Theoretical and Mathematical Physics(Russian Federation), ISSN 0040-5779, 05/2017, Volume 191, Issue 2, pp. 661 - 668

The assumption that the universe is homogeneous and isotropic is the basis for the majority of modern cosmological models. We give an example of a metric all...

homogeneous isotropic universe | cosmology | SPACE | NONSTATIC LINE ELEMENT | ENERGY | PHYSICS, MULTIDISCIPLINARY | CURVATURE | PHYSICS, MATHEMATICAL | 2ND-ORDER ELLIPTIC EQUATION | UNIVERSE | WORLD

homogeneous isotropic universe | cosmology | SPACE | NONSTATIC LINE ELEMENT | ENERGY | PHYSICS, MULTIDISCIPLINARY | CURVATURE | PHYSICS, MATHEMATICAL | 2ND-ORDER ELLIPTIC EQUATION | UNIVERSE | WORLD

Journal Article

Pramana, ISSN 0304-4289, 1/2017, Volume 88, Issue 1, pp. 1 - 6

The present study deals with hypersurface-homogeneous cosmological models with anisotropic dark energy in Saez–Ballester theory of gravitation. Exact solutions...

accelerating Universe | Astrophysics and Astroparticles | Hypersurface-homogeneous models | Physics, general | dark energy | Saez–Ballester theory | Physics | Astronomy, Observations and Techniques | Accelerating Universe | Dark energy | Saez-Ballester theory | EQUATION-OF-STATE | SYMMETRY | PHYSICS, MULTIDISCIPLINARY | COMPONENT | VISCOUS-FLUID | UNIVERSE | Models | Anisotropy | Analysis | Gravity

accelerating Universe | Astrophysics and Astroparticles | Hypersurface-homogeneous models | Physics, general | dark energy | Saez–Ballester theory | Physics | Astronomy, Observations and Techniques | Accelerating Universe | Dark energy | Saez-Ballester theory | EQUATION-OF-STATE | SYMMETRY | PHYSICS, MULTIDISCIPLINARY | COMPONENT | VISCOUS-FLUID | UNIVERSE | Models | Anisotropy | Analysis | Gravity

Journal Article

Chaos, Solitons and Fractals: the interdisciplinary journal of Nonlinear Science, and Nonequilibrium and Complex Phenomena, ISSN 0960-0779, 03/2013, Volume 48, Issue 1, pp. 12 - 21

Many works study the integrability of the Bianchi class A cosmologies with = 1, where is the ratio between the pressure and the energy density of the matter....

MATHEMATICS, INTERDISCIPLINARY APPLICATIONS | PHYSICS, MULTIDISCIPLINARY | PHYSICS, MATHEMATICAL | DYNAMICAL-SYSTEMS

MATHEMATICS, INTERDISCIPLINARY APPLICATIONS | PHYSICS, MULTIDISCIPLINARY | PHYSICS, MATHEMATICAL | DYNAMICAL-SYSTEMS

Journal Article

Journal of Astrophysics and Astronomy, ISSN 0250-6335, 6/2019, Volume 40, Issue 3, pp. 1 - 12

The main motive of this investigation is to study the behavior of cosmological model in the presence of matter and a modified holographic Ricci dark energy for...

modified holographic dark energy | Astrophysics and Astroparticles | Hypersurface-homogeneous space-time | hybrid expansion law | Saez–Ballester theory | Physics | Astronomy, Observations and Techniques | SCALAR-TENSOR THEORY | Saez-Ballester theory | PROBE WMAP OBSERVATIONS | DOMAIN-WALLS | SUPERNOVAE | BIANCHI TYPE-I | DECELERATION | ASTRONOMY & ASTROPHYSICS | CONSTRAINTS | CHAPLYGIN-GAS | STATEFINDER | UNIVERSE | Dark energy | Laws, regulations and rules | Analysis | Gravity | Gravitation | Hyperspaces | Tensors | Astronomical models | Cosmology | Expansion

modified holographic dark energy | Astrophysics and Astroparticles | Hypersurface-homogeneous space-time | hybrid expansion law | Saez–Ballester theory | Physics | Astronomy, Observations and Techniques | SCALAR-TENSOR THEORY | Saez-Ballester theory | PROBE WMAP OBSERVATIONS | DOMAIN-WALLS | SUPERNOVAE | BIANCHI TYPE-I | DECELERATION | ASTRONOMY & ASTROPHYSICS | CONSTRAINTS | CHAPLYGIN-GAS | STATEFINDER | UNIVERSE | Dark energy | Laws, regulations and rules | Analysis | Gravity | Gravitation | Hyperspaces | Tensors | Astronomical models | Cosmology | Expansion

