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6 papers · 2 filters
On the maximal superalgebras of supersymmetric backgrounds
José Figueroa-O'Farrill, Emily Hackett-Jones, George Moutsopoulos +1
In this note we give a precise definition of the notion of a maximal superalgebra of certain types of supersymmetric supergravity backgrounds, including the Freund-Rubin background…
On the Lie-algebraic origin of metric 3-algebras
Paul de Medeiros, José Figueroa-O'Farrill, Elena Méndez-Escobar +1
Since the pioneering work of Bagger-Lambert and Gustavsson, there has been a proliferation of three-dimensional superconformal Chern-Simons theories whose main ingredient is a metr…
From multileg loops to trees (by-passing Feynman's Tree Theorem)
German Rodrigo, Stefano Catani, Tanju Gleisberg +2
We illustrate a duality relation between one-loop integrals and single-cut phase-space integrals. The duality relation is realised by a modification of the customary +i0 prescripti…
Two-point functions with an invariant Planck scale and thermal effects
Ivan Agullo, Jose Navarro-Salas, Gonzalo J. Olmo +1
Nonlinear deformations of relativistic symmetries at the Planck scale are usually addressed in terms of modified dispersion relations. We explore here an alternative route by direc…
Acceleration radiation and the Planck scale
I. Agullo, J. Navarro-Salas, G. J. Olmo +1
A uniformly accelerating observer perceives the Minkowski vacuum state as a thermal bath of radiation. We point out that this field-theory effect can be derived, for any dimension…
BPS preons and the AdS-M-algebra
Igor A. Bandos, Jose A. de Azcarraga
We present here the AdS generalization of BPS preons, which were introduced as the hypothetical constituents of M-theory preserving all but one supersymmetries. Our construction, s…