A single model of traversable wormholes supported by generalized phantom energy or Chaplygin gas

Kuhfittig, Peter K. F.

doi:10.1007/s10714-008-0716-3

Cited by 27 publications

(20 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result shows that a wormhole solution requires a phantom-energy background, i.e., ω < −1, which is consistent with earlier studies [10,[23][24][25]. (The reason is that whenever ω < −1 in the equation of state p = ωρ, the null energy condition is violated.)…”

Section: Wormhole Structuresupporting

confidence: 91%

Wormholes with a barotropic equation of state admitting a one-parameter group of conformal motions

Kuhfittig

2015

Annals of Physics

View full text Add to dashboard Cite

h i g h l i g h t s• The theoretical construction of Morris-Thorne wormholes retains complete control over the geometry at the expense of the stress-energy tensor.• The introduction of a barotropic equation of state fails to produce a solution even if the energy density is known.• The assumption of conformal symmetry fills the gap in the form of a complete wormhole solution. a b s t r a c tThe theoretical construction of a traversable wormhole proposed by Morris and Thorne maintains complete control over the geometry by assigning both the shape and redshift functions, thereby leaving open the determination of the stress-energy tensor. This paper examines the effect of introducing the linear barotropic equation of state p r = ωρ on the theoretical construction. If either the energy density or the closely related shape function is known, then the Einstein field equations do not ordinarily yield a finite redshift function. If, however, the wormhole admits a one-parameter group of conformal motions, then both the redshift and shape functions exist provided that −3 < ω < −1. In a cosmological setting, the equation of state p = ωρ, ω < −1, is associated with phantom dark energy, which is known to support traversable wormholes.The restriction −3 < ω < −1 that arises in the present wormhole setting can be attributed to the assumption of conformal symmetry.

show abstract

Section: Wormhole Structuresupporting

confidence: 91%

Wormholes with a barotropic equation of state admitting a one-parameter group of conformal motions

Kuhfittig

2015

Annals of Physics

View full text Add to dashboard Cite

show abstract

“…Unlike black holes, holding a wormhole open requires the violation of the null energy condition, an example of which is the Casimir effect [1]. On the cosmological level, phantom dark energy also violates the null energy condition and could therefore give rise to wormholes [2,3].…”

Section: Introductionmentioning

confidence: 99%

Possible existence of wormholes in the galactic halo region

et al. 2014

View full text Add to dashboard Cite

Two observational results, the density profile from simulations performed in the CDM scenario and the observed flat galactic rotation curves, are taken as input with the aim of showing that the galactic halo possesses some of the characteristics needed to support traversable wormholes. This result should be sufficient to provide an incentive for scientists to seek observational evidence for wormholes in the galactic halo region.

show abstract

“…Also subscripts 'm' and 'de' correspond to matter and dark energy respectively while p and ρ are respectively pressure and energy density. In (2), matter is assumed to be pressureless (p m = 0) while the dark energy's equation of state is considered of the form [25] …”

Section: Modeling Of Dynamical Systemmentioning

confidence: 99%

A Single Model of Interacting Dark Energy: Generalized Phantom Energy or Generalized Chaplygin Gas

Jamil

2009

Int J Theor Phys

View full text Add to dashboard Cite

I present a model in which dark energy interacts with matter. The former is represented by a variable equation of state. It is shown that the phantom crossing takes place at zero redshift, moreover, stable scaling solution of the Friedmann equations is obtained. I show that dark energy is most probably be either generalized phantom energy or the generalized Chaplygin gas, while phantom energy is ruled out as a dark energy candidate.

show abstract

A single model of traversable wormholes supported by generalized phantom energy or Chaplygin gas

Cited by 27 publications

References 20 publications

Wormholes with a barotropic equation of state admitting a one-parameter group of conformal motions

Wormholes with a barotropic equation of state admitting a one-parameter group of conformal motions

Possible existence of wormholes in the galactic halo region

A Single Model of Interacting Dark Energy: Generalized Phantom Energy or Generalized Chaplygin Gas

Contact Info

Product

Resources

About