scholarly journals Einstein static universe in scalar-fluid theories

2015 ◽  
Vol 92 (12) ◽  
Author(s):  
Christian G. Böhmer ◽  
Nicola Tamanini ◽  
Matthew Wright
Keyword(s):  
Static Universe ◽  
Einstein Static Universe

scholarly journals Stability of the Einstein static universe inf(R)gravity

2007 ◽  
Vol 76 (8) ◽  
Author(s):  
Christian G. Böhmer ◽  
Lukas Hollenstein ◽  
Francisco S. N. Lobo
Keyword(s):  
Static Universe ◽  
Einstein Static Universe

scholarly journals Brane-world generalizations of the Einstein static universe

2002 ◽  
Vol 19 (2) ◽  
pp. 213-221 ◽  
Author(s):  
László Á Gergely ◽  
Roy Maartens
Keyword(s):  
Brane World ◽  
Static Universe ◽  
Einstein Static Universe

scholarly journals On the restricted conformal group of the (1+n)-Einstein static universe

2019 ◽  
Vol 146 ◽  
pp. 103517 ◽  
Author(s):  
Olimjon Eshkobilov ◽  
Emilio Musso ◽  
Lorenzo Nicolodi
Keyword(s):  
Conformal Group ◽  
Static Universe ◽  
Einstein Static Universe

scholarly journals Stability of Einstein static universe over Lyra geometry

2015 ◽  
Vol 93 (12) ◽  
pp. 1566-1570 ◽  
Author(s):  
F. Darabi ◽  
Y. Heydarzade ◽  
F. Hajkarim
Keyword(s):  
State Parameter ◽  
Lyra Geometry ◽  
Physical Parameters ◽  
Static Universe ◽  
Equation Of State Parameter ◽  
Existence And Stability ◽  
Einstein Static Universe ◽  
Tensor Perturbations ◽  
The Stability ◽  
Scalar Perturbations

The existence and stability conditions of Einstein static universe against homogeneous scalar perturbations in the context of Lyra geometry is investigated. The stability condition is obtained in terms of the constant equation of state parameter ω = p/ρ depending on energy density ρ0 and scale factor a0 of the initial Einstein static universe. Also, the stability against vector and tensor perturbations is studied. It is shown that a stable Einstein static universe can be found in the context of Lyra geometry against scalar, vector, and tensor perturbations for suitable range and values of physical parameters.

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