Cosmological perturbations in antigravity

  title={Cosmological perturbations in antigravity},
  author={Marius Oltean and Robert Brandenberger},
  journal={Physical Review D},
We compute the evolution of cosmological perturbations in a recently proposed Weyl-symmetric theory of two scalar fields with oppositely-signed conformal couplings to Einstein gravity. It is motivated from the minimal conformal extension of the Standard Model, such that one of these scalar fields is the Higgs while the other is a new particle, the dilaton, introduced to make the Higgs mass conformally symmetric. At the background level, the theory admits novel geodesically-complete cyclic… 
4 Citations

Figures and Tables from this paper

From DeWitt initial condition to cosmological quantum entanglement
At the classical level, a linear dilaton action offers an eternal inflation evolution governed by the unified (cosmological constant plus radiation) equation of state &rgr; − 3 P = 4 Λ ?> . At the
Antigravity in F(R) and Brans-Dicke theories
We study antigravity in F(R)-theory originating scalar-tensor theories and also in Brans-Dicke models without cosmological constant. For the F(R) theory case, we obtain the Jordan frame antigravity


The Large Scale Structure of Space-Time
The theory of the causal structure of a general space-time is developed, and is used to study black holes and to prove a number of theorems establishing the inevitability of singualarities under certain conditions.
“A and B”:
Direct fabrication of large micropatterned single crystals. p1205 21 Feb 2003. (news): Academy plucks best biophysicists from a sea of mediocrity. p994 14 Feb 2003.
and N
  • Turok, Phys.Rev. D89, 043515
  • 2014
  • Rept. 215, 203
  • 1992
General relativity
and R
  • Matzner, Phys.Rev. D39, 405
  • 1989
and N
  • Turok, Phys.Rev. D89, 061302
  • 2014
  • Rev. D 70, 043543
  • 2004
Pisma Astron
  • Zh. 7, 67
  • 1981
The Large Scale Structure of Space-Time (Cambridge
  • 1973