D-term inflation without cosmic strings
High Energy Physics - Theory
2009-11-10 v2 Astrophysics
High Energy Physics - Phenomenology
Abstract
We present a superstring-inspired version of D-term inflation which does not lead to cosmic string formation and appears to satisfy the current CMB constraints. It differs from minimal D-term inflation by a second pair of charged superfields which makes the strings non-topological (semilocal). The strings are also BPS, so the scenario is expected to survive supergravity corrections. The second pair of charged superfields arises naturally in several brane and conifold scenarios, but its effect on cosmic string formation had not been noticed so far.
Keywords
Cite
@article{arxiv.hep-th/0402032,
title = {D-term inflation without cosmic strings},
author = {J. Urrestilla and A. Achucarro and A. C. Davis},
journal= {arXiv preprint arXiv:hep-th/0402032},
year = {2009}
}
Comments
10 pages, uses REVTEX 4; minor typos corrected, references added, version to be published