PT Journal
AU Anderson, PR
   Siahmazgi, SG
   Clark, RD
   Fabbri, A
TI Method to compute the stress-energy tensor for a quantized scalar field when a black hole forms from the collapse of a null shell
SO Physical Review D
JI Phys. Rev. D
PY 2020
BP 125035
EP 26pp
VL 102
IS 12
DI 10.1103/PhysRevD.102.125035
LA Spanish
AB A method is given to compute the stress-energy tensor for a massless minimally coupled scalar field in a spacetime where a black hole forms from the collapse of a spherically symmetric null shell in four dimensions. Part of the method involves matching the modes for the in vacuum state to a complete set of modes in Schwarzschild spacetime. The other part involves subtracting from the unrenormalized expression for the stress-energy tensor when the field is in the in vacuum state, the corresponding expression when the field is in the Unruh state and adding to this the renormalized stress-energy tensor for the field in the Unruh state. The method is shown to work in the two-dimensional case where the results are known.
ER