Building on the base of existing telescopes Event Horizon Telescope (EHT) and ALMA, next-generation EHT (ngEHT) aspires to deploy ?10 more stations. The ngEHT targets an angular resolution ?15 microarcseconds. This is achieved using Very Long Baseline Interferometry (VLBI) at shortest radio wavelengths ?1 mm. Submillimeter Array (SMA) both a standalone interferometer station will conduct observ...

We analyse the correlation functions of $\mathrm{U}(N)$-tensor models (or complex tensor models), which turn out to be classified by boundary graphs, and use Ward-Takahashi identity graph calculus developed in [Commun. Math. Phys. (2018) 358: 589] order derive complete tower exact, analytic Schwinger-Dyson equations for with connected graphs. write them explicitly ranks $D=3$ $D=4$. Throughout,...

As soon as a space gravity spectroscopy was successfully performed, for instance by means of semicontinuous ephemeris of LEO GPS tracked satellites, the problem of data validation appeared. It is for this purpose that a stochastic model for the homogeneous and isotropic analysis of measurements, obtained as “directly” measured values in LEO satellite missions (CHAMP, GRACE, GOCE), is studied. A...

A new geometric view of homogeneous isotropic turbulence is contemplated employing the two-point velocity correlation tensor fluctuations. We show that this generates a family pseudo-Riemannian metrics. This enables us to specify geometry singled out Eulerian fluid volume in statistical sense. expose relationship some constructions with quantities arising turbulence.