Works about FRIEDMANN equations

Results: 649

Agegraphic dark energy with fractional entropy: Implications for cosmological evolution.

Published in:

General Relativity & Gravitation, 2025, v. 57, n. 4, p. 1, doi. 10.1007/s10714-025-03401-5

By:

Naeem, Muhammad;
Bibi, Aysha

Publication type:

Article

Reference Level of the Vacuum Energy Density of the Universe and Astrophysical Data.

Published in:

Fortschritte der Physik / Progress of Physics, 2020, v. 68, n. 7, p. 1, doi. 10.1002/prop.202000047

By:

Haridasu, Balakrishna S.;
Cherkas, Sergey L.;
Kalashnikov, Vladimir L.

Publication type:

Article

Polchinski's equation for group field theory.

Published in:

Fortschritte der Physik / Progress of Physics, 2014, v. 62, n. 9/10, p. 855, doi. 10.1002/prop.201400043

By:

Krajewski, Thomas;
Toriumi, Reiko

Publication type:

Article

Time-reparametrization invariance and Hamilton-Jacobi approach to the cosmological σ-model.

Published in:

Fortschritte der Physik / Progress of Physics, 2014, v. 62, n. 7, p. 543, doi. 10.1002/prop.201400008

By:

van Holten, J.W.;
Kerner, R.

Publication type:

Article

A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution.

Published in:

Astronomy (2674-0346), 2024, v. 3, n. 1, p. 43, doi. 10.3390/astronomy3010005

By:

Nyagisera, Robert Nyakundi;
Wamalwa, Dismas;
Rapando, Bernard;
Awino, Celline;
Mageto, Maxwell

Publication type:

Article

Nature of entropy in a scalar-tensor theory of gravity.

Published in:

Turkish Journal of Physics, 2018, v. 42, n. 6, p. 621, doi. 10.3906/fiz-1712-12

By:

SIĞINÇ, Onur;
SALTI, Mustafa;
YANAR, Hilmi;
AYDOĞDU, Oktay

Publication type:

Article

Oscillating Cosmological Force Modifies Newtonian Dynamics.

Published in:

Galaxies (2075-4434), 2020, v. 8, n. 2, p. 45, doi. 10.3390/galaxies8020045

By:

Smolyaninov, Igor I.

Publication type:

Article

The Flatness Problem and the Variable Physical Constants.

Published in:

Galaxies (2075-4434), 2019, v. 7, n. 3, p. 77, doi. 10.3390/galaxies7030077

By:

Gupta, Rajendra P.

Publication type:

Article

The Hunt for Primordial Interactions in the Large-Scale Structures of the Universe.

Published in:

Galaxies (2075-4434), 2019, v. 7, n. 3, p. 71, doi. 10.3390/galaxies7030071

By:

Biagetti, Matteo

Publication type:

Article

Determining Evolution of Cosmological Constant, Gravitational Constant and Speed of Light Using Nonadiabatic Cosmological Model and LLR Findings.

Published in:

Galaxies (2075-4434), 2019, v. 7, n. 3, p. 67, doi. 10.3390/galaxies7030067

By:

Gupta, Rajendra P.

Publication type:

Article

Wavepacket Evolution in Unimodular Quantum Cosmology.

Published in:

Galaxies (2075-4434), 2018, v. 6, n. 1, p. 8, doi. 10.3390/galaxies6010008

By:

Riahi, Natascha

Publication type:

Article

A Non-Polynomial Gravity Formulation for Loop Quantum Cosmology Bounce.

Published in:

Galaxies (2075-4434), 2017, v. 5, n. 3, p. 51, doi. 10.3390/galaxies5030051

By:

Chinaglia, Stefano;
Colléaux, Aimeric;
Zerbini, Sergio

Publication type:

Article

Thermodynamics of Brans–Dicke–BTZ black holes coupled to conformal-invariant electrodynamics.

