Dressed states of a two component Bose-Einstein condensate

A condensate with two internal states coupled by external electromagnetic r adiation, is described by coupled Gross-Pitaevskii equations, whose eigenst ates are analogous to the dressed states of quantum optics. We solve for th ese eigenstates numerically in the case of one spatial dimension, and explo re their properties as a function of system parameters. In contrast to the quantum optical case, the condensate dressed states exhibit spatial behavio ur which depends on the system parameters, and can be manipulated by changi ng the cw external field.