Statefinder diagnostic for the R<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si6.svg"><mml:mover accent="true"><mml:mi>e</mml:mi><mml:mo>´</mml:mo></mml:mover></mml:math>nyi holographic dark energy

Sharma, Umesh Kumar; Dubey, Vipin Chandra

doi:10.1016/j.newast.2020.101419

Cited by 27 publications

(9 citation statements)

References 91 publications

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“…At the same time it deviates entirely from the normal behaviour at low redshift, the second parameter (s) in Figs. (4a)−(4b) depicts the opposite in behavior [65,66]. In this context Figures (3a− As a result, Figs.…”

Section: Statefindermentioning

confidence: 77%

Barrow HDE model for Statefinder diagnostic in non-flat FRW universe

Bharadwaj¹,

Pradhan²

2021

Preprint

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In this work we study a non-flat Friedmann-Robertson-Walker universe filled with a pressure-less dark matter (DM) and Barrow holographic dark energy (BHDE) whose IR cutoff is the apparent horizon. Among various DE models, (BHDE) model shows the dynamical enthusiasm to discuss the universe's transition phase. According to the new research, the universe transitioned smoothly from a decelerated to an accelerated period of expansion in the recent past. We exhibit that the development of q relies upon the type of spatial curvature. Here we study the equation of state (EoS) parameter for the BHDE model to determine the cosmological evolution for the non-flat universe. The (EoS) parameter and the deceleration parameter (DP) shows a satisfactory behaviour, it does not cross the the phantom line. We also plot the statefinder diagram to characterize the properties of the BHDE model by taking distinct values of barrow exponent △. Moreover, we likewise noticed the BHDE model in the (ω D − ω ′ D ) plane, which can furnish us with a valuable, powerful finding to the mathematical determination of the statefinder. In the statefinder trajectory, this model was found to be able to reach the ΛCDM fixed point.

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Section: Statefindermentioning

confidence: 77%

Barrow HDE model for Statefinder diagnostic in non-flat FRW universe

Bharadwaj¹,

Pradhan²

2021

Preprint

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“…The trajectories of the s-r plane end at the ΛCDM fixed point (s = 0, r = 1) at a late time, starting from matter-dominated (SCDM) s = 1, r = 1 through an arc segment, parabola (downward) in the case of Tsallis holographic dark energy (THDE) model [59,60]. The evolutionary curve of the s-r plane starts and ends at the ΛCDM fixed point (s = 0, r = 1) by making a swirl and shows the Chaplygin gas behaviour in the case of an RHDE model [61]. Recently, one of the authors has investigated the statefinder pair r(s) of SMHDE model, in which it always lies in Chaplygin gas region and approaches the ΛCDM fixed point (r = 1, s = 0) in the late time evolution [62].…”

Section: Statefinder Diagnosticsmentioning

confidence: 99%

Statefinder and Om Diagnostics for New Generalized Chaplygin Gas Model

2021

Self Cite

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We explore a unified model of dark matter and dark energy. This new model is a generalization of the generalized Chaplygin gas model and is known as a new generalized Chaplygin gas (NGCG) model. We study the evolutions of the Hubble parameter and the distance modulus for the model under consideration and the standard ΛCDM model and compare that with the observational datasets. Furthermore, we demonstrate two geometric diagnostics analyses including the statefinder (r,s) and Om(z) to the discriminant NGCG model from the standard ΛCDM model. The trajectories of evolution for (r,s) and Om(z) diagnostic planes are shown to understand the geometrical behavior of the NGCG model by using different observational data points.

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“…Neither in [ 2 ] nor in [ 3 ] is a specific position taken for black holes being

physical objects, or even (multi)fractal objects with nonintenger d (which, to the best of our knowledge, may not be excluded). At the present stage, it seems appropriate to analyze this nontrivial and delicate issue within the specialized realm of cosmological and black-hole physics [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 ]. However, it is seemingly undeniable that the sort of perplexity expressed in [ 49 , …”

Section: Relevant Misunderstandingmentioning

confidence: 99%