Gauss-Bonnet Term on Vacuum Decay
arXiv:0806.2508 · doi:10.1016/j.physletb.2008.11.053
Abstract
We study the effect of the Gauss-Bonnet term on vacuum decay process in the Coleman-De Luccia formalism. The Gauss-Bonnet term has an exponential coupling with the real scalar field, which appears in the low energy effective action of string theories. We calculate numerically the instanton solution, which describes the process of vacuum decay, and obtain the critical size of bubble. We find that the Gauss-Bonnet term has a nontrivial effect on the false vacuum decay, depending on the Gauss-Bonnet coefficient.
18 pages, 7 figures, references added, 2 figures replacement, discussion about thin-wall approximation revised, to appear in PHYS. LETT. B
References in corpus (8)
- Cosmology and Astrophysical Constraints of Gauss-Bonnet Dark Energy
- Circular Polarization of Primordial Gravitational Waves in String-inspired Inflationary Cosmology
- Gauss-Bonnet Quintessence: Background Evolution, Large Scale Structure and Cosmological Constraints
- Thermal derivation of the Coleman-De Luccia tunneling prescription
- Ghost conditions for Gauss-Bonnet cosmologies
- Realizing Scale-invariant Density Perturbations in Low-energy Effective String Theory
- A Wrinkle in Coleman - De Luccia
- The false vacuum bubble nucleation due to a nonminimally coupled scalar field
Cited by in corpus (5)
- Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
- Fubini instantons in Dilatonic Einstein-Gauss-Bonnet theory of gravitation
- Fluctuating solutions for the evolution of domain walls
- Vacuum decay and bubble nucleation in the anti-de Sitter black holes
- Effects of quantum corrections to Lorentzian vacuum transitions in the presence of gravity