Topological defects in contracting universes

• Type: Article in International Scientific Journal
• Date: 2002

Authors

Avelino, PP (Author) FCUP; Martins, CJAP (Author) Other; C. dos Santos (Author) FCUP; Shellard, EPS (Author) Other

Journal

Title: Physical Review Letters

Vol. 89

Pages: 2713011-2713014

ISSN: 0031-9007

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 10 Citations

Scopus - 11 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4