Journal Article

Iranian Journal of Science and Technology, Transactions A: Science, ISSN 1028-6276, 9/2017, Volume 41, Issue 3, pp. 809 - 817

This article deals with the study of particle creation and bulk viscous stress for the hypersurface-homogeneous cosmological model in the context of general...

Engineering | Life Sciences, general | Chemistry/Food Science, general | Materials Science, general | General relativity | Earth Sciences, general | Engineering, general | Physics, general | Particle creation | Hypersurface-homogeneous space–time | THERMODYNAMICS | EARLY UNIVERSE | FLUID | Hypersurface-homogeneous space-time | MULTIDISCIPLINARY SCIENCES | MATTER CREATION | VISCOSITY | Viscosity | Hyperspaces | Vegetables | Spacetime | Relativity | Astronomical models | Cosmology | Evolution | Universe | Theory of relativity | Models

Engineering | Life Sciences, general | Chemistry/Food Science, general | Materials Science, general | General relativity | Earth Sciences, general | Engineering, general | Physics, general | Particle creation | Hypersurface-homogeneous space–time | THERMODYNAMICS | EARLY UNIVERSE | FLUID | Hypersurface-homogeneous space-time | MULTIDISCIPLINARY SCIENCES | MATTER CREATION | VISCOSITY | Viscosity | Hyperspaces | Vegetables | Spacetime | Relativity | Astronomical models | Cosmology | Evolution | Universe | Theory of relativity | Models

Journal Article

Astrophysics, ISSN 0571-7256, 12/2016, Volume 59, Issue 4, pp. 525 - 539

We study a hypersurface homogeneous space-time in the framework of the f (R, T) theory of gravitation in the presence of a perfect fluid. Exact solutions of...

perfect fluid | Astrophysics and Astroparticles | Hypersurface homogeneous | Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) | f (R, T) gravity | Physics | Astronomy, Astrophysics and Cosmology | Astronomy, Observations and Techniques | F(R | GENERAL-RELATIVITY | ISOTROPY | f(R,T) gravity | ASTRONOMY & ASTROPHYSICS | T) GRAVITY | SUPERNOVAE | UNIVERSE | Cosmology | Models | Research | Gravity | Geometry | Gravitation | Computational fluid dynamics | Mathematical analysis | Scalars | Universe | Mathematical models

perfect fluid | Astrophysics and Astroparticles | Hypersurface homogeneous | Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) | f (R, T) gravity | Physics | Astronomy, Astrophysics and Cosmology | Astronomy, Observations and Techniques | F(R | GENERAL-RELATIVITY | ISOTROPY | f(R,T) gravity | ASTRONOMY & ASTROPHYSICS | T) GRAVITY | SUPERNOVAE | UNIVERSE | Cosmology | Models | Research | Gravity | Geometry | Gravitation | Computational fluid dynamics | Mathematical analysis | Scalars | Universe | Mathematical models

Journal Article

Journal of Dynamical Systems and Geometric Theories, ISSN 1726-037X, 07/2014, Volume 12, Issue 2, pp. 93 - 101

We have presented exact solutions of Einstein field equations for a hypersurface-homogeneous space time in the presence of a perfect fluid with constant EoS...

EoS parameter | Perfect fluid | 83D05 | 883F05 | Hypersurface Homogeneous Cosmological Model

EoS parameter | Perfect fluid | 83D05 | 883F05 | Hypersurface Homogeneous Cosmological Model

Journal Article

8.
Full Text
Bulk viscous fluid hypersurface-homogeneous cosmological models with time varying G and I

ASTROPHYSICS AND SPACE SCIENCE, ISSN 0004-640X, 11/2010, Volume 330, Issue 1, pp. 151 - 156

Hypersurface-homogeneous cosmological models containing a bulk viscous fluid with time varying G and I > have been presented. We have shown that the field...

