304 citations · 2.4k across the 92 of their papers we have counts for
4 papers · 1 filter
Is there chaos in string cosmology?
John D. Barrow, Mariusz P. Dabrowski
Bianchi type IX, 'Mixmaster' universes are investigated in low-energy-effective-action string cosmology. We show that, unlike in general relativity, there is no chaos in these stri…
Strings in Homogeneous Background Spacetimes
Mariusz P. Dabrowski, Arne L. Larsen
The string equations of motion for some homogeneous (Kantowski-Sachs, Bianchi I and Bianchi IX) background spacetimes are given, and solved explicitly in some simple cases. This is…
The Hubble Diagram of Type Ia Supernovae in Non-Uniform Pressure Universes
M. P. Dabrowski, M. A. Hendry
We use the redshift-magnitude relation, as derived by Dcabrowski (1995), for the two exact non-uniform pressure spherically symmetric Stephani universes with the observer positione…
Boundary Conditions in Quantum String Cosmology
Mariusz P. Dabrowski, Claus Kiefer
We discuss in detail how to consistently impose boundary conditions in quantum string cosmology. Since a classical time parameter is absent in quantum gravity, such conditions must…