Tunnelling from black holes and tunnelling into white holes
arXiv:0704.1746 · doi:10.1016/j.physletb.2008.02.034
Abstract
Hawking radiation is nowadays being understood as tunnelling through black hole horizons. Here, the extension of the Hamilton-Jacobi approach to tunnelling for non-rotating and rotating black holes in different non-singular coordinate systems not only confirms this quantum emission from black holes but also reveals the new phenomenon of absorption into white holes by quantum mechanical tunnelling. The role of a boundary condition of total absorption or emission is also clarified.
REVTeX, 6 pages; changed interpretation for white hole spacetimes; to appear in PLB