Bulk viscosity | GENERAL-RELATIVITY | CONSTANT | SUPERNOVAE | LAMBDA | VARIABLE-G | Variable G and Lambda | ASTRONOMY & ASTROPHYSICS | EXPANSION | GRAVITATION | CREATION | Hypersurface-homogeneous | SPACE-TIMES | UNIVERSE

Bulk viscosity | GENERAL-RELATIVITY | CONSTANT | SUPERNOVAE | LAMBDA | VARIABLE-G | Variable G and Lambda | ASTRONOMY & ASTROPHYSICS | EXPANSION | GRAVITATION | CREATION | Hypersurface-homogeneous | SPACE-TIMES | UNIVERSE

Journal Article

9.
Full Text
Bulk viscous fluid hypersurface–homogeneous cosmological models with time varying G and Λ

Astrophysics and Space Science, ISSN 0004-640X, 11/2010, Volume 330, Issue 1, pp. 151 - 156

Hypersurface–homogeneous cosmological models containing a bulk viscous fluid with time varying G and Λ have been presented. We have shown that the field...

Bulk viscosity | Hypersurface–homogeneous | Physics | Variable G and Λ | Astronomy, Observations and Techniques | Hypersurface-homogeneous

Bulk viscosity | Hypersurface–homogeneous | Physics | Variable G and Λ | Astronomy, Observations and Techniques | Hypersurface-homogeneous

Journal Article

International Journal of Theoretical Physics, ISSN 0020-7748, 5/2012, Volume 51, Issue 5, pp. 1572 - 1578

The paper presents an exact solution of spatially homogeneous and anisotropic cylindrically symmetric cosmological model in Barber’s second self-creation...

Barber second self creation theory | Spatially homogeneous | Cosmological model | Theoretical, Mathematical and Computational Physics | Anisotropic | Quantum Physics | Physics, general | Cylindrically symmetric | Physics | Elementary Particles, Quantum Field Theory | PHYSICS, MULTIDISCIPLINARY | Models | Anisotropy | Analysis | Gravity

Barber second self creation theory | Spatially homogeneous | Cosmological model | Theoretical, Mathematical and Computational Physics | Anisotropic | Quantum Physics | Physics, general | Cylindrically symmetric | Physics | Elementary Particles, Quantum Field Theory | PHYSICS, MULTIDISCIPLINARY | Models | Anisotropy | Analysis | Gravity

Journal Article

International Journal of Theoretical Physics, ISSN 0020-7748, 10/2012, Volume 51, Issue 10, pp. 3311 - 3317

Adding the cosmological term, which is assumed to be variable in Brans-Dicke theory we have discussed about a spatially homogeneous and anisotropic...

Bianchi type-I | Spatially homogeneous | Cosmological model | Theoretical, Mathematical and Computational Physics | Anisotropic | Quantum Physics | Physics, general | Brans-Dicke theory | Physics | Elementary Particles, Quantum Field Theory | INVARIANCE | PHYSICS, MULTIDISCIPLINARY | GRAVITATION | CONSTANT | MACHS PRINCIPLE

Bianchi type-I | Spatially homogeneous | Cosmological model | Theoretical, Mathematical and Computational Physics | Anisotropic | Quantum Physics | Physics, general | Brans-Dicke theory | Physics | Elementary Particles, Quantum Field Theory | INVARIANCE | PHYSICS, MULTIDISCIPLINARY | GRAVITATION | CONSTANT | MACHS PRINCIPLE

Journal Article

Romanian Reports of Physics, ISSN 1221-146X, 2012, Volume 57, Issue 3-4, pp. 761 - 778

A new class of exact solutions of Einstein's modified field equations in inhomogeneous space-time for bulk viscous fluid distribution with electromagnetic...

