Continuous-wave InGaAsP/InP injection lasers emitting short wavelengths

Abstract

We find mehics admitting supercovariantly constant spinor fields in a sequence of supersymmetric theories of increasing complexity. With a dilaton with varying coupling, or with axion and dilaton in an SL(2, R)-invariant theory we find all slrch metrics: in SU(4) supergravity with axion and dilaton, we find dl such metrics subject to an extra restriction.