The accepted wisdom is that a large fraction of our Universe is comprised of particle dark matter. Modified models of gravity have been studied for a long time, but the notion of emergent spacetime has given this approach a new direction. Verlinde’s emergent gravity (EG) proposal has revived the discussion, and since last November there have several works in the literature testing this new scenario.
A number of observations and theoretical insights suggest that the theory of general relativity (GR) may not be correct at all scales. On one hand, most of the Universe we observe may be filled with mysterious forms of energy and matter. On the other, hints from black hole physics and quantum gravity theories such as string theory point to a very different description of spacetime to current models. In this context, the notion of emergent spacetime has been proposed [1; 2], its principles based on black hole thermodynamics and quantum information theory.
The LPNHE Laboratory (Paris) and the Subatech Laboratory (Nantes) have immediate openings for two postdoctoral appointments for work on XENON1T experiment during two years.
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Neutrinos are the most elusive particles of the Standard Model (SM) of particle physics. They can be produced in a number of reactions, such as natural radioactivity in the earth (geo-neutrinos), nuclear fission in reactors (reactor neutrinos), supernova explosions (supernova neutrinos), and fusion processes in the Sun (solar neutrinos).
Neutrinos arise in three flavours: electron, muon and tau. The discovery of neutrino oscillations between these flavours implies that neutrinos are massive particles. The SM predicts massless neutrinos, and therefore neutrino oscillations imply physics beyond the SM. This motivates the study of neutrino processes beyond the SM framework, for instance, non-standard interactions.
