He shows that black holes will radiate particles with a blackbody spectrum which can cause black hole evaporation
Editors. "Stephen Hawking applies quantum field theory to black hole spacetimes". The Literary Encyclopedia. First published 01 May 2009; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=6717, accessed 18 April 2015.]