Published in:

Progress of Theoretical & Experimental Physics: PTEP, 2023, v. 2023, n. 5, p. 1, doi. 10.1093/ptep/ptad053

By:

Dehghani, M

Publication type:

Article

possible solution to the helium anomaly of EMPRESS VIII by cuscuton gravity theory.

Published in:

Progress of Theoretical & Experimental Physics: PTEP, 2022, v. 2022, n. 9, p. 1, doi. 10.1093/ptep/ptac114

By:

Kohri, Kazunori;
Maeda, Kei-ichi

Publication type:

Article

Oscillating 4-Polytopal Universe in Regge Calculus.

Published in:

Progress of Theoretical & Experimental Physics: PTEP, 2021, v. 2021, n. 8, p. 1, doi. 10.1093/ptep/ptab079

By:

Tsuda, Ren;
Fujiwara, Takanori

Publication type:

Article

PERIODIC ORBITS FOR A GENERALIZED FRIEDMANN-ROBERTSON-WALKER HAMILTONIAN SYSTEM IN DIMENSION 6.

Published in:

Discrete & Continuous Dynamical Systems - Series S, 2015, v. 8, n. 6, p. 1165, doi. 10.3934/dcdss.2015.8.1165

By:

LEMBARKI, FATIMA EZZAHRA;
LLIBRE, JAUME

Publication type:

Article

Non-Riemannian cosmology: The role of shear hypermomentum.

Published in:

International Journal of Geometric Methods in Modern Physics, 2021, v. 18, p. N.PAG, doi. 10.1142/S0219887821501292

By:

Iosifidis, Damianos

Publication type:

Article

Non-vacuum relativistic extensions of MOND using metric theories of gravity with curvature–matter couplings and their applications to the accelerated expansion of the universe without dark components.

Published in:

International Journal of Geometric Methods in Modern Physics, 2021, v. 18, n. 6, p. N.PAG, doi. 10.1142/S0219887821500869

By:

Barrientos, Ernesto;
Bernal, Tula;
Mendoza, Sergio

Publication type:

Article

Cosmological inflationary studying around the type IV singularity within f(T) gravity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 14, p. N.PAG, doi. 10.1142/S0219887820501959

By:

Ganiou, M. G.;
Houndjo, M. J. S.;
Abadji, H. F.;
Tossa, J.

Publication type:

Article

Emergent classical universes from initial quantum states in a tomographical description.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 11, p. N.PAG, doi. 10.1142/S0219887820501674

By:

Stornaiolo, Cosimo

Publication type:

Article

Analysis of observational parameters and stability in extended teleparallel gravity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 11, p. N.PAG, doi. 10.1142/S0219887820501583

By:

Shaikh, A. Y.;
Mishra, B.

Publication type:

Article

Some Bianchi type-V accelerating cosmological models in f(R,T)=f1(R)+f2(T) formalism.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 10, p. N.PAG, doi. 10.1142/S0219887820501595

By:

Bhardwaj, Vinod Kumar;
Yadav, Anil Kumar

Publication type:

Article

Quadratically varying deceleration parameter in f(R,T) gravity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 10, p. N.PAG, doi. 10.1142/S0219887820300032

By:

Tiwari, Rishi Kumar;
Sofuoğlu, Değer

Publication type:

Article

Viability of Bianchi type V universe in f(R,T)=f1(R)+f2(R)f3(T) gravity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 7, p. N.PAG, doi. 10.1142/S021988782050111X

By:

Sharma, Lokesh Kumar;
Singh, Benoy Kumar;
Yadav, Anil Kumar

Publication type:

Article

Observational constraints of emergent universe in f(R,T) gravity with bulk viscosity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 7, p. N.PAG, doi. 10.1142/S0219887820501029

By:

Debnath, Partha Sarathi;
Paul, Bikash Chandra

Publication type:

Article

Modified holographic energy density-driven inflation and some cosmological outcomes.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 5, p. N.PAG, doi. 10.1142/S0219887820500668

By:

Chakraborty, Gargee;
Chattopadhyay, Surajit

Publication type:

Article

Universe with quadratic equation of state: A dynamical systems perspective.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 5, p. N.PAG, doi. 10.1142/S0219887820500644

By:

Raushan, Rakesh;
Singh, Ashutosh;
Chaubey, R.;
Singh, T.

