Issue |
Europhys. Lett.
Volume 46, Number 2, April II 1999
|
|
---|---|---|
Page(s) | 268 - 271 | |
Section | Geophysics, astronomy and astrophysics | |
DOI | https://doi.org/10.1209/epl/i1999-00255-3 | |
Published online | 01 September 2002 |
Conformally flat universe as quantum back reaction of dilaton-coupled matter
1
Tomsk Pedagogical
University - 634041 Tomsk, Russia
2
Department of Physics and
Mathematics, Tomsk Pedagogical University 634041 Tomsk, Russia
3
Departamento de Física,
Universidad del Valle - A.A. 25360, Cali, Colombia
Received:
25
June
1998
Accepted:
26
January
1999
Using anomaly-induced effective action for a dilaton-coupled 4D scalar matter we discuss quantum cosmological solutions for a conformally flat universe. Back reaction due to dilaton-coupled matter significantly changes the structure of solutions. In one particular case (of constant dilaton) we obtain an inflationary universe solution, but in general dilaton acts against the realizing of a non-singular universe.
PACS: 98.80.Cq – Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.) / 04.50.+h – Gravity in more than four dimensions, Kaluza-Klein theory, unified field theories; alternative theories of gravity
© EDP Sciences, 1999
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