Cosmic strings from pseudo-anomalous Fayet-Iliopoulos U(1) in D3/D7 brane inflation
arXiv:1008.0087 · doi:10.1007/JHEP10(2010)075
Abstract
We examine the consequences of recent developments on Fayet-Iliopoulos (FI) terms for D-term inflationary models. There is currently no known way to couple constant FI terms to supergravity consistently; only field-dependent FI terms are allowed. These are natural in string theory and we argue that the FI term in D3/D7 inflation turns out to be of this type, corresponding to a pseudo-anomalous U(1). T he anomaly is canceled by the Green-Schwarz mechanism in 4 dimensions. Inflation proceeds as usual, except that the scale is set by the GS parameter. Cosmic strings resulting from a pseudo-anomalous U(1) have potentially interesting characteristics. Originally expected to be global, they turn out to be local in the string theory context and can support currents. We outline the nature of these strings, discuss bounds on their formation, and summarize resulting cosmological consequences.
arXiv comment10 pages; minor changes to match published version
References in corpus (23)
- Branes Intersecting at Angles
- Cosmic F- and D-strings
- D-Term Inflation
- Fayet-Iliopoulos Terms in Supergravity and Cosmology
- Cosmic Strings and Superstrings
- String Theory and Hybrid Inflation/Acceleration
- D3/D7 Brane Inflation and Semilocal Strings
- Fundamental cosmic strings
- N=1 Supersymmetric Cosmic Strings
- Comments on the Fayet-Iliopoulos Term in Field Theory and Supergravity
- Dynamical supersymmetry breaking in models with a Green-Schwarz mechanism
- D-term inflation without cosmic strings
- -term inflation, cosmic strings, and consistency with cosmic microwave background measurement
- Cosmic Strings and Cosmic Superstrings
- Why do we live in 3+1 dimensions?
- Update of D3/D7-Brane Inflation on K3 x T^2/Z_2
- Cosmic Superstrings
- D-term inflation in non-minimal supergravity
- Global vs local cosmic strings from pseudo-anomalous U(1)
- Local Axion Cosmic Strings from Superstrings
- Chiral cosmic strings in supergravity
- Space-time dimensionality from brane collisions
- Fermionic Zero Modes of Supergravity Cosmic Strings