Abstract: We review recent advances in the calculation of the two-loop Feynman integrals which contribute to five-particle scattering amplitudes with one massive leg. These amplitudes are required to provide theoretical […]
As the LHC accumulates data, the need grows for more efficient methods to compute scattering amplitudes. One such method manages to swap the difficult problem of integrating thousands of Feynman […]
We will present a new approach to the problem of quantising integrable systems of differential-difference equations. The main idea is to lift these systems to systems defined on free associative […]
Abstract: A new approach to dark matter from the mass-radius diagram of the Universe (arxiv.org) Zoom link: https://cnrs.zoom.us/j/91049381574?pwd=TDZyU3NqT0k4MFk3cUMvc0JuOURCdz09
I will describe a new phenomenon in quantum cosmology: self-organised localisation. When the fundamental parameters of a theory are functions of a scalar field subject to large fluctuations during inflation, […]
The Einstein Telescope (ET), a wide-band, future 3G gravitational wave detector, is to have expected detection rates of $sim 10^5 - 10^6$ BBH detections and $sim 7 times 10^4$ BNS […]
Abstract: Vector-Like Leptons and Inert Scalar Triplet: Lepton Flavor Violation, $g-2$ and Collider Searches (arxiv.org) Zoom link: https://cnrs.zoom.us/j/91049381574?pwd=TDZyU3NqT0k4MFk3cUMvc0JuOURCdz09
Abstract: The von Neumann entropy is key quantity in quantum information and in the investigation of many-body models. In this talk, we will show that tools from algebraic combinatorics and […]
Contrary to charged lepton degeneracies which are tightly constrained by the measured baryon-to-photon ratio, the allowed values of the primordial neutrino asymmetries cover a large range. In order to study […]
Abstract: https://arxiv.org/abs/2107.04601 Zoom link: https://cnrs.zoom.us/j/91049381574?pwd=TDZyU3NqT0k4MFk3cUMvc0JuOURCdz09
Classical integrable sigma-models form an important class of two-dimensional integrable field theories. It is a long standing belief that such models define renormalisable Quantum Field Theories. In this talk, I will review some recent developments related to this question. For instance, I will discuss some checks of this conjecture in several examples, including theories coupling […]
