I.F.T.
Almuerzo-Seminario
(Lunch seminar)
Oct 3rd 2000, 15:30 p.m.
Type IIB Orientfolds and non-BPS Branes
Angel Uranga
(CERN)
We describe the construction of orientifolds of type IIB string
compactifications, with supersymmetric closed string sector but
non-supersymmetric open string sector. The latter arises because
cancellation of tadpoels is achieved by the introduction of non-BPS
configurations of D-branes. The resulting models are non-supersymmetric,
but tachyon-free, and stable against decay to supersymmetric
configurations. The models can suffer diverse phase transitions (in which
the non-BPS configuration of branes changes drastically) which we describe
in detail in a concrete example.
Where: Modulo C-XVI, 3rd floor,
Facultad de Ciencias U.A.M., C.U. Cantoblanco, 28049-Madrid
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Last modified: Thu Oct 5 14:06:16 CEST 2000