Total Quantum Zeno effect and Intelligent States for a two level system   in a squeezed bath
  In this work we show that by frequent measurements of adequately chosen observables, a complete suppression of the decay in an exponentially decaying two level system interacting with a squeezed bath is obtained. The observables for which the effect is observed depend on the the squeezing parameters of the bath. The initial states which display Total Zeno Effect are intelligent states of two conjugate observables associated to the electromagnetic fluctuations of the bath. 
D. Mundarain, M. Orszag and J. Stephany