34 citations · 91 across the 7 of their papers we have counts for
7 papers
Heterotic warped Eguchi-Hanson spectra with five-branes and line bundles
Luca Carlevaro, Stefan Groot Nibbelink
We consider heterotic strings on a warped Eguchi-Hanson space with five-brane and line bundle gauge fluxes. The heterotic string admits an exact CFT description in terms of an asym…
Gauge Threshold Corrections for N = 2 Heterotic Local Models with Flux, and Mock Modular Forms
Luca Carlevaro, Dan Israel
We determine threshold corrections to the gauge couplings in local models of N=2 smooth heterotic compactifications with torsion, given by the direct product of a warped Eguchi-Han…
Local models of heterotic flux vacua: spacetime and worldsheet aspects
Luca Carlevaro, Dan Israel
We report on some recent progress in understanding heterotic flux compactifications, from a worldsheet perspective mainly. We consider local models consisting in torus fibration ov…
Heterotic Resolved Conifolds with Torsion, from Supergravity to CFT
Luca Carlevaro, Dan Israel
We obtain a family of heterotic supergravity backgrounds describing non-Kahler warped conifolds with three-form flux and an Abelian gauge bundle, preserving N=1 supersymmetry in fo…
Hidden Borcherds symmetries in Z_n orbifolds of M-theory and magnetized D-branes in type 0' orientifolds
Maxime Bagnoud, Luca Carlevaro
We study T^{11-D-q}xT^q/Z_n orbifold compactifications of 11D supergravity and M-theory by a purely algebraic method. Using the mapping between scalar fields of toroidally compacti…
Five-Brane Thresholds and Membrane Instantons in Four-Dimensional Heterotic M-Theory
Luca Carlevaro, Jean-Pierre Derendinger
The effective four-dimensional supergravity of M-theory compactified on the orbifold S^1/Z_2 and a Calabi-Yau threefold includes in general moduli supermultiplets describing massle…
Supermatrix models for M-theory based on osp(1|32,R)
Maxime Bagnoud, Luca Carlevaro, Adel Bilal
Taking seriously the hypothesis that the full symmetry algebra of M-theory is osp(1|32,R), we derive the supersymmetry transformations for all fields that appear in 11- and 12-dime…