Wormhole with varying cosmological constant

Abstract

It has been suggested that the cosmological constant is a variable dynamical quantity. A class of solution has been presented for the spherically symmetric space time describing wormholes by assuming the erstwhile cosmological constant $\Lambda$ to be a space variable scalar, viz., $\Lambda$ = $\Lambda (r)$ . It is shown that the Averaged Null Energy Condition (ANEC) violating exotic matter can be made arbitrarily small.

8 pages, 2 figures, Accepted in Gen. Rel. Grav

References in corpus (16)

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• The Cosmological Constant and Dark Energy
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• Morris-Thorne wormholes with a cosmological constant
• Cosmological term as a source of mass
• Stability of phantom wormholes
• Brans-Dicke wormholes in the Jordan and Einstein frames
• Brans-Dicke wormholes in nonvacuum spacetime
• Brans wormholes
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Cited by in corpus (29)

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• Wormholes supported by polytropic phantom energy
• Wormholes in exponential $f(R,T)$ gravity
• The Finslerian wormhole models
• Shadow images of Kerr-like wormholes
• Noncommutative Wormholes in $f(R)$ Gravity with Lorentzian Distribution
• Static spherically symmetric wormholes in $f(Q,T)$ gravity
• Non violation of energy conditions in wormholes modelling
• Phantom fluid supporting traversable wormholes in alternative gravity with extra material terms
• Charged wormholes in f(R,T) extended theory of gravity
• Traversable Wormholes in $f(R,T)$ Gravity
• Charged Wormhole Solutions in Einstein-Cartan gravity
• A new class of stable $(2+1)$ dimensional thin shell wormhole
• Static spherically symmetric wormholes with isotropic pressure
• Generating functions of wormholes
• Charged traversable wormholes supported by Casimir energy with and without GUP corrections
• Construction of 3D wormhole supported by phantom energy
• Phantom Wormhole Solutions in a Generic Cosmological Constant Background
• Some new class of Chaplygin Wormholes
• Wormhole solution in modified teleparallel-Rastall gravity and energy conditions
• Exploring wormhole solutions with global monopole charge in the context of $f(Q)$ gravity
• Morris-Thorne-type wormhole with global monopole charge and the energy conditions
• A topologically charged four-dimensional wormhole and the energy conditions
• Dynamical Chern-Simons modified gravity, Godel Universe and variable cosmological constant
• Smeared Mass Source Wormholes in Modified $f(R)$ Gravity with the Lorentzian Density Distribution Function
• Quintom wormholes
• Wormholes supported by Scalar Fields with Negative Kinetic Energy
• Higher-dimensional topologically charged traversable defect wormhole with non-exotic matter