We present a simple general relation between tree-level exchanges in AdS and dS. This allows to directly import techniques results for Witten diagrams, both position momentum space, boundary correlation functions In this work we apply define Mellin amplitudes spectral representation also derive the conformal block decomposition of dS exchange, direct crossed channels, from their counterparts. T...

In this paper, a new method is presented for spatial resolution enhancement of hyperspectral images (HSI) using spectral unmixing and a Bayesian sparse representation. The proposed method combines the high spectral resolution from the HSI with the high spatial resolution from a multispectral image (MSI) of the same scene and high resolution images from unrelated scenes. The fusion method is bas...

We introduce a translational and rotational invariant local representation for vector fields, which can be employed in the construction of machine learning energy models solids molecules. This allows us to describe, on same footing, fluctuations due atomic motion, longitudinal transverse excitations field, their mutual interplay. The formalism then applied physical systems where total is determ...