Corpus ID: 18357447

Cosmological Implications of the Supergravity Tracking Potential

  title={Cosmological Implications of the Supergravity Tracking Potential},
  author={Philippe Brax and J{\'e}r{\^o}me Martin},
  journal={arXiv: Astrophysics},
It is demonstrated that any realistic model of quintessence should be based on Supergravity since, when the scalar field is on tracks today, $Q\approx m_{\rm Pl}$. This improves the agreement between theoretical predictions and the current observations. In particular, a generic property is that ratio $\omega_{\rm Q}\equiv p_{\rm Q}/\rho_{\rm Q}$ is pushed towards -1. A string-inspired model is proposed where the potential is given by $V(Q)= \frac{\Lambda ^{4+\alpha}}{Q^{\alpha}}e^{\frac{\kappa… Expand
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