Phantom domain walls

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Avelino, PP (Author) FCUP; Ferreira, VMC (Author) Other; Menezes, J (Author) Other; Sousa, L (Author) Other

Journal

Title: Physical Review D

Vol. 96

ISSN: 2470-0010

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 1 Citation

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7