• DOI:10.1007/s10714-007-0454-y
• Corpus ID: 14563670

Wilson line inflation

@article{Avgoustidis2006WilsonLI,
  title={Wilson line inflation},
  author={A. Avgoustidis and Daniel Cremades and F. Quevedo},
  journal={General Relativity and Gravitation},
  year={2006},
  volume={39},
  pages={1203-1234}
}

• A. Avgoustidis, D. Cremades, F. Quevedo
• Published 5 June 2006
• Physics
• General Relativity and Gravitation

We present a general setup for inflation in string theory where the inflaton field corresponds to Wilson lines in compact space in the presence of magnetic fluxes. T-dualities and limits on the value of the magnetic fluxes relate this system to the standard D-brane inflation scenarios, such as brane-antibrane inflation, D3/D7 brane inflation and different configurations of branes at angles. This can then be seen as a generalised approach to inflation from open string modes. Inflation ends when the Wilson lines achieve a critical value and an open string mode becomes tachyonic. Then hybrid-like inflation, including its cosmic string remnants, is realized in string theory beyond the brane annihilation picture. Our formalism can be incorporated within flux-induced moduli stabilisation mechanisms in type IIB strings. Also, contrary to the standard D-brane separation, Wilson lines can be considered in heterotic string models. We provide explicit examples to illustrate similarities and differences of our mechanism to D-brane inflation. In particular we present an example in which the η problem present in brane inflation models is absent in our case. We have examples with both blue and red tilted spectral index and remnant cosmic string tension $$G\mu \lesssim 10^{-7}$$ .