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17 papers · 1 filter
Massless geodesics in as a superintegrable system
Emilio Rubín de Celis, Osvaldo Santillán
A Carter like constant for the geodesic motion in the Einstein-Sasaki geometries is presented. This constant is functionally independent with respect to the five known con…
Self-dual formulations of d=3 gravity theories in the path-integral framework
P. J. Arias, F. A. Schaposnik
We study the connection, at the quantum level, between d=2+1 dimensional self-dual models with actions of growing (from first to fourth) order, governing the dynamics of helicity +…
Lorentzian AdS, Wormholes and Holography
Raúl E. Arias, Marcelo Botta-Cantcheff, Guillermo A. Silva
We investigate the structure of two point functions for the QFT dual to an asymptotically Lorentzian AdS-wormhole. The bulk geometry is a solution of 5-dimensional second order Ein…
Past and future blurring at fundamental length scale
M. J. Neves, C. Farina, M. V. Cougo-Pinto
We obtain the -deformed versions of the retarded and advanced Green functions and show that their causality properties are blurred in a time interval of the order of a length pa…
Kaon Decays from AdS/QCD
Martin Schvellinger
We briefly review one of the current applications of the AdS/CFT correspondence known as AdS/QCD and discuss about the calculation of four-point quark-flavour current correlation f…
Compact self-gravitating solutions of quartic (K) fields in brane cosmology
C. Adam, N. Grandi, P. Klimas +2
Recently we proposed that K fields, that is, fields with a non-standard kinetic term, may provide a mechanism for the generation of thick branes, based on the following observation…