Bulk viscosity | Inhomogeneous universe | Lyra's manifold | Magnetic field | ACCELERATING UNIVERSE | magnetic field | ISOTROPIC HOMOGENEOUS UNIVERSE | SCALAR-TENSOR THEORY | MAGNETIC-FIELDS | GENERAL-RELATIVITY | PHYSICS, MULTIDISCIPLINARY | INTRINSIC SYMMETRIES | VARYING-LAMBDA | bulk viscosity | CYLINDRICALLY SYMMETRIC UNIVERSE | Inhomogeneous Universe | CONSTANT DECELERATION PARAMETER | CONFORMALLY FLAT SLICES

Bulk viscosity | Inhomogeneous universe | Lyra's manifold | Magnetic field | ACCELERATING UNIVERSE | magnetic field | ISOTROPIC HOMOGENEOUS UNIVERSE | SCALAR-TENSOR THEORY | MAGNETIC-FIELDS | GENERAL-RELATIVITY | PHYSICS, MULTIDISCIPLINARY | INTRINSIC SYMMETRIES | VARYING-LAMBDA | bulk viscosity | CYLINDRICALLY SYMMETRIC UNIVERSE | Inhomogeneous Universe | CONSTANT DECELERATION PARAMETER | CONFORMALLY FLAT SLICES

Journal Article

13.
Anisotropic Bianchi type-I cosmological model for viscous fluid in a modified brans-dicke cosmology

ARPN Journal of Engineering and Applied Sciences, 2014, Volume 9, Issue 9, pp. 1615 - 1620

Journal Article

Pramana - Journal of Physics, ISSN 0304-4289, 05/2009, Volume 72, Issue 5, pp. 787 - 796

Bianchi Type V massive string cosmological models with free gravitational field of Petrov Type degenerate in the presence of magnetic field with variable...

Bianchi V | Magnetized | String dust | Petrov D | MATTER | GENERAL-RELATIVITY | SPACE-TIME | PHYSICS, MULTIDISCIPLINARY | string dust | ELECTROMAGNETIC-FIELDS | HOMOGENEOUS COSMOLOGIES | magnetized | Electromagnetism | Permeability | Magnetic fields | Analysis

Bianchi V | Magnetized | String dust | Petrov D | MATTER | GENERAL-RELATIVITY | SPACE-TIME | PHYSICS, MULTIDISCIPLINARY | string dust | ELECTROMAGNETIC-FIELDS | HOMOGENEOUS COSMOLOGIES | magnetized | Electromagnetism | Permeability | Magnetic fields | Analysis

Journal Article

Physical Review Letters, ISSN 0031-9007, 09/2016, Volume 117, Issue 13, p. 131302

A fundamental assumption in the standard model of cosmology is that the Universe is isotropic on large scales. Breaking this assumption leads to a set of...

ROTATION | SHEAR | MAPS | PHYSICS, MULTIDISCIPLINARY | BIANCHI-VIIH | HOMOGENEOUS COSMOLOGICAL MODELS | POLARIZATION | EFFICIENT | WMAP | Isotropy | Degrees of freedom | Anisotropy | Mathematical analysis | Cosmic microwave background | Cosmology | Universe | Mathematical models

ROTATION | SHEAR | MAPS | PHYSICS, MULTIDISCIPLINARY | BIANCHI-VIIH | HOMOGENEOUS COSMOLOGICAL MODELS | POLARIZATION | EFFICIENT | WMAP | Isotropy | Degrees of freedom | Anisotropy | Mathematical analysis | Cosmic microwave background | Cosmology | Universe | Mathematical models

Journal Article

Astrophysics and Space Science, ISSN 0004-640X, 12/2008, Volume 318, Issue 3, pp. 237 - 242

Bianchi Type III massive string cosmological model for perfect fluid distribution in the presence of magnetic field, is investigated. It is assumed that the...

Cosmological | Magnetized | Bianchi III | Physics | Astronomy | Massive string | FIELDS | DUST | SPACE-TIME | BULK VISCOUS-FLUID | ASTRONOMY & ASTROPHYSICS | SINGULARITY | SPATIALLY HOMOGENEOUS COSMOLOGIES | VISCOSITY | Electromagnetism | Universities and colleges | Magnetic fields | Analysis | Cosmology | Evolution | Universe | Models | Astrophysics

Cosmological | Magnetized | Bianchi III | Physics | Astronomy | Massive string | FIELDS | DUST | SPACE-TIME | BULK VISCOUS-FLUID | ASTRONOMY & ASTROPHYSICS | SINGULARITY | SPATIALLY HOMOGENEOUS COSMOLOGIES | VISCOSITY | Electromagnetism | Universities and colleges | Magnetic fields | Analysis | Cosmology | Evolution | Universe | Models | Astrophysics

Journal Article

Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 11/2007, Volume 2007, Issue 11, pp. 005 - 5

We extend the standard theory of cosmological perturbations to homogeneous but anisotropic universes. We present an exhaustive computation for the case of a...

