4.5 Article

Accelerating universe via entropic models

Related references

Note: Only part of the references are listed.
Article Physics, Multidisciplinary

Entropic cosmology for Renyi entropy

Muhammad Naeem et al.

Summary: In entropic cosmology, the consideration of various forms of entropy on the universe's horizon is important. By deriving the entropic force term and using different entropy formulas, the modified Friedmann, acceleration, and continuity equations in entropic cosmology are obtained. Surprisingly, both the Renyi entropy and the standard ΛCDM model predict the accelerated expansion of the universe. Furthermore, when combining the Renyi and Bekenstein models, a uniform acceleration of the universe, similar to dark energy, is observed.

EUROPEAN PHYSICAL JOURNAL PLUS (2022)

Article Physics, Particles & Fields

Analytic critical points of charged Renyi entropies from hyperbolic black holes

Jie Ren

Summary: We analytically study phase transitions of holographic charged Renyi entropies in two gravitational systems dual to the N = 4 super-Yang-Mills theory at finite density and zero temperature. The first system is the Reissner-Nordstrom-AdS(5) black hole, which has finite entropy at zero temperature. The second system is a charged dilatonic black hole in AdS(5), which has zero entropy at zero temperature. Hyperbolic black holes are employed to calculate the Renyi entropies with the entangling surface being a sphere. We perturb each system by a charged scalar field, and look for a zero mode signaling the instability of the extremal hyperbolic black hole. Zero modes as well as the leading order of the full retarded Green's function are analytically solved for both systems, in contrast to previous studies in which only the IR (near horizon) instability was analytically treated.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

Article Astronomy & Astrophysics

Area-law versus Renyi and Tsallis black hole entropies

Shin'ichi Nojiri et al.

Summary: The Renyi and Tsallis entropies are discussed as potential alternatives to the Bekenstein-Hawking area-law entropy, with the importance of maintaining consistency with the notions of Hawking temperature and thermodynamical energy noted. The study also explores the possibility of relating the Renyi and Tsallis entropies to the quantum gravity corrected Bekenstein-Hawking entropy.

PHYSICAL REVIEW D (2021)

Article Astronomy & Astrophysics

The area of a rough black hole

John D. Barrow

PHYSICS LETTERS B (2020)

Article Physics, Multidisciplinary

Barrow's black hole entropy and the equipartition theorem

Everton M. C. Abreu et al.

Article Astronomy & Astrophysics

Generalized entropy formalism and a new holographic dark energy model

A. Sayahian Jahromi et al.

PHYSICS LETTERS B (2018)

Article Physics, Particles & Fields

Modified cosmology through nonextensive horizon thermodynamics

Andreas Lymperis et al.

EUROPEAN PHYSICAL JOURNAL C (2018)

Article Astronomy & Astrophysics

Planck 2015 results XIII. Cosmological parameters

P. A. R. Ade et al.

ASTRONOMY & ASTROPHYSICS (2016)

Article Astronomy & Astrophysics

Is ΛCDM an effective CCDM cosmologdy?

J. A. S. Lima et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2016)

Article Astronomy & Astrophysics

Planck 2015 results XIII. Cosmological parameters

P. A. R. Ade et al.

ASTRONOMY & ASTROPHYSICS (2016)

Article Astronomy & Astrophysics

Emergence of space and cosmic evolution based on entropic force

Fei-Quan Tu et al.

GENERAL RELATIVITY AND GRAVITATION (2015)

Article Astronomy & Astrophysics

Modified Hawking temperature and entropic force: A prescription in FRW model

Saugata Mitra et al.

MODERN PHYSICS LETTERS A (2015)

Article Astronomy & Astrophysics

Emergent gravity paradigm: Recent progress

T. Padmanabhan

MODERN PHYSICS LETTERS A (2015)

Article Astronomy & Astrophysics

Cosmological model from emergence of space

Zi-Liang Wang et al.

PHYSICAL REVIEW D (2015)

Article Astronomy & Astrophysics

Cosmic microwave background radiation temperature in a dissipative universe

Nobuyoshi Komatsu et al.

PHYSICAL REVIEW D (2015)

Article Astronomy & Astrophysics

Thermodynamical interpretation of the geometrical variables associated with null surfaces

Sumanta Chakraborty et al.

PHYSICAL REVIEW D (2015)

Article Astronomy & Astrophysics

Evolution of the universe in entropic cosmologies via different formulations

Nobuyoshi Komatsu et al.

PHYSICAL REVIEW D (2014)

Article Physics, Particles & Fields

Black hole thermodynamical entropy

Constantino Tsallis et al.

EUROPEAN PHYSICAL JOURNAL C (2013)

Article Astronomy & Astrophysics

Non-adiabatic-like accelerated expansion of the late universe in entropic cosmology

Nobuyoshi Komatsu et al.

PHYSICAL REVIEW D (2013)

Article Astronomy & Astrophysics

Entropy evolution of universes with initial and final de Sitter eras

Jose Pedro Mimoso et al.

PHYSICAL REVIEW D (2013)

Article Astronomy & Astrophysics

Friedmann equations in braneworld scenarios from emergence of cosmic space

A. Sheykhi et al.

PHYSICS LETTERS B (2013)

Review Astronomy & Astrophysics

Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests

Kazuharu Bamba et al.

ASTROPHYSICS AND SPACE SCIENCE (2012)

Article Physics, Nuclear

ENTROPIC INFLATION

Damien A. Easson et al.

INTERNATIONAL JOURNAL OF MODERN PHYSICS A (2012)

Article Astronomy & Astrophysics

HAWKING RADIATION AS A MECHANISM FOR INFLATION

Sujoy Kumar Modak et al.

INTERNATIONAL JOURNAL OF MODERN PHYSICS D (2012)

Article Astronomy & Astrophysics

Inflation with a graceful exit and entrance driven by Hawking radiation

Sujoy Kumar Modak et al.

PHYSICAL REVIEW D (2012)

Article Astronomy & Astrophysics

Emergent perspective of gravity and dark energy

T. Padmanabhan

RESEARCH IN ASTRONOMY AND ASTROPHYSICS (2012)

Article Astronomy & Astrophysics

Constraining entropic cosmology

Tomi S. Koivisto et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2011)

Article Physics, Multidisciplinary

New Solution of the Cosmological Constant Problems

John D. Barrow et al.

PHYSICAL REVIEW LETTERS (2011)

Article Astronomy & Astrophysics

Entropic accelerating universe

Damien A. Easson et al.

PHYSICS LETTERS B (2011)

Article Physics, Particles & Fields

On the origin of gravity and the laws of Newton

Erik Verlinde

JOURNAL OF HIGH ENERGY PHYSICS (2011)

Article Astronomy & Astrophysics

EQUIPARTITION OF ENERGY IN THE HORIZON DEGREES OF FREEDOM AND THE EMERGENCE OF GRAVITY

T. Padmanabhan

MODERN PHYSICS LETTERS A (2010)

Article Astronomy & Astrophysics

Entropic corrections to Friedmann equations

Ahmad Sheykhi

PHYSICAL REVIEW D (2010)

Article Physics, Fluids & Plasmas

Statistical mechanics in the context of special relativity. II.

G Kaniadakis

PHYSICAL REVIEW E (2005)

Review Physics, Multidisciplinary

The holographic principle

R Bousso

REVIEWS OF MODERN PHYSICS (2002)