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Spacetime foam in twistor string theory
Sean A. Hartnoll, Giuseppe Policastro
We show how a Kahler spacetime foam in four dimensional conformal (super)gravity may be mapped to twistor spaces carrying the D1 brane charge of the B model topological string theo…
On the stability of naked singularities
Gary W. Gibbons, Sean A. Hartnoll, Akihiro Ishibashi
We study the linearised stability of the nakedly singular negative mass Schwarzschild solution against gravitational perturbations. There is a one parameter family of possible boun…
Properties of some five dimensional Einstein metrics
Gary W. Gibbons, Sean A. Hartnoll, Yukinori Yasui
The volumes, spectra and geodesics of a recently constructed infinite family of five-dimensional inhomogeneous Einstein metrics on the two bundles over are examined. Th…
Deforming baryons into confining strings
Sean A. Hartnoll, Ruben Portugues
We find explicit probe D3-brane solutions in the infrared of the Maldacena-Nunez background. The solutions describe deformed baryon vertices: q external quarks are separated in spa…
Casimir effect and thermodynamics of horizon instabilities
Sean A. Hartnoll
We propose a dual thermodynamic description of a classical instability of generalised black hole spacetimes. From a thermodynamic perspective, the instability is due to negative co…