  Using dimensional regularization, we compute the one-loop quantum and thermal
corrections to the profile of the bosonic 1+1-dimensional phi^4 kink, the
sine-Gordon kink and the CP^1 kink, and higher-dimensional phi^4 kink domain
walls. Starting from the Heisenberg field equation in the presence of the
nontrivial kink background we derive analytically results for the
temperature-dependent mean field which display the onset of the melting of
kinks as the system is heated towards a symmetry restoring phase transition.
The result is shown to simplify significantly when expressed in terms of a
self-consistently defined thermal screening mass. In the case of domain walls,
we find infrared singularities in the kink profile, which corresponds to
interface roughening depending on the system size. Finally we calculate the
energy density profile of phi^4 kink domain walls and find that in contrast to
the total surface tension the local distribution requires composite operator
renormalization in 3+1 dimensions.
