Abstract: Abstract: We study a relation between the cosmological singularities in classical and quantum theory, comparing the classical and quantum dynamics in three models possessing the Big-Rip Singularity : the model mainly based on tachyon field and pseudo-tachyon field with respect to the pseudo-space RI ( iR , where ‘R’ is the scale factor of the universe and i 1 ). It was shown that in the pseudo-tachyon model the Hamiltonian is well defined and hence wave function of the universe is not obliged to vanish at the values of the variables, corres...
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