Wormhole creation by quantum tunnelling

Battarra, Lorenzo; Lavrelashvili, George; Lehners, Jean-Luc

doi:10.1142/9789813226609_0123

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…The process of quantum tunneling was studied in a self-interacting scalar field theory with non-minimal coupling to gravity. 64,65 It was demonstrated that in these theories gravitational instantons can develop a neck, which is a feature prohibited in theories with minimal coupling. Furthermore, it was show that such instantons with necks lead to the materialization of bubble geometries containing a wormhole region.…”

Section: On Wormholes Creation By Quantum Tunnellingmentioning

confidence: 99%

From the Flamm–Einstein–Rosen bridge to the modern renaissance of traversable wormholes

Lobo

2016

Int. J. Mod. Phys. D

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We consider the possibility of multiply-connected spacetimes, ranging from the FlammEinstein-Rosen bridge, geons, and the modern renaissance of traversable wormholes. A fundamental property in wormhole physics is the flaring-out condition of the throat, which through the Einstein field equation entails the violation of the null energy condition. In the context of modified theories of gravity, it has also been shown that the normal matter can be imposed to satisfy the energy conditions, and it is the higher order curvature terms, interpreted as a gravitational fluid, that sustain these non-standard wormhole geometries, fundamentally different from their counterparts in general relativity. We explore interesting features of these geometries, in particular, the physical properties and characteristics of these 'exotic spacetimes'.

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Section: On Wormholes Creation By Quantum Tunnellingmentioning

confidence: 99%

From the Flamm–Einstein–Rosen bridge to the modern renaissance of traversable wormholes

Lobo

2016

Int. J. Mod. Phys. D

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“…We can solve the same initial condition not only along one time contour, but also over the complex plane (Fig. 2) (see also [28][29][30]). This result shows that along the turning time X 0.85, three curves (dashed, dotted, and thin white curves, corresponding a i = 0, φ 1i = 0, and φ 2i = 0, respectively) coincide and hence along the Lorentzian time, all fields will be classicalized.…”

Section: Behavior Of Nonmentioning

confidence: 99%

Phantom of the Hartle–Hawking instanton: connecting inflation with dark energy

2016

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If the Hartle-Hawking wave function is the correct boundary condition of our universe, the history of our universe will be well approximated by an instanton. Although this instanton should be classicalized at infinity, as long as we are observing a process of each history, we may detect a nonclassicalized part of field combinations. When we apply it to a dark energy model, this non-classicalized part of fields can be well embedded to a quintessence and a phantom model, i.e., a quintom model. Because of the property of complexified instantons, the phantomness will be naturally free from a big rip singularity. This phantomness does not cause perturbative instabilities, as it is an effect emergent from the entire wave function. Our work may thus provide a theoretical basis for the quintom models, whose equation of state can cross the cosmological constant boundary phenomenologically.

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Wormhole creation by quantum tunnelling

Cited by 2 publications

References 19 publications

From the Flamm–Einstein–Rosen bridge to the modern renaissance of traversable wormholes

From the Flamm–Einstein–Rosen bridge to the modern renaissance of traversable wormholes

Phantom of the Hartle–Hawking instanton: connecting inflation with dark energy

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