Abstract

Bianchi type-I cosmological model for a cloud of a string with bulk viscosity is investigated in Lyra geometry. To get a deterministic model of universe, we assumed a unique form of constant deceleration parameter (CDP). Also, the bulk viscosity is presented as a linear combination of two positive constants ξ 0 & ξ 1 with Hubble parameter i.e ξ = ξ 0 + ξ 1 H and studied the results resemblance with the constant and variable bulk viscosity in three different cases. Also, we conclude that the displacement vector used in Lyra geometry is vanishing in late time. The physical acceptability of the model is investigated.

Details

Title
String Cosmological Models with Bulk Viscosity in Lyra Geometry
Author
Sethi, Ajit K 1 ; Nayak, Bishnukar 2 ; Patra, Raghunath 1 

 Dept. of Mathematics, Berhampur University, Berhampur, Odisha 
 Dept. of Mathematics, NIST, Berhampur, Odisha 
Publication year
2019
Publication date
Oct 2019
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2568058109
Copyright
© 2019. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.