Statefinder Diagnostic for Variable Modified Chaplygin Gas in LRS Bianchi Type I Universe

K. S. Adhav

Advances in Mathematical Physics, 2012, vol. 2012, 1-11

Abstract:

The Locally Rotationally Symmetric (LRS) Bianchi type I cosmological model with variable modified Chaplygin gas having the equation of state ð ‘ = ð ´ ð œŒ − ð µ / 𠜌 ð ›¼ , where 0 ≤ ð ›¼ ≤ 1 , ð ´ is a positive constant, and ð µ is a positive function of the average-scale factor ð ‘Ž ( ð ‘¡ ) of the universe (i.e., ð µ = ð µ ( ð ‘Ž ) ) has been studied. It is shown that the equation of state of the variable modified Chaplygin gas interpolates from radiation-dominated era to quintessence-dominated era. The statefinder diagnostic pair (i.e., { ð ‘Ÿ , ð ‘ } parameter) is adopted to characterize different phases of the universe.

Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlamp:714350

DOI: 10.1155/2012/714350

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