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13 papers · 2 filters
Holographic Viscosity of Fundamental Matter
David Mateos, Robert C. Myers, Rowan M. Thomson
A holographic dual of a finite-temperature SU(N_c) gauge theory with a small number of flavours N_f << N_c typically contains D-branes in a black hole background. By considering th…
On the Standard Approach to Renormalization Group Improvement
F. A. Chishtie, V. Elias, R. B. Mann +2
Two approaches to renormalization-group improvement are examined: the substitution of the solutions of running couplings, masses and fields into perturbatively computed quantities…
Note on counterterms in asymptotically flat spacetimes
Dumitru Astefanesei, Robert B. Mann, Cristian Stelea
We consider in more detail the covariant counterterm proposed by Mann and Marolf in asymptotically flat spacetimes. With an eye to specific practical computations using this counte…
Spectroscopy of a canonically quantized horizon
Mohammad H. Ansari
Deviations from Hawking's thermal black hole spectrum, observable for macroscopic black holes, are derived from a model of a quantum horizon in loop quantum gravity. These arise fr…
Bianchi Type IX M-Branes
A. M. Ghezelbash
We present new M2 and M5 brane solutions in M-theory based on transverse self-dual Bianchi type IX space. All the other recently M2 and M5 branes constructed on transverse self-dua…
Nonabelian solutions in AdS_4 and d=11 supergravity
Robert B. Mann, Eugen Radu, D. H. Tchrakian
We consider solutions of the four dimensional Einstein-Yang-Mills system with a negative cosmological constant , where is the nonabelian gauge coupling constant. This…