Publication type:

Article

Thermodynamical aspects of relativistic hydrodynamics in f(R,G) gravity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 3, p. N.PAG, doi. 10.1142/S0219887820500486

By:

Shekh, S. H.;
Arora, Simran;
Chirde, V. R.;
Sahoo, P. K.

Publication type:

Article

The backreaction of massive scalar field on FLRW and de Sitter spaces.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 3, p. N.PAG, doi. 10.1142/S0219887820500334

By:

Setare, M. R.;
Sahraee, M.

Publication type:

Article

Domain walls and quark matter in Bianchi type-V universe with observational constraints in F(R,T) gravity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 1, p. N.PAG, doi. 10.1142/S0219887820500140

By:

Maurya, Dinesh Chandra;
Pradhan, Anirudh;
Dixit, Archana

Publication type:

Article

Late time dynamics of f(R,T,RμνTμν) gravity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2020, v. 17, n. 1, p. N.PAG, doi. 10.1142/S0219887820500085

By:

Abchouyeh, Maryam Aghaei;
Mirza, Behrouz;
Shahidi, Parisa;
Oboudiat, Fatemeh

Publication type:

Article

Thermodynamic and observational constraints of DGP braneworld in the light of nonlinear electrodynamics.

Published in:

International Journal of Geometric Methods in Modern Physics, 2019, v. 16, n. 11, p. N.PAG, doi. 10.1142/S0219887819501731

By:

Chetry, Binod;
Dutta, Jibitesh;
Debnath, Ujjal;
Khyllep, Wompherdeiki

Publication type:

Article

Viscous accelerating universe with nonlinear and logarithmic equation of state fluid.

Published in:

International Journal of Geometric Methods in Modern Physics, 2019, v. 16, n. 10, p. N.PAG, doi. 10.1142/S0219887819501500

By:

Brevik, I.;
Makarenko, A. N.;
Timoshkin, A. V.

Publication type:

Article

Thermodynamic consequences of specific modified gravity on the apparent horizon.

Published in:

International Journal of Geometric Methods in Modern Physics, 2019, v. 16, n. 9, p. N.PAG, doi. 10.1142/S0219887819501445

By:

Jawad, Abdul;
Khan, Zoya;
Rani, Shamaila

Publication type:

Article

Vacuum quantum effects on Lie groups with bi-invariant metrics.

Published in:

International Journal of Geometric Methods in Modern Physics, 2019, v. 16, n. 8, p. N.PAG, doi. 10.1142/S0219887819501226

By:

Breev, A. I.;
Shapovalov, A. V.

Publication type:

Article

Interacting dark energy model in the brane scenario: A dynamical system analysis.

Published in:

International Journal of Geometric Methods in Modern Physics, 2019, v. 16, n. 8, p. N.PAG, doi. 10.1142/S0219887819501159

By:

Biswas, Sujay Kr.;
Chakraborty, Subenoy

Publication type:

Article

Born–Infeld-type modified gravity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2019, v. 16, n. 5, p. N.PAG, doi. 10.1142/S0219887819500701

By:

Kruglov, S. I.

Publication type:

Article

An extended theory of gravity in a modified Riemann's geometry.

Published in:

International Journal of Geometric Methods in Modern Physics, 2019, v. 16, n. 5, p. N.PAG, doi. 10.1142/S0219887819500671

By:

Hova, Hoavo;
Yang, Huanxiong;
Owusu, Samuel

Publication type:

Article

Some interactions of spherically symmetric massive scalar field with Brans–Dicke scalar field in Robertson–Walker universe.

