KantowskiSachs Bulk Viscous String Cosmological Model In Gravity With Time Varying Deceleration Parameter
f (R, T )gravity, bulk viscous fluid, cosmic string, deceleration parameter
Abstract
We propose a specially homogeneous and anisotropic Kantowski-Sachs string cosmological model with bulk viscosity in the framework of ( ) T R f , gravity by considering two cases (i) the special form and (ii) linearly varying deceleration parameter. To obtain a deterministic solution of the field equation we have been used some physical plausible condition. In this theory, cosmological model is presented in both cases. Also some important features of the models, thus obtained, have been discussed.
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Adam Riess, Alexei Filippenko, Peter Challis, Alejandro Clocchiatti, Alan Diercks, Peter Garnavich, Ron Gilliland, Craig Hogan, Saurabh Jha, Robert Kirshner, B Leibundgut, M Phillips, David Reiss, Brian Schmidt, Robert Schommer, R Smith, J Spyromilio, Christopher Stubbs, Nicholas Suntzeff, John Tonry (1998) Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant. 116(3), 1009-1038.
S Perlmutter, G Aldering, G Goldhaber, R Knop, P Nugent, P Castro, S Deustua, S Fabbro, A Goobar, D Groom, I Hook, A Kim, M Kim, J Lee, N Nunes, R Pain, C Pennypacker, R Quimby, C Lidman, R Ellis, M Irwin, R Mcmahon, P Ruiz‐lapuente, N Walton, B Schaefer, B Boyle, A Filippenko, T Matheson, A Fruchter, N Panagia, H Newberg, W Couch, The Project (1999) Measurements of Ω and Λ from 42 High‐Redshift Supernovae. 517(2), 565-586.
C Bennet, R Hill, G Hinshaw (2003) First-year Wilkinson microwave anisotropy probe (WMAP)* observations: fore-ground emission. 148, 1.
P Peebles, Bharat Ratra (2003) The cosmological constant and dark energy. 75(2), 559-606.
Varun Sahni, Alexei Starobinsky (2000) THE CASE FOR A POSITIVE COSMOLOGICAL Λ-TERM. 09(04), 373-443.
J Martin (2008) Quintessence: a mini-review. 23(17-20), 1252-1265.
Shin'ichi Nojiri, Sergei Odintsov, M Sami (2006) Dark energy cosmology from higher-order, string-inspired gravity, and its reconstruction. 74(4), 46004.
Takeshi Chiba, Takahiro Okabe, Masahide Yamaguchi (2000) Kinetically driven quintessence. 62(2), 23511.
T Padmanabhan, T Choudhury (2002) Can the clustered dark matter and the smooth dark energy arise from the same scalar field?. 66(8), 813011-813014.
M Bento, O Bertolami, A Sen (2002) Generalized Chaplygin gas, accelerated expansion, and dark-energy-matter unification. 66(4), 43507.
G Magnano, M Ferraris, M Francaviglia (1987) Nonlinear gravitational Lagrangians. 19(5), 465-479.
M Sharif, Sehrish Azeem (2012) Cosmological evolution for dark energy models in f(T) gravity. 342(2), 521-530.
M Jamil, D Momeni, R Myrzakulov (2012) Attractor solutions in f (T)cosmology. 72(3), 1-10.
Kazuharu Bamba, Mubasher Jamil, D Momeni, Ratbay Myrzakulov (2013) Generalized second law of thermodynamics in f(T) gravity with entropy corrections. 344(1), 259-267.
T Harko, F Lobo, S Nojiri, S Odintsov (2011) f(R,T) gravity. 84(2), 24020.
R Myrzakulov (2012) FRW cosmology in F(R,T) gravity. 72.
Muhammad Sharif, Muhammad Zubair (2012) Anisotropic Universe Models with Perfect Fluid and Scalar Field inf(R,T) Gravity. 81(11), 114005.
M Houndjo, Oliver Piattella (2012) RECONSTRUCTING f(R, T) GRAVITY FROM HOLOGRAPHIC DARK ENERGY. 21(03), 1250024.
F Alvarenga, M Houndjo, A Monwanou, J Chabi, Orou (2013) Testing some f(R,T) gravity models from energy conditions. 4(1), 130-139.
Mubasher Jamil, D Momeni, Muhammad Raza, Ratbay Myrzakulov (1999) Reconstruction of some cosmological models in f(R,T) cosmology. 72(4).
M Shamir, A Jhangeer, A Bhatti (2018) Exact Solutions of LRS Bianchi Type I Spacetime in f(R, T) Gravity. 104-109.
R Chaubey, A Shukla (2014) A new class of Bianchi cosmological models in f (R,T) gravity. 53(1), 289-306.
