deSitter brane universeinduced by phantom and quantum effects
Shin'ichi Nojiri, Sergei D. Odintsov
TL;DR
This paper explores how classical and quantum matter, including phantom fields, can induce a deSitter universe in a five-dimensional braneworld model, highlighting the role of quantum effects in cosmological solutions.
Contribution
It demonstrates that negative energy phantom fields with quantum conformal matter can support deSitter brane creation, and compares conditions leading to Anti-deSitter versus deSitter universes.
Findings
Quantum effects support deSitter universe formation with phantom fields.
Pure phantom or dust with quantum effects can lead to Anti-deSitter universe.
Standard energy conditions may be satisfied in phantom scenarios unlike in four-dimensional gravity.
Abstract
Five-dimensional braneworld cosmology with deSitter (inflationary) brane universe induced by classical and quantum matter is discussed. It is shown that negative energy phantom field with quantum CFT supports the creation of deSitter universe. On the same time, pure phantom or dust with quantum effects, or Chaplygin gas with quantum effects may naturally lead to the occurence of Anti-deSitter brane universe but not deSitter one. It is also interesting that unlike to four-dimensional gravity, for phantom with (or without) quantum contribution the standard cosmological energy conditions may be effectively satisfied.
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