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Modified-gravity wormholes without exotic matter
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Modified-gravity wormholes without exotic matter
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A fundamental ingredient in wormhole physics is the flaring-out condition at the throat which, in classical general relativity, entails the violation of the null energy condition. In this work, we present the most general conditions in the context of modified gravity, in which the matter threading the wormhole throat satisfies all of the energy conditions, and it is the higher order curvature terms, which may be interpreted as a gravitational fluid, that support these nonstandard wormhole geometries. Thus, we explicitly show that wormhole geometries can be theoretically constructed without the presence of exotic matter, but are sustained in the context of modified gravity.
Forward citations
Cited by 3 Pith papers
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Traversable Wormholes Supported by Entropy-Inspired Effective Matter Sectors
Modified entropy profiles from Barrow, Tsallis, Kaniadakis, logarithmic, and exponential entropies can serve as effective sources for traversable wormholes.
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Dyonic Ellis-Bronnikov wormholes from warped extra dimensions
Dyonic Ellis-Bronnikov wormholes supported by phantom dilaton, axion, and dyonic gauge fields arise from warped five-dimensional scalar-tensor theories via Kaluza-Klein reduction.
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Thermodynamics of thin-shell wormholes
The paper derives a generalized first law for thin-shell wormholes showing entropy conservation for isolated transparent shells and flux-dependent entropy change when bulk matter crosses the throat.
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