Published in:

International Journal of Geometric Methods in Modern Physics, 2019, v. 16, n. 4, p. N.PAG, doi. 10.1142/S021988781950066X

By:

Singh, Kangujam Priyokumar;
Baruah, Rajshekhar Roy

Publication type:

Article

w=1/3 to w=−1 evolution in a Robertson–Walker space-time with constant scalar curvature.

Published in:

International Journal of Geometric Methods in Modern Physics, 2019, v. 16, n. 4, p. N.PAG, doi. 10.1142/S0219887819500610

By:

Molinari, Luca Guido;
Mantica, Carlo Alberto

Publication type:

Article

A new look at the Schrödinger equation in exact scalar field cosmology.

Published in:

International Journal of Geometric Methods in Modern Physics, 2019, v. 16, n. 2, p. N.PAG, doi. 10.1142/S0219887819500221

By:

Fomin, I. V.;
Chervon, S. V.;
Maharaj, S. D.

Publication type:

Article

Polymer quantization effects on gauge-flation.

Published in:

International Journal of Geometric Methods in Modern Physics, 2018, v. 15, n. 10, p. N.PAG, doi. 10.1142/S0219887818501694

By:

Mardaani, M.;
Nozari, K.

Publication type:

Article

Viscous generalized Chaplygin gas interacting with gravity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2017, v. 14, n. 4, p. -1, doi. 10.1142/S0219887817500517

By:

Baffou, E. H.;
Houndjo, M. J. S.;
Salako, I. G.

Publication type:

Article

Cosmology with higher-derivative matter fields.

Published in:

International Journal of Geometric Methods in Modern Physics, 2016, v. 13, n. 7, p. -1, doi. 10.1142/S0219887816501024

By:

Harko, Tiberiu;
Lobo, Francisco S. N.;
Saridakis, Emmanuel N.

Publication type:

Article

Bulk viscosity in Friedmann universe with a varying speed of light described by modified equation of state.

Published in:

International Journal of Geometric Methods in Modern Physics, 2015, v. 12, n. 10, p. -1, doi. 10.1142/S0219887815501261

By:

Khadekar, G. S.;
Ghogre, Arti

Publication type:

Article

The Friedmann cosmological models revisited as an harmonic motion and new exact solutions.

Published in:

International Journal of Geometric Methods in Modern Physics, 2014, v. 11, n. 5, p. -1, doi. 10.1142/S0219887814500509

By:

Rubio, Rafael M.;
Salamanca, Juan J.

Publication type:

Article

Accelerating cosmology in modified gravity: From convenient F(R) or string-inspired theory to bimetric F(R) gravity.

Published in:

International Journal of Geometric Methods in Modern Physics, 2014, v. 11, n. 2, p. -1, doi. 10.1142/S0219887814600068

By:

Nojiri, Shin'ichi;
Odintsov, Sergei D.

Publication type:

Article

Imprints of Barrow–Tsallis cosmology in primordial gravitational waves.

Published in:

European Physical Journal C -- Particles & Fields, 2024, v. 84, n. 10, p. 1, doi. 10.1140/epjc/s10052-024-13455-5

By:

Jizba, P.;
Lambiase, G.;
Luciano, G. G.;
Mastrototaro, L.

Publication type:

Article

Finsler–Randers–Sasaki gravity and cosmology.

Published in:

European Physical Journal C -- Particles & Fields, 2024, v. 84, n. 5, p. 1, doi. 10.1140/epjc/s10052-024-12924-1

By:

Kapsabelis, E.;
Saridakis, Emmanuel N.;
Stavrinos, P. C.

Publication type:

Article

Evolving wormhole geometry from dark matter energy density.

Published in:

European Physical Journal C -- Particles & Fields, 2024, v. 84, n. 5, p. 1, doi. 10.1140/epjc/s10052-024-12859-7

By:

Rahaman, Farook;
Choudhury, Bikramarka S.

Publication type:

Article