Cosmological perturbation theory | CMBR theory | Inflation | POWER-SPECTRUM | ANOMALIES | ISOTROPY | cosmological perturbation theory | inflation | WMAP DATA | FLUCTUATIONS | ASTRONOMY & ASTROPHYSICS | COVARIANT | SCALES | HOMOGENEOUS COSMOLOGICAL MODELS | PROBE | UNIVERSE | PHYSICS, PARTICLES & FIELDS

Cosmological perturbation theory | CMBR theory | Inflation | POWER-SPECTRUM | ANOMALIES | ISOTROPY | cosmological perturbation theory | inflation | WMAP DATA | FLUCTUATIONS | ASTRONOMY & ASTROPHYSICS | COVARIANT | SCALES | HOMOGENEOUS COSMOLOGICAL MODELS | PROBE | UNIVERSE | PHYSICS, PARTICLES & FIELDS

Journal Article

Classical and Quantum Gravity, ISSN 0264-9381, 04/2012, Volume 29, Issue 8, pp. 83001 - 1-083001-25

We review an inflationary scenario with the anisotropic expansion rate. An anisotropic inflationary universe can be realized by a vector field coupled with an...

PERTURBATIONS | PHYSICS, MULTIDISCIPLINARY | FIELD | ASTRONOMY & ASTROPHYSICS | PROBE WMAP OBSERVATIONS | HOMOGENEOUS COSMOLOGICAL MODELS | NO-HAIR THEOREM | UNIVERSE | PHYSICS, PARTICLES & FIELDS | Inflation | Anisotropy | Fluctuation | Cosmic microwave background | Universe | Fields (mathematics) | Formalism | Quantum gravity

PERTURBATIONS | PHYSICS, MULTIDISCIPLINARY | FIELD | ASTRONOMY & ASTROPHYSICS | PROBE WMAP OBSERVATIONS | HOMOGENEOUS COSMOLOGICAL MODELS | NO-HAIR THEOREM | UNIVERSE | PHYSICS, PARTICLES & FIELDS | Inflation | Anisotropy | Fluctuation | Cosmic microwave background | Universe | Fields (mathematics) | Formalism | Quantum gravity

Journal Article

Classical and Quantum Gravity, ISSN 0264-9381, 04/2001, Volume 18, Issue 8, pp. 1405 - 1420

We investigate a class of spatially compact inhomogeneous spacetimes. Motivated by Thurston's geometrization conjecture, we give a formulation for constructing...

SPATIAL TOPOLOGY | PHYSICS, MULTIDISCIPLINARY | COMPACT HOMOGENEOUS UNIVERSES | DYNAMICS | 3-MANIFOLDS | SPACE-TIMES | JUNCTION | BUBBLES | Physics - General Relativity and Quantum Cosmology

SPATIAL TOPOLOGY | PHYSICS, MULTIDISCIPLINARY | COMPACT HOMOGENEOUS UNIVERSES | DYNAMICS | 3-MANIFOLDS | SPACE-TIMES | JUNCTION | BUBBLES | Physics - General Relativity and Quantum Cosmology

Journal Article

Journal of Mathematical Physics, ISSN 0022-2488, 12/2004, Volume 45, Issue 12, pp. 4896 - 4919

To analyze linear field equations on a locally homogeneous space–time by means of separation of variables, it is necessary to set up appropriate harmonics...

3-MANIFOLDS | EQUATIONS | PERTURBATIONS | PHYSICS, MATHEMATICAL | STABILITY | COMPACT HOMOGENEOUS UNIVERSES

3-MANIFOLDS | EQUATIONS | PERTURBATIONS | PHYSICS, MATHEMATICAL | STABILITY | COMPACT HOMOGENEOUS UNIVERSES

Journal Article

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