Consistency paradox in patient observers of evaporating blackholes

Journal Article

• المجلة \ الصحيفة: Annals of Physics

مستخلص المنشور

    In this article, we  will  demonstrate   that there 
        exist a fundamental 'consistency paradox' in evaporating black holes.  This is because a patient asymptotic observer would observe that the black hole totally evaporates before the free-falling crosses  the event horizon.  However,  from the perspective of  the free-falling observer, he has fallen inside the horizon before the black hole has evaporated. As the patient asymptotic observer can make measurements and obtain information  from the free-falling observer after the black hole has evaporated, she would obtain information  contradicting  information. Thus, we will end up with a consistency paradox in which two observers can exchange information, and disagree on the out come of an experiment. We argue that it is possible to  avoid this paradox by analyzing the  formation of a black hole from collapsing matter. In fact,  using  the
same thought experiment,  we argue that it would not be possible to form a physical black hole from collapsing matter