astrophysics | Early universe | Cosmology: observations | Diffuse radiation | POPULATION-III STARS | diffuse radiation | EXPERIMENT SEARCH | LIGHT | 1ST STARS | ALL-SKY SURVEY | PRIMORDIAL STARS | early universe | SPACE-TELESCOPE | ASTRONOMY & ASTROPHYSICS | CONSTRAINTS | cosmology: observations | COBE DIRBE MAPS | EMISSION

Astrophysics | Early universe | Cosmology: observations | Diffuse radiation | POPULATION-III STARS | diffuse radiation | EXPERIMENT SEARCH | LIGHT | 1ST STARS | ALL-SKY SURVEY | PRIMORDIAL STARS | early universe | SPACE-TELESCOPE | ASTRONOMY & ASTROPHYSICS | CONSTRAINTS | cosmology: observations | COBE DIRBE MAPS | EMISSION

Journal Article