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5 papers · 2 filters
Thermodynamics of Asymptotically Conical Geometries
Mirjam Cvetic, Gary W. Gibbons, Zain H. Saleem
We study the thermodynamical properties of a class of asymptotically conical (AC) geometries known as "subtracted geometries". We derive the mass and angular momentum from the regu…
The curious case of large-N expansions on a (pseudo)sphere
Alexander M. Polyakov, Zain H. Saleem, James Stokes
We elucidate the large-N dynamics of one-dimensional sigma models with spherical and hyperbolic target spaces and find a duality between the Lagrange multiplier and the angular mom…
Vacuum Polarization of STU Black Holes and their Subtracted Geometry Limit
Mirjam Cvetic, Gary W. Gibbons, Zain H. Saleem +1
We study the vacuum polarization of a massless minimally coupled scalar field at the horizon of four-charge STU black holes. We compare the results for the standard asymptotically…
Accelerating black holes, spin-3/2 fields and C-metric
Hai Lin, K. Saifullah, Shing-Tung Yau
We consider spin-3/2 particles on the background of general accelerating black holes and C-metric. The Rarita-Schwinger equations of spin-3/2 particles are analyzed on these backgr…
Quasi-Normal Modes for Subtracted Rotating and Magnetised Geometries
M. Cvetic, G. W. Gibbons, Z. H. Saleem
We obtain explicit separable solutions of the wave equation of massless minimally coupled scalar fields in the subtracted geometry of four-dimensional rotating and Melvin (magnetis…