249 citations · 2k across the 68 of their papers we have counts for
7 papers · 1 filter
String corrections to gauge couplings from a field theory approach
D. M. Ghilencea, S. Groot Nibbelink
An effective field theory approach is introduced to compute one-loop radiative corrections to the gauge couplings due to Kaluza-Klein states associated with a two-torus compactific…
Localization and anomalies on orbifolds
S. Groot Nibbelink, H. P. Nilles
In this talk we discus some properties of supersymmetric theories on orbifolds in five dimensions. The structure of FI--tadpoles may lead to (strong) localization of charged bulk s…
Localized anomalies in heterotic orbifolds
F. Gmeiner, S. Groot Nibbelink, H. P. Nilles +2
Recently spatially localized anomalies have been considered in higher dimensional field theories. The question of the quantum consistency and stability of these theories needs furt…
Higgs mass sensitivity and localization due to Fayet-Iliopoulos terms on 5D orbifolds
S. Groot Nibbelink
In this talk we review calculations of FI-tadpoles in 5 dimensional (non-)supersymmetric orbifold theories. Some consequences of these tadpoles are discussed: quadratic Higgs-mass…
Instabilities of bulk fields and anomalies on orbifolds
S. Groot Nibbelink, H. P. Nilles, M. Olechowski
Bulk matter modes of higher dimensional models generically become unstable in the presence of additional matter multiplets at the branes. This quantum instability is driven by loca…
String Threshold corrections from Field Theory
D. M. Ghilencea, S. Groot Nibbelink
A field theory approach to summing threshold effects to the gauge couplings in a two-torus compactification is presented and the link with the (heterotic) string calculation is car…
Spontaneous localization of bulk matter fields
S. Groot Nibbelink, H. P. Nilles, M. Olechowski
We study models compactified on S^1/Z_2 with bulk and brane matter fields charged under U(1) gauge symmetry. We calculate the FI-terms and show by minimizing the resulting potentia…