The reactions γγ → WL+WL− and γγ → ZLZL in SU(N) strongly interacting theories

We consider axially symmetric static metrics in arbitrary dimension, both with and without a cosmological constant. The most obvious such solutions have an SO(n) group of Killing vectors representing the axial symmetry, although one can also consider abelian groups which represent a flat 'internal space'. We relate such metrics to lower dimensional dilatonic cosmological metrics with a Liouville potential. We also develop a duality relation between vacuum solutions with internal curvature and those with zero internal curvature but a cosmological constant. This duality relation gives a solution generating technique permitting the mapping of different spacetimes. We give a large class of solutions to the vacuum or cosmological constant spacetimes. We comment on the extension of the C-metric to higher dimensions and provide a novel solution for a braneworld black hole.

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Black-brane instability in an arbitrary dimension

Kol

Sorkin

2004

Class. Quantum Grav.

144

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The black-hole black-string system is known to exhibit critical dimensions and therefore it is interesting to vary the spacetime dimension D, treating it as a parameter of the system. We derive the large D asymptotics of the critical, i.e. marginally stable, string following an earlier numerical analysis. For a background with an arbitrary compactification manifold we give an expression for the critical mass of a corresponding black brane. This expression is completely explicit for T n , the n dimensional torus of an arbitrary shape. An indication is given that by employing a higher dimensional torus, rather than a single compact dimension, the total critical dimension above which the nature of the black-brane black-hole phase transition changes from sudden to smooth could be as low as D ≤ 11.

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The reactions γγ → WL+WL− and γγ → ZLZL in SU(N) strongly interacting theories

Abstract: Building on recent phenomenology of γγ → ππ, we discuss the expectation for two photon production of longitudinal gauge boson pairs in SU (N ) technicolor theories. The treatment involves a matching of dispersive techniques with the methodology of chiral perturbation theory.

Cited by 12 publications

References 18 publications

Phases of Kaluza–Klein black holes

Phases of Kaluza–Klein black holes

Axisymmetric metrics in arbitrary dimensions

Black-brane instability in an arbitrary dimension

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