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Upper bounds on the compactness at the innermost light ring of anisotropic horizonless spheres
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Upper bounds on the compactness at the innermost light ring of anisotropic horizonless spheres
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In the background of isotropic horizonless spheres, Hod recently provided an analytical proof of a bound on the compactness at the innermost light ring with the dominant energy and non-negative trace conditions. In this work, we extend the discussion of isotropic spheres to anisotropic spheres. With the same dominant energy and non-negative trace conditions, we prove that Hod's bound also holds in the case of anisotropic horizonless spheres.
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