110 citations · 424 across the 14 of their papers we have counts for
5 papers · 1 filter
Nonperturbative corrections to 4D string theory effective actions from SL(2,Z) duality and supersymmetry
Daniel Robles-Llana, Martin Rocek, Frank Saueressig +2
We find the D(-1) and D1-brane instanton contributions to the hypermultiplet moduli space of type IIB string compactifications on Calabi-Yau threefolds. These combine with known pe…
SIM(2) and Superspace
Ulf Lindstrom, Martin Rocek
In this brief note we give a superspace description of the supersymmetric nonlocal Lorentz noninvariant actions recently proposed by Cohen and Freedman. This leads us to discover s…
A Gravitational Effective Action on a Finite Triangulation as a Discrete Model of Continuous Concepts
Albert Ko, Martin Rocek
We recall how the Gauss-Bonnet theorem can be interpreted as a finite dimen- sional index theorem. We describe the construction given in hep-th/0512293 of a function that can be in…
Quaternion-Kahler spaces, hyperkahler cones, and the c-map
Martin Rocek, Cumrun Vafa, Stefan Vandoren
Under the action of the c-map, special Kahler manifolds are mapped into a class of quaternion-Kahler spaces. We explicitly construct the corresponding Swann bundle or hyperkahler c…
A Gravitational Effective Action on a Finite Triangulation
Albert Ko, Martin Rocek
We construct a function of the edge-lengths of a triangulated surface whose variation under a rescaling of all the edges that meet at a vertex is the defect angle at that vertex. W…