32 citations · 493 across the 47 of their papers we have counts for
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Perfect fluid quantum Universe in the presence of negative cosmological constant
P. Pedram, M. Mirzaei, S. Jalalzadeh +1
We present perfect fluid Friedmann-Robertson-Walker quantum cosmological models in the presence of negative cosmological constant. In this work the Schutz's variational formalism i…
Quantum Stephani exact cosmological solutions and the selection of time variable
P. Pedram, S. Jalalzadeh, S. S. Gousheh
We study perfect fluid Stephani quantum cosmological model. In the present work the Schutz's variational formalism which recovers the notion of time is applied. This gives rise to…
Stephani-Schutz quantum cosmology
P. Pedram, S. Jalalzadeh, S. S. Gousheh
We study the Stephani quantum cosmological model in the presence of a cosmological constant in radiation dominated Universe. In the present work the Schutz's variational formalism…
Schrödinger-Wheeler-DeWitt equation in chaplygin gas FRW cosmological model
P. Pedram, S. Jalalzadeh, S. S. Gousheh
We present a chaplygin gas Friedmann-Robertson-Walker quantum cosmological model. In this work the Schutz's variational formalism is applied with positive, negative, and zero const…
Canonical wave packets in quantum cosmology
S. S. Gousheh, H. R. Sepangi, P. Pedram +1
We discuss the construction of wave packets resulting from the solutions of a class of Wheeler-DeWitt equations in Robertson-Walker type cosmologies, for arbitrary curvature. We sh…
On signature transition in Robertson-Walker cosmologies
K. Ghafoori-Tabrizi, S. S. Gousheh, H. R. Sepangi
We analyse a classical model of gravitation coupled to a self interacting scalar field. We show that, within the context of this model for Robertson-Walker cosmologies, there exist…