Concept
Preferred frame
Publications associées (32)
Magnetogenesis in Higgs-Starobinsky inflation
In the framework of mixed Higgs-Starobinsky inflation, we consider the generation of Abelian gauge fields due to their nonminimal coupling to gravity (in two different formulations of gravity-metric and Palatini). We couple the gauge-field invariants F mu ...
2022Historical City Maps Semantic Segmentation Dataset
This dataset includes a total of 635 annotated image patches from historical city maps. It is designed for the semantic segmentation of the maps into 5 semantic classes (building blocks, non-built, water, road network, background frame). 330 patches are ta ...
EPFL Infoscience2021Foucault pendulum properties of spherical oscillators
Simon Nessim Henein, Ilan Vardi, Patrick Robert Flückiger
The Foucault pendulum provides a demonstration of the turning of the Earth. The principle at work is that linear oscillations of a two-degree-of-freedom isotropic harmonic oscillator remain unchanged in an inertial frame of reference, so appear to precess ...
2020Foucault pendulum properties of spherical oscillators
Simon Nessim Henein, Ilan Vardi, Patrick Robert Flückiger
In 1851 Léon Foucault created a sensation with his pendulum providing a direct demonstration of the turning of the Earth. This simple device consists of a pendulum which is launched in a purely planar orbit. Following Mach's principle of inertia, the mass ...
euspen2020Frame (in)equivalence in quantum field theory and cosmology
We revisit the question of frame equivalence in Quantum Field Theory in the presence of gravity, a situation of relevance for theories aiming to describe the early Universe dynamics and Inflation in particular. We show that in those cases, the path integra ...
Springer2019