Concept
Hermann Minkowski
Publications associées (29)
Minkowski Distance Based Pilot Protection for Tie Lines Between Offshore Wind Farms and MMC
Offshore wind farms (OWFs) with modular multilevel converter high-voltage dc (MMC-HVdc) have become an important form of renewable energy utilization. However, if a fault occurs at the tie line between the MMC and the OWF, the fault steady-state current at ...
Piscataway2024Well-posedness Issues For the Half-Wave Maps Equation With Hyperbolic And Spherical Targets
This thesis is a study of the global well-posedness of the Cauchy problems for half-wave maps from the Minkowski space of dimension n+1 to the 2-dimensional sphere and the hyperbolic plane. The work is mainly based on the results from Krieger-Sire 17' in ...
EPFL2023The Källén-Lehmann representation in de Sitter spacetime
Manuel Loparco, Kamran Salehi Vaziri
We study two-point functions of symmetric traceless local operators in the bulk of de Sitter spacetime. We derive the Kallen-Lehmann spectral decomposition for any spin and show that unitarity implies its spectral densities are nonnegative. In addition, we ...
New York2023Euclid preparation: XXVIII. Forecasts for ten different higher-order weak lensing statistics
Frédéric Courbin, Gianluca Castignani, Jean-Luc Starck, Austin Chandler Peel, Maurizio Martinelli, Yi Wang, Richard Massey, Fabio Finelli, Marcello Farina
Recent cosmic shear studies have shown that higher-order statistics (HOS) developed by independent teams now outperform standard two-point estimators in terms of statistical precision thanks to their sensitivity to the non-Gaussian features of large-scale ...
EDP SCIENCES S A2023Minkowski's Loop Fractal Antenna Dedicated to Sixth Generation (6G) Communication
In this study, we will discuss the engineering construction of a special sixth generation (6G) antenna, based on the fractal called Minkowski's loop. The antenna has the shape of this known fractal, set at four iterations, to obtain maximum performance. Th ...
MDPI2022Partial discharge localization in power transformers using acoustic time reversal
Marcos Rubinstein, Mohammad Azadifar, Hamidreza Karami, Florent Quentin Aviolat
The localization of partial discharges (PD) is important to monitor the conditioning of high voltage insulator materials. One of the key components in power grids is the high power transformer. Localization of PDs in these pieces of equipment can increase ...
Elsevier2022Ill-posedness of the quasilinear wave equation in the space $H^7/4 (ln H)^-Béta$ in dimension 2+1
We are interested in the well posedness of quasilinear partial differential equations of order two. Motivated by the study of the Einstein equation in relativity theory, there are a number of works dedicated to the local well-posedness issue for the quasil ...
EPFL2021On long time behavior of solutions to nonlinear dispersive equations
In part I, we address the issue of existence of solutions for Cauchy problems involving nonlinear hyperbolic equations for initial data in Sobolev spaces with scaling subcritical regularity. In particular, we analyse nonlinear estimates for null-forms in t ...
EPFL2020Graviton scattering and a sum rule for the c anomaly in 4D CFT
4D CFTs have a scale anomaly characterized by the coefficient c, which appears as the coefficient of logarithmic terms in momentum space correlation functions of the energy-momentum tensor. By studying the CFT contribution to 4-point graviton scattering am ...
SPRINGER2018Concentration compactness for critical radial wave maps
Joachim Krieger, Elisabetta Chiodaroli
We consider radially symmetric, energy critical wave maps from (1 + 2)-dimensional Minkowski space into the unit sphere , m≥1, and prove global regularity and scattering for classical smooth data of finite energy. In addition, we establish a ...
2018