Quintessence Cosmology with an Effective <em> Λ</em>-Term in Lyra Manifold

doi:10.1088/0256-307X/32/10/109501

Chin. Phys. Lett.

2015, Vol. 32

Issue (10): 109501 DOI: 10.1088/0256-307X/32/10/109501

GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS

Quintessence Cosmology with an Effective Λ-Term in Lyra Manifold

Khurshudyan M.^1**, Pasqua A.², Sadeghi J.³, Farahani H.^3**

¹Chair of Theoretical Physics and Physics Teaching Methods, Armenian State Pedagogical University, Yerevan 375010, Republic of Armenia
²Department of Physics, University of Trieste, Trieste 234127, Italy
³Department of Physics, University of Mazandaran, Babolsar 47416-95447, Iran

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Khurshudyan M., Pasqua A., Sadeghi J. et al 2015 Chin. Phys. Lett. 32 109501

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Abstract We study quintessence cosmology with an effective Λ-term in Lyra manifold. We consider three different models by choosing variable Λ depending on time, the Hubble parameter and the energy density of dark matter and dark energy. Dark energy is assumed as quintessence which interacts with the dark matter. Using numerical analysis we investigate the behavior of cosmological parameters in three different models and compare our results with observational data. State-finder diagnostic is also performed for all models.

Received: 23 May 2015 Published: 30 October 2015

PACS:	95.35.+d	(Dark matter)
	95.85.-e	(Astronomical observations (additional primary heading(s) must be chosen with these entries to represent the astronomical objects and/or properties studied))
	98.80.-k	(Cosmology)
	95.30.Cq	(Elementary particle processes)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/32/10/109501 OR https://cpl.iphy.ac.cn/Y2015/V32/I10/109501

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	Khurshudyan M.
	Pasqua A.
	Sadeghi J.
	Farahani H.

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