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Cited by 549

The DOI matches its Crossref record; 62 of the 62 references it cites were found in a registry or an index.

Phantom energy traversable wormholes

Open access
Lobo, Francisco S. N.·2005·Physical Review D
DOI 10.1103/physrevd.71.084011
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Abstract

It has been suggested that a possible candidate for the present accelerated expansion of the Universe is ``phantom energy''. The latter possesses an equation of state of the form $\ensuremath{\omega}\ensuremath{\equiv}p/\ensuremath{\rho}<\ensuremath{-}1$, consequently violating the null energy condition. As this is the fundamental ingredient to sustain traversable wormholes, this cosmic fluid presents us with a natural scenario for the existence of these exotic geometries. 'Note, however, that the notion of phantom energy is that of a homogeneously distributed fluid. Nevertheless, it can be extended to inhomogeneous spherically symmetric spacetimes, and it is shown that traversable wormholes may be supported by phantom energy. Because of the fact of the accelerating Universe, macroscopic wormholes could naturally be grown from the submicroscopic constructions that originally pervaded the quantum foam. One could also imagine an advanced civilization mining the cosmic fluid for phantom energy necessary to construct and sustain a traversable wormhole. In this context, we investigate the physical properties and characteristics of traversable wormholes constructed using the equation of state $p=\ensuremath{\omega}\ensuremath{\rho}$, with $\ensuremath{\omega}<\ensuremath{-}1$. We analyze specific wormhole geometries, considering asymptotically flat spacetimes and imposing an isotropic pressure. We also construct a thin shell around the interior wormhole solution, by imposing the phantom energy equation of state on the surface stresses. Using the ``volume integral quantifier'' we verify that it is theoretically possible to construct these geometries with vanishing amounts of averaged null energy condition violating phantom energy. Specific wormhole dimensions and the traversal velocity and time are also deduced from the traversability conditions for a particular wormhole geometry. These phantom energy traversable wormholes have far-reaching physical and cosmological implications. For instance, an advanced civilization may use these geometries to induce closed timelike curves, consequently violating causality.

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Metadata

Authors
Lobo, F. S. N.
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
2005-04-13
Volume
71
Issue
8
ISSN
  • 0556-2821 (ISSN-L)
  • 1550-7998
  • 1550-2368
DOI
10.1103/physrevd.71.084011
OpenAlex
W2173821274
Cited by
549
References
62
FWCI
16.59
Type
journal article
Language
en
Open access
green

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