A 4D Einstein-Gauss-Bonnet wormhole sourced by a smoothed string fluid is built, but the advertised null-energy-condition satisfaction and asymptotic flatness are not supported by the paper's own equations.
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Traversable wormholes from a smoothed string fluid in 4D Einstein-Gauss-Bonnet gravity
A 4D Einstein-Gauss-Bonnet wormhole sourced by a smoothed string fluid is built, but the advertised null-energy-condition satisfaction and asymptotic flatness are not supported by the paper's own equations.