Type IIB moduli stabilisation, inflation and waterfall fields

Ignatios Antoniadis (1) , Osmin Lacombe (1) , George Leontaris

1 LPTHE - Laboratoire de Physique Théorique et Hautes Energies

We present a string realisation of the hybrid inflationary scenario within type IIB effective string theory constructions and a geometric configuration of intersecting D7 branes. A metastable de Sitter minimum is ensured by perturbative logarithmic corrections and D-term contributions from abelian factors associated with the D7 branes. The inflaton is identified with the internal volume modulus whereas possible waterfall fields correspond to excitations of open strings attached to the magnetised D7 branes. Incorporating contributions of these fields in the scalar potential, inflation stops and the metastable vacuum settles to a minimum with the observed tuneable value of the cosmological constant.

Mots clés: moduli; stability; inflation; hybrid; potential; scalar; string; open; D-brane; abelian; inflaton; string model; excited state; cosmological constant; de Sitter; D-term

Domaines: Physique des Hautes Energies - Théorie [hep-th]

Ignatios Antoniadis, Osmin Lacombe, George Leontaris. Type IIB moduli stabilisation, inflation and waterfall fields. 21st Hellenic School and Workshops on Elementary Particle Physics and Gravity, Aug 2021, Corfu, Greece. pp.089, ⟨10.22323/1.406.0089⟩. ⟨hal-03878832⟩