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- W3161982088 abstract "The main aim of this paper is to study late time accelerated expansion of the universe with the help of k-essence scalar field. We have chosen non-canonical k-essence lagrangian of the form V ( Φ ) F ( X ), and converted to canonical lagrangian with the help of scaling ralation <mml:math display=inline><mml:mrow><mml:msqrt><mml:mi>X</mml:mi></mml:msqrt><mml:msub><mml:mi>F</mml:mi><mml:mi>X</mml:mi></mml:msub><mml:mo>=</mml:mo><mml:mi>C</mml:mi><mml:msup><mml:mtext>a</mml:mtext><mml:mrow><mml:mtext>-3</mml:mtext></mml:mrow></mml:msup></mml:mrow></mml:math>. The obtained lagrangian has two generalised co-ordinate, logarithm of the scale factor (q=ln a ) and scalar field ( Φ ). From the obtained lagrangian we studied two most important cosmological parameter, Equation of state parameter ( ω ≈ –1) and deceleration parameter ( q 0 ≈ –1) which are to some extent consistent with the current observations. Both the parameters indicates an accelerated expansion of the universe driven by negative pressure known as dark energy." @default.
- W3161982088 created "2021-05-24" @default.
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- W3161982088 date "2020-11-02" @default.
- W3161982088 modified "2023-09-26" @default.
- W3161982088 title "NON-CANONICAL TO CANONICAL K-ESSENCE AND ACCELERATED EXPANSION OF THE UNIVERSE" @default.
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- W3161982088 doi "https://doi.org/10.15864/jmscm.2105" @default.
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