Speaker
Madhavan Varadarajan
Description
We consider 4d spherical collapse of a massless scalar field with a novel Areal Radius dependent coupling and obtain the following results:
(i) classical collapse is described by the Vaidya solution (ii) quantum back reaction can be explicitly computed (iii) the semiclassical solution
describes black hole formation, subsequent evaporation along a timelike `dynamical horizon' and a back reaction corrected balance
law at future null infinity. The analysis, supportive of the Ashtekar-Bojowald paradigm, suggests the emergence of all information including
that in the collapsing matter along a quantum extended future null infinity.
