Black-bounce to traversable wormhole
نویسندگان
چکیده
منابع مشابه
Quantum field theory constrains traversable wormhole geometries.
Recently a bound on negative energy densities in four-dimensional Minkowski spacetime was derived for a minimally coupled, quantized, massless, scalar field in an arbitrary quantum state. The bound has the form of an uncertainty principle-type constraint on the magnitude and duration of the negative energy density seen by a timelike geodesic observer. When spacetime is curved and/or has boundar...
متن کاملHow to make a traversable wormhole from a Schwarzschild black hole
Introduction. The recently discovered acceleration of the universe [1, 2] indicates that its large-scale evolution is dominated by unknown dark energy which violates at least the strong energy condition, and perhaps also the weak energy condition, where it is known as phantom energy [3]. Such phantom energy is precisely what is needed to support traversable wormholes [4, 5, 6, 7, 8, 9]. This Le...
متن کاملStable phantom energy traversable wormhole models
A possible candidate for the present accelerated expansion of the Universe is “phantom energy”, which possesses an equation of state of the form ω ≡ p/ρ < −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. In this context,...
متن کاملThe traversable wormhole with classical scalar fields
We study the Lorentzian static traversable wormholes coupled to quadratic scalar fields. We also obtain the solutions of the scalar fields and matters in the wormhole background and find that the minimal size of the wormhole should be quantized under the appropriate boundary conditions for the positive nonminimal massive scalar field.
متن کاملSurface stresses on a thin shell surrounding a traversable wormhole
We match an interior solution of a spherically symmetric traversable wormhole to a unique exterior vacuum solution, with a generic cosmological constant, at a junction interface, and the surface stresses on the thin shell are deduced. In the spirit of minimizing the usage of exotic matter we determine regions in which the weak and null energy conditions are satisfied on the junction surface. Th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2019
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2019/02/042