One-loop corrections to the classical soliton mass are evaluated for t
he nonlinear-sigma model, and the Skyrme model, without and with a six
th-order extension. The chiral-covariant renormalization scheme follow
s closely the procedure used in chiral perturbation theory to make sur
e that the resulting effective action is compatible with the results o
btained in ChPT up to chiral order four. The magnitude of the chiral g
radients involved in the soliton profile requires that counterterms an
d finite loop corrections are evaluated to all chiral orders. In semic
lassical approximation, traces are replaced by phase-space integrals.
This allows for analytical expressions for zero-mode and continuum con
tributions to the Casimir energy and for the counterterms. The numeric
al results confirm-the conjecture that the loop corrections are domina
ted by the zero-mode contributions and support the previous result of
Moussallam that for the ChPT-action augmented by a standard sixth-orde
r extension, the baryon mass is near the actual nucleon mass.