335 citations · 636 across the 8 of their papers we have counts for
7 papers · 1 filter
Gaugino Condensation with a Doubly Suppressed Gravitino Mass
Valeri Lowen, Hans Peter Nilles, Andrea Zanzi
Supersymmetry breakdown via gaugino condensation in heterotic string theory can lead to models with a doubly suppressed gravitino mass. A TeV scale gravitino can emerge from a cond…
The Heterotic Road to the MSSM with R parity
Oleg Lebedev, Hans Peter Nilles, Stuart Raby +4
In a previous paper, referred to as a "Mini-Landscape" search, we explored a "fertile patch" of the heterotic landscape based on a Z6-II orbifold with SO(10) and E6 local GUT struc…
Multiple anomalous U(1)s in heterotic blow-ups
S. Groot Nibbelink, H. P. Nilles, M. Trapletti
The existence of multiple anomalous U(1)s is demonstrated explicitly in a blow-up version of a heterotic Z_3 orbifold. Another blow-up of the same orbifold supports further evidenc…
A Mini-Landscape of Exact MSSM Spectra in Heterotic Orbifolds
Oleg Lebedev, Hans Peter Nilles, Stuart Raby +4
We explore a ``fertile patch'' of the heterotic landscape based on a Z_6-II orbifold with SO(10) and E_6 local GUT structures. We search for models allowing for the exact MSSM spec…
Gaugino Condensation and SUSY Breakdown
Hans Peter Nilles
We review the mechanism of gaugino condensation in the framework of the heterotic string and its extension of Horava and Witten. In particular we emphasize the relati…
Anomalous U(1) gauge symmetries and heterotic-typeI/II string duality
Hans Peter Nilles
Anomalous U(1) gauge symmetries can appear both in heterotic and type I string theories. In the heterotic case we find a single anomalous U(1), while in open string theories severa…