Trace anomaly and black holes evaporation
F. Canfora, G. Vilasi
Abstract
A model is proposed to describe a transition from a Schwarzschild black hole of mass M0 to a Schwarzschild black hole of mass M1 ≤ M0. The basic equations are derived from the non-vacuum Einstein field equations taking a source representing a null scalar field with a nonvanishing trace anomaly. It is shown that the nonvanishing trace anomaly of the scalar field prevents a complete evaporation.
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