Inflating baby-Skyrme branes in six dimensions

Journal Article · Mon Nov 15 04:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.106002· OSTI ID:21503684

Brihaye, Yves; Delsate, Terence; Kodama, Yuta; Sawado, Nobuyuki ^[1]

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1. Theoretical and Mathematical Physics Department, Universite de Mons - UMons, 20, Place du Parc, 7000 Mons (Belgium)

We consider a six-dimensional brane world model, where the brane is described by a localized solution to the baby-Skyrme model extending in the extra dimensions. The branes have a cosmological constant modeled by inflating four-dimensional slices, and we further consider a bulk cosmological constant. We construct solutions numerically and present evidence that the solutions cease to exist for large values of the brane cosmological constant in some particular case. Then we study the stability of the model by considering perturbation of the gravitational part (resp. baby Skyrmion) with fixed matter fields (resp. gravitational background). Our results indicate that the perturbation equations do not admit localized solutions for certain type of perturbation. The stability analysis can be alternatively seen as leading to a particle spectrum; we give mass estimations for the baby-Skyrme perturbation and for the graviton.

• OSTI ID: 21503684
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 10 Vol. 82; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANES
COSMOLOGICAL CONSTANT
DISTURBANCES
EQUATIONS
FOUR-DIMENSIONAL CALCULATIONS
MANY-DIMENSIONAL CALCULATIONS
MASS
MATTER
NUCLEON-NUCLEON POTENTIAL
PARTICLES
PERTURBATION THEORY
POTENTIALS
SIMULATION
SKYRME POTENTIAL
SPECTRA
STABILITY