Cosmological evolution of interacting dark energy in Lorentz violation

Zen, Freddy P.; Arianto,; Gunara, Bobby Eka; Triyanta,; Purwanto, Agus

doi:10.1140/epjc/s10052-009-1104-1

Cited by 25 publications

(13 citation statements)

References 71 publications

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“…These models yield stable scaling solution of the FRW equations at late times of the evolving universe. Interacting Chaplygin gas allows the universe to cross the phantom divide, which is not possible by the pure Chaplygin gas [20]. There is a report that this interaction is physically observed in the Abell cluster A586, which in fact supports the GCG cosmological model and apparently rules out the ΛCDM model [21].…”

Section: Introductionmentioning

confidence: 83%

“…In fact, researches show that a presumed interaction may help alleviate the coincidence problem [19]. Some models that allow interaction between the scalar field and the matter field have been proposed as a solution to the cosmic coincidence problem [20]. Models based on dark energy interacting with dark matter have been widely investigated by several authors.…”

Section: Introductionmentioning

confidence: 99%

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Interaction Between Tachyon and Hessence (or Hantom) Dark Energies

Chattopadhyay¹,

Debnath

2011

Int J Theor Phys

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In this paper, we have considered that the universe is filled with tachyon, hessence (or hantom) dark energies. Subsequently we have investigated the interactions between tachyon and hessence (hantom) dark energies and calculated the potentials considering the power law form of the scale factor. It has been revealed that the tachyonic potential always decreases and hessence (or hantom) potential increases with corresponding fields. Furthermore, we have considered a correspondence between the hessence (or hantom) dark energy density and new variable modified Chaplygin gas energy density. From this, we have found the expressions of the arbitrary positive constants B0 and C of new variable modified Chaplygin gas.

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Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Interaction Between Tachyon and Hessence (or Hantom) Dark Energies

Chattopadhyay¹,

Debnath

2011

Int J Theor Phys

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“…So from this first point of view, Rastall gravity is not equivalent to Einstein gravity. Note that for non-linear form of scalar Ricci, as the Gauss-Bonnet gravity or f (R) gravity, on the non-conservative matter tensor equation (39) might produce the equivalence between these two theories. Nevertheless, the non-linear term is beyond the Ratall theory that can be proposed for further study as…”

Section: Rastall Gravity Is Not Equivalent With Einstein Gravitymentioning

confidence: 99%

Kerr–Newman–NUT–Kiselev black holes in Rastall theory of gravity and Kerr/CFT correspondence

Sakti¹,

Suroso²,

Zen³

2020

Annals of Physics

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We present a new twisted rotating black hole solution by performing Demiański-Newman-Janis algorithm to the electrically and dyonically charged black hole with quintessence in Rastall theory of gravity. Using our black hole solution, we argue that Rastall gravity is not equivalent with Einstein gravity. For further explanation, the black hole properties such as the horizon and ergosphere are studied for which there are some different properties for those theories. Some thermodynamic properties of the black hole solution are also discussed. At the end, considering the Kerr/CFT correspondence is valid for our black hole solution, the central charge from the CFT of this extremal solution is derived. spacetime. It is considered a non-minimal coupling of the matter field to space-time geometry with the coupling constant κλ or Rastall parameter. This quantity quantifies the deviation from the Einstein theory of gravity. When Rastall parameter vanishes, it produces the Einstein theory of gravity. Furthermore, in [3,4] it is argued that Rastall gravity is a special case of f (R, T ) gravity.Rastall theory of gravity might be interpreted as a direct accomplishment of the Mach principle which suggests that the inertial properties of a mass distribution are determined by the distribution of mass-energy in the external space-time [5]. Thus, the source of gravitation, either mass-density or the elements of energy-momentum tensor, depends on the gravitational tensor. We can find also some recent research work that use this gravitational theory to explain the cosmological aspects such as the accelerating expansion of the universe and the inflationary problems [6,7,8,9,10,11,12,13,14,15,16]. In the smaller scale, some astrophysical configurations are investigated by performing this theory. For instance, the investigation of perfect fluid spheres, compact stars, neutron stars, black holes, and wormholes is done in the context of Rastall gravity [17,18,19,20,21,22,23,24,25]. Corresponding to black hole solutions in Rastall gravity, a fascinating non-commutative inspired black hole solution is obtained in [26]. In addition, the black hole solution with the source of a Gaussian matter distribution is obtained in [27]. Several extensions of black hole solution in Rastall gravity are further investigated in [28,29,30,31,32]. Besides that, the thermodynamic properties of black hole solutions in the Rastall gravity are discussed in [33].Recently, it is claimed by Visser [34] that Rastall theory of gravity is equivalent with Einstein theory. However, Darabi et al. [35] compare these two gravitational theories and summarize that Visser's conclusion is not correct. The argument in [35], indeed, supports Rastall theory of gravity for which this theory is still an open theory comparing to the usual general relativity. Henceforth, this theory may face the challenges of cosmological observations as the general relativity.In recent years, it is found that our universe experiences accelerated expansion due to the existence of dark energy that fi...

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“…Cosmological application of this equation has been studied extensively, for a review see [6,7]. Modification of the SMS equation with Lorentz invariance violation and its applications in cosmology has been studied in [8,9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Cosmological model with nonminimal derivative coupling of scalar fields in five dimensions

Suroso

Zen

2013

Gen Relativ Gravit

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We study a nonminimal derivative coupling (NMDC) of scalar field, where the scalar field is coupled to curvature tensor in the five dimensional universal extra dimension model. We apply the Einstein equation and find its solution. First, we consider a special case of pure free scalar field without NMDC and we find that for static extradimension, the solution is equivalent to the standard cosmology with stiff matter. For a general case of pure free scalar field with NMDC, we find that the de Sitter solution is the solution of our model. For this solution, the scalar field evolves linearly in time. In the limit of small Hubble parameter, the general case give us the same solution as in the pure free scalar field. Finally, we perform a dynamical analysis to determine the stability of our model. We find that the extradimension, if it exist, can not be static and always shrinks with the expansion of four dimensional spacetime.

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Cosmological evolution of interacting dark energy in Lorentz violation

Cited by 25 publications

References 71 publications

Interaction Between Tachyon and Hessence (or Hantom) Dark Energies

Interaction Between Tachyon and Hessence (or Hantom) Dark Energies

Kerr–Newman–NUT–Kiselev black holes in Rastall theory of gravity and Kerr/CFT correspondence

Cosmological model with nonminimal derivative coupling of scalar fields in five dimensions

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