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Oscillatory Universe, dark energy and general relativity |
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| Authors: | Partha Pratim Ghosh Saibal Ray A A Usmani Utpal Mukhopadhyay |
| Institution: | 1. Department of Physics, A.J.C. Bose Polytechnic, Berachampa, North 24 Parganas, Devalaya, 743 424, West Bengal, India 2. Department of Physics, Government College of Engineering & Ceramic Technology, Kolkata, 700 010, West Bengal, India 3. Department of Physics, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India 4. Satyabharati Vidyapith, North 24 Parganas, Kolkata, 700 126, West Bengal, India |
| Abstract: | The concept of oscillatory Universe appears to be realistic and buried in the dynamic dark energy equation of state. We explore its evolutionary history under the framework of general relativity. We observe that oscillations do not go unnoticed with such an equation of state and that their effects persist later on in cosmic evolution. The ‘classical’ general relativity seems to retain the past history of oscillatory Universe in the form of increasing scale factor as the classical thermodynamics retains this history in the form of increasing cosmological entropy. |
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