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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220106T110000
DTEND;TZID=Europe/Paris:20220106T120000
DTSTAMP:20260411T172526
CREATED:20220620T163007Z
LAST-MODIFIED:20220620T163007Z
UID:7845-1641466800-1641470400@www.lapth.cnrs.fr
SUMMARY:Non-deformation quantisation of integrable systems
DESCRIPTION: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 algebras and look for the ideals there  that are stabilized by the dynamics of the lifted systems. In a reasonable class of candidate ideals\, there are typically very few that are invariant for the first equation in the integrable hierarchy. Once these ideals are picked the challenge is to prove that the whole hierarchy preserves them. We will discuss these ideas using as a key example the hierarchy of the Bogoyavlensky equation. This is a joint work with A. Mikhailov (Leeds) and J. P. Wang (U. of Kent). It is soon to be published but one can already find an introduction here : arXiv:2009.01838\n 
URL:https://www.lapth.cnrs.fr/event/non-deformation-quantisation-of-integrable-systems/
CATEGORIES:Weekly seminars
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220111T110000
DTEND;TZID=Europe/Paris:20220111T120000
DTSTAMP:20260411T172526
CREATED:20220620T162952Z
LAST-MODIFIED:20220620T162952Z
UID:7805-1641898800-1641902400@www.lapth.cnrs.fr
SUMMARY:[Journal Club] A new approach to dark matter from the mass-radius diagram of the Universe
DESCRIPTION:Abstract: \n[2112.03755] A new approach to dark matter from the mass-radius diagram of the Universe (arxiv.org) \nZoom link: \nhttps://cnrs.zoom.us/j/91049381574?pwd=TDZyU3NqT0k4MFk3cUMvc0JuOURCdz09
URL:https://www.lapth.cnrs.fr/event/journal-club-a-new-approach-to-dark-matter-from-the-mass-radius-diagram-of-the-universe/
CATEGORIES:Upcoming Journal Club
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220113T110000
DTEND;TZID=Europe/Paris:20220113T120000
DTSTAMP:20260411T172526
CREATED:20220620T163000Z
LAST-MODIFIED:20220620T163000Z
UID:7822-1642071600-1642075200@www.lapth.cnrs.fr
SUMMARY:Self-Organised Localisation
DESCRIPTION: 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\, quantum phase transitions can act as dynamical attractors. As a result\, the theory parameters are probabilistically localised around the critical value and the Universe finds itself at the edge of a phase transition. We illustrate how self-organised localisation could account for the observed near-criticality of the Higgs self-coupling\, the naturalness of the Higgs mass\, or the smallness of the cosmological constant.
URL:https://www.lapth.cnrs.fr/event/self-organised-localisation/
CATEGORIES:Weekly seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220120T110000
DTEND;TZID=Europe/Paris:20220120T120000
DTSTAMP:20260411T172526
CREATED:20220620T163000Z
LAST-MODIFIED:20220620T163000Z
UID:7821-1642676400-1642680000@www.lapth.cnrs.fr
SUMMARY:Exploring compact binary populations with the Einstein Telescope
DESCRIPTION: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 detections in one year. The coalescence of compact binaries with total mass 20 – 100 $M_{odot}$\, as typical of BH-BH or BH-NS binaries\, will be visible up to redshift $zapprox 20$ and higher\, thus facilitating the understanding of the dark era of the Universe preceding the birth of the first stars. The ET will therefore be a crucial instrument for population studies. We analyzed the compact binaries originating in stars from (i) Pop I and Pop II\, (ii) Pop III\, and (iii) globular clusters\, with single ET using the ET-D design sensitivity for the analysis. We estimate the constraints on the chirp mass\, redshift and merger rate with redshift for these classes of compact object binaries. We conclude that ET as a single instrument is capable of detecting and distinguishing different compact binary populations separated in chirp mass – redshift space. The mass distributions characteristics of such different compact binary populations can also be estimated with single ET. Assuming that sufficient number of binaries will be detected from each of these populations\, we also show  that such populations are distinguishable in the combined bulk detection.
URL:https://www.lapth.cnrs.fr/event/exploring-compact-binary-populations-with-the-einstein-telescope/
CATEGORIES:Weekly seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220125T110000
DTEND;TZID=Europe/Paris:20220125T120000
DTSTAMP:20260411T172526
CREATED:20220620T162955Z
LAST-MODIFIED:20220620T162955Z
UID:7812-1643108400-1643112000@www.lapth.cnrs.fr
SUMMARY:[Journal Club]  Muon g-2 and lepton flavor violation
DESCRIPTION:Abstract: [2004.01200] Vector-Like Leptons and Inert Scalar Triplet: Lepton Flavor Violation\, $g-2$ and Collider Searches (arxiv.org) \n  \nZoom link: \nhttps://cnrs.zoom.us/j/91049381574?pwd=TDZyU3NqT0k4MFk3cUMvc0JuOURCdz09
URL:https://www.lapth.cnrs.fr/event/journal-club-muon-g-2-and-lepton-flavor-violation/
CATEGORIES:Upcoming Journal Club
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