We study the homogeneous and time dependent dynamics of the supertube in diverse backgrounds. After deriving a general form of the Hamiltonian in general background, we use a particular gauge fixing, relevant to our analysis to derive a simpler Hamiltonian. We then study the homogeneous solutions of the equations of motion in various backgrounds and study the effective potential in detail.

We show various vanishing theorems for the cohomology groups of compact hermitian man-ifolds for which the Bismut connection has (restricted) holonomy contained in SU (n) and classify all such manifolds of dimension four. In this way we provide necessary conditions for the existence of such structures on hermitian manifolds. Then we apply our results to solutions of the string equations and sho...

We obtain a family of type IIB superstring backgrounds involving RamondRamond fields in ten dimensions starting from a heterotic string background with vanishing gauge fields. To this end the global SL(2, R) symmetry of the type IIB equations of motion is implemented as a solution generating transformation. Using a geometrical analysis we show that the type IIB backgrounds obtained are solution...

We review the motivations for the search of stochastic backgrounds of gravitational waves and we compare the experimental sensitivities that can be reached in the near future with the existing bounds and with the theoretical predictions.

We study the flow from the theory of D2-branes in a G2 holonomy background to M2-branes in a Spin(7) holonomy background. We consider in detail the UV and IR regimes, and the effect of topology change of the background on the field theory. We conjecture a non-Abelian N = 1 mirror symmetry.

Research and development of the XENON100 Detector Upgrade is motivated by the search for Weakly Interacting Massive Particles (WIMPs). The purpose of this upgrade is to lower the overall background significantly and to double the fiducial volume while increasing the fiducial to total volume ratio in order to increase the efficiency of the detector. Monte Carlo simulations using Geant4 were used...

This paper deals with recognition of known 3-D objects in different orientations on cluttered backgrounds. As a recognition technique we apply support vector machines (SVMs). To cope with the cluttered background a tree structure of masks is introduced for each object. SVMs are then computed by masking the training sets with the appropriate masks. Oneand two-class SVMs are combined in the recog...

This paper discusses some results on semiclassical string configurations lying in the IR sector of supergravity backgrounds dual to confining gauge theories. On the gauge theory side, the string states we analyse correspond to Wilson loops, glueballs and KK-hadrons. The 1-loop correction to the classical energy is never subleading, but can be viewed as a coupling dependent rescaling of the dime...

Abstract A treatment of linearized gravity is given in the Randall-Sundrum background. The graviton propagator is found in terms of the scalar propagator, for which an explicit integral expression is provided. This reduces to the four-dimensional propagator at long distances along the brane, and provides estimates of subleading corrections. Asymptotics of the propagator off the brane yields exp...