TL;DR
This paper constructs cylindrical traversable wormholes in DGP gravity, demonstrating they can be supported by normal matter, unlike in general relativity where exotic matter is required.
Contribution
It introduces a method to create cylindrical wormholes in DGP gravity supported by normal matter, contrasting with the need for exotic matter in general relativity.
Findings
Static wormholes supported by normal matter in DGP gravity
Vacuum wormholes do not exist in this framework
Contrasts with general relativity where exotic matter is necessary
Abstract
We construct traversable thin-shell wormholes in the Dvali-Gabadadze-Porrati theory with cylindrical symmetry applying the cut and paste procedure to a flat black string solution of the five-dimensional vacuum Einstein field equations. In contrast to general relativity case, where thin-shell wormholes violate both weak and null energy conditions, we show that static wormholes are supported by normal matter while vacuum wormholes do not exist.
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