Emergent Universe from a composition of matter, exotic matter and dark energy

Authors

  • B. C. Paul,

    Corresponding author
    1. Physics Department, North Bengal University, Dist. Darjeeling, PIN 734 013, West Bengal, India
    2. IUCAA Reference Centre, Physics Department, North Bengal University, Dist. Darjeeling, PIN 734 013, West Bengal, India
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  • S. Ghose,

    Corresponding author
    1. Physics Department, North Bengal University, Dist. Darjeeling, PIN 734 013, West Bengal, India
    2. IUCAA Reference Centre, Physics Department, North Bengal University, Dist. Darjeeling, PIN 734 013, West Bengal, India
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  • P. Thakur

    Corresponding author
    1. IUCAA Reference Centre, Physics Department, North Bengal University, Dist. Darjeeling, PIN 734 013, West Bengal, India
    2. Physics Department, Alipurduar College Dist. Jalpaiguri, PIN 736122, West Bengal, India
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E-mail: bcpaul@iucaa.ernet.in (BCP); souvik@bose.res.in (SG); prasenjit_thakur1@yahoo.co.in (PT)

ABSTRACT

A specific class of flat Emergent Universe (EU) is considered and its viability is tested in view of the recent observations. Model parameters are constrained from Stern data for Hubble parameter and redshift [H(z) versus z] and from a model-independent measurement of BAO peak parameter. It is noted that a composition of exotic matter, dust and dark energy, capable of producing an EU, cannot be ruled out with present data. Evolution of other relevant cosmological parameters, viz. density parameter (Ω) and effective equation of state (EOS) parameter (ωeff), are also shown.

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