A Yadav (2014) Bianchi-V string cosmology with power law expansion in f (R, T) gravity. 129, 194.
Dnyaneshwar Pawar, Yadao Solanke (2015) Cosmological models filled with a perfect fluid source in the f(R,T) theory of gravity. 39, 54-59.
D Pawar, P (2015) Role of Constant Deceleration Parameter in Cosmological Model Filled with Dark Energy in f(R, T) Theory. 6, 719-732.
D Pawar, V Dagwal, P (2016) Two fluid Axially Symmetric Cosmological Models in f (R, T) Theory of Gravitation. 4(1), 111-118.
P Sahoo, B Mishra (2014) Kaluza-Klein dark energy model in the form of wet dark fluid in f(R,T) gravity. 92(9), 1062-1067.
P Sahoo, B Mishra, G Chakradhar Reddy (2014) Axially symmetric cosmological model in f(R, T) gravity. 129(3), 49.
D Reddy, S Anitha, S Umadevi (2014) Kantowski-Sachs bulk viscous string cosmological model in f (R, T) gravity. 96, 129.
R Naidu, D Reddy, T Ramprasad, K Ramana (2013) Bianchi type-V bulk viscous string cosmological model in f (R,T) gravity. 348(1), 247-252.
M Kiran, D Reddy (2013) Non-existence of Bianchi type-III bulk viscous string cosmological model in (, ) gravity. 346(2), 521-524.
D Reddy, R Naidu, K Naidu, T Prasad (2013) Kaluza-Klein universe with cosmic strings and bulk viscosity in f(R,T) gravity. 346(1), 261-265.
Sean Carroll, Vikram Duvvuri, Mark Trodden, Michael Turner (2004) Is cosmic speed-up due to new gravitational physics?. 70(4), 43528.
Shin'ichi Nojiri, Sergei Odintsov (2003) Modified gravity with negative and positive powers of curvature: Unification of inflation and cosmic acceleration. 68(12), 123512.
Shin'ichi Nojiri, Sergei Odintsov (2004) THE MINIMAL CURVATURE OF THE UNIVERSE IN MODIFIED GRAVITY AND CONFORMAL ANOMALY RESOLUTION OF THE INSTABILITIES. 19(08), 627-638.
Shin'ichi Nojiri, Sergei Odintsov (2007) INTRODUCTION TO MODIFIED GRAVITY AND GRAVITATIONAL ALTERNATIVE FOR DARK ENERGY. 04(01), 115-145.
Takeshi Chiba, Tristan Smith, Adrienne Erickcek (2007) Solar System constraints to generalhttp://www.w3.org/1998/Math/MathML" display="inline">f(R)gravity. 75(12), 124014.
K Adhav (2012) LRS Bianchi type-I cosmological model in f(R,T) theory of gravity. 339(2), 365-369.
D Reddy, R Santikumar, R Naidu (2012) Bianchi type-III cosmological model in f(R,T) theory of gravity. 342(1), 249-252.
D Reddy, R Naidu, B Satyanarayana (2012) Kaluza-Klein Cosmological Model in f(R,T) Gravity. 51(10), 3222-3227.
D Reddy, R Santhi kumar, T Pradeep kumar (2013) Bianchi type-III Dark Energy Model in f(R,T) Gravity. 52(1), 239-245.
M Kiran, D Reddy (2013) Non-existence of Bianchi type-III bulk viscous string cosmological model in f(R,T) gravity. 346(2), 521-524.
R Naidu (2013) Bianchi Type V bulk viscous string cosmological model in f(R,T) gravity. 348, 247-252.
D Reddy (2013) Bianchi Type V bulk viscous string cosmological model in Saez-Ballester scalar tensor theory of gravitation. 349, 473-477.
T Sotiriou, V Faraoni (2010) F(R) theories of gravity. 82(1), 451-497.
Antonio De Felice, Shinji Tsujikawa (2010) f(R) Theories. 13(1).
Thomas Sotiriou (2006) f ( R ) gravity and scalar-tensor theory. 23(17), 5117-5128.
S Capozziello, M De Laurentis (2011) Extended theories of gravity. 509(4-5), 167-321.
K Bamba, C.-Q Geng (2009) Thermodynamics in F(R) gravity with phantom crossing. 679(3), 282-287.
M Akbar, Rong-Gen Cai (2007) Thermodynamic behavior of field equations for http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll">f(R) gravity. 648(2-3), 243-248.
C Collins, E Glass, D Wilkinson (1980) Exact spatially homogeneous cosmologies. 12(10), 805-823.
A Singha, U Debnath (2009) Accelerating universe with a special form of decelerating parameter. 48(2), 351-356.
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2018-02-07
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