Abstract
In this paper, we seek a relationship between the assumption of conformal symmetry and the exotic matter needed to hold a wormhole open. By starting with a Morris-Thorne wormhole having a constant energy density, we show that the conformal factor provides an extra degree of freedom sufficient to account for the exotic matter. The same holds for Morris-Thorne wormholes in a noncommutative-geometry setting. Applied to thin shells, a radius that results in a wormhole with positive surface density and negative surface pressure and that violates the null energy condition on a thin shell would exist.
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Kuhfittig, P.K.F. Conformal symmetry wormholes and the null energy condition. Journal of the Korean Physical Society 70, 962–966 (2017). https://doi.org/10.3938/jkps.70.962
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DOI: https://doi.org/10.3938/jkps.70.962