Phantom domain walls

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

Avelino, PP (Autor) FCUP; Ferreira, VMC (Autor) Outra; Menezes, J (Autor) Outra; Sousa, L (Autor) Outra

Revista

Título: Physical Review D

Vol. 96

ISSN: 2470-0010

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 1 Citação

Outras Informações

ID Authenticus: P-00N-0W5

DOI: 10.1103/physrevd.96.043506

Abstract (EN): We consider a model with two real scalar fields which admits phantom domain wall solutions. We investigate the structure and evolution of these phantom domain walls in an expanding homogeneous and isotropic universe. In particular, we show that the increase of the tension of the domain walls with cosmic time, associated to the evolution of the phantom scalar field, is responsible for an additional damping term in their equations of motion. We describe the macroscopic dynamics of phantom domain walls, showing that extended phantom defects whose tension varies on a cosmological time scale cannot be the dark energy.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7