Concept
Métrique d'Alcubierre
Publications associées (15)
Model Predictive Control for Multi-Agent Systems under Limited Communication and Time-Varying Network Topology
Danilo Saccani, Melanie Nicole Zeilinger
In control system networks, reconfiguration of the controller when agents are leaving or joining the network is still an open challenge, in particular when operation constraints that depend on each agent's behavior must be met. Drawing our motivation from ...
New York2023Preheating in Palatini Higgs inflation on the lattice
Andrey Shkerin, Inar Timiryasov, Juraj Klaric, Adrien Florio
We study preheating following Higgs inflation in the Palatini formulation of gravity. We numerically evolve perturbations of the radial mode of the Higgs field and that of three scalars modeling the gauge bosons. We compare the two non-perturbative mechani ...
IOP Publishing Ltd2022Comment on “Straight lightning as a signature of macroscopic dark matter”
In the discussed paper [N. Starkman, H. Winch, J. S. Sidhu, and G. Starkman, Straight lightning as a signature of macroscopic dark matter, Phys. Rev. D 103, 063024 (2021)], the authors have made several assumptions and statements concerning the initiation ...
2022Superluminal Motion-Assisted Four-Dimensional Light-in-Flight Imaging
Edoardo Charbon, Andrei Ardelean, Ming-Lo Wu, Kazuhiro Morimoto
Advances in high-speed imaging techniques have opened new possibilities for capturing ultrafast phenomena such as light propagation in air or through media. Capturing light in flight in three-dimensional xyt space has been reported based on various types o ...
AMER PHYSICAL SOC2021Linearized supergravity with a dynamical preferred frame
We study supersymmetric extension of the Einstein-aether gravitational model where local Lorentz invariance is broken down to the subgroup of spatial rotations by a vacuum expectation value of a timelike vector field called aether. Embedding aether into a ...
SPRINGER2021Speed and Stability Limits for High-Speed Bearingless Disc Drives
Yves Perriard, Douglas Martins Araujo
Increasing material costs and emerging applications have steered research trends towards compacter and therefore faster drives. The arising challenges of miniaturization have made contactless magnetic levitation increasingly attractive, which offer practic ...
IEEE2018On constraining the speed of gravitational waves following GW150914
Sergey Sibiryakov, Diego Blas Temino, Mikhail Ivanov
We point out that the observed time delay between the detection of the signal at the Hanford and Livingston LIGO sites from the gravitational wave event GW150914 places an upper bound on the speed of propagation of gravitational waves, c (gw) ae(2) 1.7 in ...
Springer Verlag2016Thermodynamics in the hydrologic response: Travel time formulation and application to Alpine catchments
Andrea Rinaldo, Michael Lehning, Bettina Schaefli, Francesco Comola
This paper presents a spatially-explicit model for hydro-thermal response simulations of Alpine catchments, accounting for advective and non-advective energy fluxes in stream networks characterized by arbitrary degrees of geomorphological complexity. The r ...
American Geophysical Union2015Tracking residence times in hydrological systems: forward and backward formulations
Andrea Rinaldo, Paolo Benettin, Gianluca Botter
In recent years, several papers contributed to the development and clarification of key theoretical issues underlying the formulation of transport by travel time distributions in catchments. Such a formulation provides a robust description of the temporal ...
Wiley-Blackwell2015Horava gravity versus thermodynamics: The black hole case
Sergey Sibiryakov, Diego Blas Temino
Under broad assumptions, breaking of Lorentz invariance in gravitational theories leads to tension with unitarity because it allows for processes that apparently violate the second law of thermodynamics. The crucial ingredient of this argument is the exist ...
2011