Quantum cosmology with k-Essence theory
  A class of $k$-Essence cosmological models, with a power law kinetic term, is quantised in the mini-superspace. It is shown that for a specific configuration, corresponding to a pressureless fluid, a Schr\"odinger-type equation is obtained with the scalar field playing the r\^ole of time. The resulting quantum scenario reveals a bounce, the classical behaviour being recovered asymptotically. 
C.R. Almeida, J.C. Fabris, F. Sbis\'a, Y. Tavakoli
gr-qc astro-ph.CO hep-th