Work

Phantom domain walls

Year: 2017

Type: article

Abstract: 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.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.96.043506

Authors: P. P. Avelino, V. M. C. Ferreira, J. Menezes, L. Sousa

Institutions: Universidade do Porto, Institute of Astrophysics and Space Sciences, Centro de Astrofísica da Universidade do Porto

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Federación Española de Enfermedades Raras, Fundação para a Ciência e a Tecnologia, European Social Fund

Awards: G1819696421, Instituto de Astrofísica e Ciências do Espaço, G8584722183