A frame dependent effective action motivated by the postulates of three-spacegeneral coordinate invariance and Weyl scaling invariance exactly mimics acosmological constant in Robertson-Walker spacetimes. However, in a staticspherically symmetric Schwarzschild-like geometry it modifies the black holehorizon structure within microscopic distances of the nominal horizon, in sucha way that $g_{00}$ never vanishes. This could have important implications forthe black hole "information paradox".
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