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Wormhole throats in $R^{m}$ gravity
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We consider wormhole geometries subject to a gravitational action consisting of non-linear powers of the Ricci scalar. Specifically, wormhole throats are studied in the case where Einstein gravity is supplemented with a Ricci-squared and inverse Ricci term. In this modified theory it is found that static wormhole throats respecting the weak energy condition can exist. The analysis is done locally in the vicinity of the throat, which eliminates certain restrictions on the models introduced by considering the global topology.
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Cited by 1 Pith paper
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Observing of background electromagnetic radiation of the real sky through the throat of a wormhole
A simulation shows that a nearby wormhole mouth would project a lensed image of the real CMB sky and Milky Way inside its silhouette, offering a possible observational signature distinct from a black hole.
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