2008
García-Compeán, H.; Herrera-Suárez, W.; Itzá-Ortiz, B. A.; Loaiza-Brito, O. D-Branes in Orientifolds and Orbifolds and Kasparov KK-Theory, Journal of High Energy Physics, Issue 12, pp. 007 (2008). Preprinted
Abstract
A classification of D-branes in Type IIB Op? orientifolds and orbifolds in terms of Real and equivariant KK-groups is given. We classify D-branes intersecting orientifold planes from which are recovered some special limits as the spectrum for D-branes on top of Type I Op? orientifold and the bivariant classification of Type I D-branes. The gauge group and transformation properties of the low energy effective field theory living in the corresponding unstable D-brane system are computed by extensive use of Clifford algebras. Some speculations about the existence of other versions of KK-groups, based on physical insights, are proposed. In the orbifold case, some known results concerning D-branes intersecting orbifolds are reproduced and generalized. Finally, the gauge theory of unstable systems in these orbifolds is recovered.
Slow decay of end effects in layered structures with an imperfect interface
PROPAGATION OF ELASTIC WAVES ALONG INTERFACES IN LAYERED BEAMS
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Quasi-periodic breathers in Hamiltonian networks of long-range coupling
Matematicas en la distribucion espacial de poblaciones
BlochFloquet waves and localisation within a heterogeneous waveguide with long cracks
Una Conjetura de Polya y Szego para el Tono Fundamental de Membranas Poligonales
CONTINUOUS AND DISCRETE FLOWS ON OPERATOR ALGEBRAS
REALIZATION OF A SIMPLE HIGHER DIMENSIONAL NONCOMMUTATIVE TORUS AS A TRANSFORMATION GROUP C*-ALGEBRA