%0 Journal Article
%T Quantum cosmology and the arrow of time
%A Kiefer
%A Claus
%J Brazilian Journal of Physics
%D 2005
%I Scientific Electronic Library Online
%R 10.1590/S0103-97332005000200014
%X although most fundamental laws are invariant under time reversal, experience exhibits the presence of irreversible phenomena - the arrows of time. their origin lies in cosmology, and i argue that only quantum cosmology can provide the appropriate formal framework. after briefly reviewing the formalism, i discuss how a simple and natural boundary condition can lead to the observed arrows of time. this yields at the same time interesting consequences for black holes.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-97332005000200014&lng=en&nrm=iso&tlng=en