Topological defects in contracting universes

• Tipo: Artigo em Revista Científica Internacional
• Data: 2002

Autores

Avelino, PP (Autor) FCUP; Martins, CJAP (Autor) Outra; C. dos Santos (Autor) FCUP; Shellard, EPS (Autor) Outra

Revista

Título: Physical Review Letters

Vol. 89

Páginas: 2713011-2713014

ISSN: 0031-9007

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 10 Citações

Scopus - 11 Citações

Outras Informações

ID Authenticus: P-000-M0T

DOI: 10.1103/physrevlett.89.271301

Abstract (EN): We study the behavior and consequences of cosmic string networks in contracting universes. They approximately behave during the collapse phase as radiation fluids. Scaling solutions describing this are derived and tested against high-resolution numerical simulations. A string network in a contracting universe, together with the gravitational radiation it generates, can affect the dynamics of the universe both locally and globally and be an important source of radiation, entropy, and inhomogeneity. We discuss possible implications for bouncing and cyclic models.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4