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8 papers · 2 filters
Superconformal mechanics, black holes, and non-linear realizations
J. A. de Azcarraga, J. M. Izquierdo, J. C. Perez Bueno +1
The OSp(2|2)-invariant planar dynamics of a D=4 superparticle near the horizon of a large mass extreme black hole is described by an N=2 superconformal mechanics, with the SO(2) ch…
Can conformal Transformations change the fate of 2D black holes?
J. Cruz, A. Fabbri, J. Navarro-Salas
By using a classical Liouville-type model of two dimensional dilaton gravity we show that the one-loop theory implies that the fate of a black hole depends on the conformal frame.…
Higher order BRST and anti-BRST operators and cohomology for compact Lie algebras
C. Chryssomalakos, J. A. de Azcarraga, A. J. Macfarlane +1
After defining cohomologically higher order BRST and anti-BRST operators for a compact simple algebra {\cal G}, the associated higher order Laplacians are introduced and the corres…
Finite VEVs from a Large Distance Vacuum Wave Functional
A. Jaramillo, P. Mansfield
We show how to compute vacuum expectation values from derivative expansions of the vacuum wave functional. Such expansions appear to be valid only for slowly varying fields, but by…
Non-perturbative VEVs from a Local Expansion
A. Jaramillo, P. Mansfield
We propose a method for the calculation of vacuum expectation values (VEVs) given a non-trivial, long-distance vacuum wave functional (VWF) of the kind that arises, for example, in…
A Note on Einstein Gravity on AdS and Boundary Conformal Field Theory
J. Navarro-Salas, P. Navarro
We find a simple relation between the first subleading terms in the asymptotic expansion of the metric field in AdS, obeying the Brown-Henneaux boundary conditions, and the str…