Bianchi Type VI Inflationary Cosmological Model with Massive String Source in General Relativity

Authors Laxmi Poonia, Sanjay Sharma, Sunil Kumawat

Department of Mathematics and Statistics, Manipal University Jaipur, Rajasthan 303007, India

Issue Volume 13, Year 2021, Number 3
Dates Received 21 March 2021; revised manuscript received 16 June 2021; published online 25 June 2021
Citation Laxmi Poonia, Sanjay Sharma, Sunil Kumawat, J. Nano- Electron. Phys. 13 No 3, 03022 (2021)
PACS Number(s) 98.80.Cq, 98.80.Jk, 04.20. – q
Keywords Bianchi type VI, Inflationary cosmological model, Massive string source, General relativity.

A massive string source inflationary cosmological model has been investigated in Bianchi type VI metric under consideration of a flat potential. The set of field equations is solved assuming that the shear tensor component is proportional to the expansion of the model, which provides c = (ab)k relation between metric coefficients, where k ≠ 1 yields a time-dependent deceleration parameter; provides the universe that shows the transition from early phase of deceleration to a current scenario of accelerated expansion. The obtained result indicates that cosmic strings dominate in early cosmos and disappear for sufficiently late time. We have investigated energy density and tension density in the developed model. The proper volume growths with time, and the Hubble parameter is large at initial condition and tends to a finite value at large T. The kinematical and structural aspects of the model and their physical importance are also discussed.

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