scholarly journals Classical and quantum exact solutions for the anisotropic Bianchi type I in multi-scalar field cosmology with an exponential potential driven inflation

2020 ◽  
Vol 809 ◽  
pp. 135667
Author(s):  
J. Socorro ◽  
Omar E. Núñez ◽  
Rafael Hernández-Jiménez
1993 ◽  
Vol 48 (10) ◽  
pp. 4662-4668 ◽  
Author(s):  
J. M. Aguirregabiria ◽  
A. Feinstein ◽  
J. Ibáñez

2002 ◽  
Vol 11 (08) ◽  
pp. 1195-1207 ◽  
Author(s):  
ANIRUDH PRADHAN ◽  
ANIL KUMAR VISHWAKARMA

Barber's second self creation theory with perfect fluid source for an LRS Bianchi type-I metric is considered using deceleration parameter to be constant where the metric potentials are taken as functions of x and t. In particular, some exact solutions have also been obtained for the vacuum universe, Zel'dovich universe and radiation universe. Some physical properties of the models are also discussed.


2006 ◽  
Vol 47 (4) ◽  
pp. 042505 ◽  
Author(s):  
T. Christodoulakis ◽  
Th. Grammenos ◽  
Ch. Helias ◽  
P. G. Kevrekidis ◽  
A. Spanou

2019 ◽  
Vol 34 (33) ◽  
pp. 1950272
Author(s):  
Mahdieh Naderi ◽  
Ali Aghamohammadi ◽  
Abdollah Refaei ◽  
Haidar Sheikhahmadi

The behavior of a non-canonical scalar field within an anisotropic Bianchi type I, spatially homogeneous Universe in the framework of the intermediate inflation will be studied. It will be examined on the condition that both the anisotropy and non-canonical sources come together if there is any improvement in compatibility with the observational data originated from Planck 2015. Based on this investigation, it can be observed that automatically a steep potential which can manage inflation in a better way will be obtained. Additionally, as a common procedure for an inflationary study, we shall try to calculate the related inflationary observables such as the amplitude of the scalar perturbations, scalar and tensor spectral indices, tensor-to-scalar ratio, the running spectral index and the number of e-folds. As an exciting part of our results, we will find that our model has a good consistency compared to data resulting from CMB and different Planck results. To justify our claims, the well-known canonical inflationary scenario in an anisotropic Bianchi type I Universe will also be evaluated.


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