BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//LAPTh - ECPv6.15.17//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:LAPTh
X-ORIGINAL-URL:https://www.lapth.cnrs.fr/en/
X-WR-CALDESC:Events for LAPTh
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
TZNAME:UTC
DTSTART:20250101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=UTC:20260114T150000
DTEND;TZID=UTC:20260114T160000
DTSTAMP:20260411T060217
CREATED:20260105T155315Z
LAST-MODIFIED:20260114T155334Z
UID:14284-1768402800-1768406400@www.lapth.cnrs.fr
SUMMARY:Alek Bedroya - Holographic Constraints on the String Landscape
DESCRIPTION:Speakers: Alek Bedroya (Princeton University)\n.\nAbstract: I will discuss scale separation in top-down string theory constructions of AdS vacua\, focusing on proposals based on compactifications on Ricci-flat manifolds such as DGKT and KKLT. I will then present a general argument that the putative CFT duals of such scale-separated AdS vacua cannot emerge as infrared limits of any brane configuration in string theory\, implying that such vacua are unlikely to be UV complete. This explains why stable AdS vacua in string theory are essentially higher-dimensional in nature. If time permits\, I will conclude with further holographic constraints on scalar potentials with implications for cosmology.\nLink: Zoom\nAnLy: https://sites.google.com/view/anlystringsandfields\n \n \nhttps://indico.in2p3.fr/event/38157/
URL:https://www.lapth.cnrs.fr/en/event/alek-bedroya-tba/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260115T100000
DTEND;TZID=UTC:20260115T110000
DTSTAMP:20260411T060217
CREATED:20251208T140829Z
LAST-MODIFIED:20260115T102333Z
UID:13096-1768471200-1768474800@www.lapth.cnrs.fr
SUMMARY:Testing unification and the heterotic string with the axion-photon coupling
DESCRIPTION:Speakers: Mario Reig Lopez (Cern)\nThe topological nature of axion couplings to gauge bosons offers unique opportunities to obtain information about the UV limit of the SM. I will discuss why the discovery of an axion-like particle above the QCD line would rule out grand unified theories and the perturbative heterotic string.\nBased on 2206.07053\, 2410.03820 and 2509.08042.\nhttps://indico.in2p3.fr/event/37948/
URL:https://www.lapth.cnrs.fr/en/event/mario-reig-lopez/
LOCATION:Salle des Sommets
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260126T080000
DTEND;TZID=UTC:20260126T170000
DTSTAMP:20260411T060217
CREATED:20251204T141918Z
LAST-MODIFIED:20260126T163832Z
UID:12909-1769414400-1769446800@www.lapth.cnrs.fr
SUMMARY:Geneviève Fest
DESCRIPTION:On the occasion of her retirement\, a workshop to celebrate Geneviève Bélanger’s contributions to research\, group building\, and mentoring activities.\nA tentative timetable is now available. Note that in addition to the scheduled review talks\, there will be two “open mic” sessions open to all participants for their personal recollection\, anecdotes\, etc.\nTo join by Zoom:  https://cern.zoom.us/j/63941389368?pwd=m5HqJ98za3bp9qsGELSTZkCIlJMpEb.1 \nTo contribute to the collective gift: https://www.papayoux.com/fr/cagnotte/genevieve-s-future-outdoor-adventures\nhttps://indico.in2p3.fr/event/37768/
URL:https://www.lapth.cnrs.fr/en/event/genevieve-fest/
LOCATION:Auditorium / Grande Galérie (LAPTh Annecy)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260127T100000
DTEND;TZID=UTC:20260127T110000
DTSTAMP:20260411T060217
CREATED:20260122T090840Z
LAST-MODIFIED:20260127T102354Z
UID:15025-1769508000-1769511600@www.lapth.cnrs.fr
SUMMARY:Journal Club
DESCRIPTION:see https://sdrive.cnrs.fr/s/NJmNfMtzFBfCkQy\nhttps://indico.in2p3.fr/event/38460/
URL:https://www.lapth.cnrs.fr/en/event/journal-club/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260128T150000
DTEND;TZID=UTC:20260128T160000
DTSTAMP:20260411T060217
CREATED:20260108T113912Z
LAST-MODIFIED:20260128T155345Z
UID:14401-1769612400-1769616000@www.lapth.cnrs.fr
SUMMARY:Ivano Basile - Horror vacui: instabilities in scale-separated Casimir compactifications
DESCRIPTION:Speakers: Ivano Basile (Garching\, Max Planck Inst.)\n.\nAbstract: Finding reliable scale-separated vacua with no moduli in the string landscape is a considerable challenge\, yet it is essential to connect string theory to our universe. Among several attempts\, toroidal compactifications supported by fluxes and Casimir energy stand out for their simplicity and degree of parametric control. In particular\, there exist simple such compactifications of eleven-dimensional supergravity leading to non-supersymmetric weakly curved anti-de Sitter solutions in four dimensions. I will show that these solutions are perturbatively (and non-perturbatively) unstable\, and thus do not pertain to bona fide four-dimensional effective field theories.\nLink: Zoom\nAnLy: https://sites.google.com/view/anlystringsandfields\n \n \nhttps://indico.in2p3.fr/event/38238/
URL:https://www.lapth.cnrs.fr/en/event/ivano-basile-horror-vacui-instabilities-in-scale-separated-casimir-compactifications/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260129T130000
DTEND;TZID=UTC:20260129T153000
DTSTAMP:20260411T060217
CREATED:20260122T132329Z
LAST-MODIFIED:20260129T151059Z
UID:15059-1769691600-1769700600@www.lapth.cnrs.fr
SUMMARY:Physique fondamentale à partir de la structure à grande échelle de l'Univers à travers / Fundamental physics from large-scale structure across cosmic times)
DESCRIPTION:Speakers: Azadeh Moradinezhad (Laboratoire d’Annecy-le-Vieux de Physique Théorique (LAPTh))\nLe modèle /CDM décrit remarquablement bien l’Univers observé\, mais il ne rend pas compte de l’origine des structures ni de lanature du secteur sombre. La précision croissante des observations met en évidence des tensions pouvant signaler une nouvellephysique. Dans cet exposé\, je présenterai mes travaux et mon programme à venir pour exploiter les structures à grande échelle etrechercher de telles signatures à partir de deux observables complémentaires : le regroupement des galaxies et la cartographie enintensité de raies spectrales (LIM). L’essentiel de l’information encore sous-exploitée se situe (i) aux petites échelles non linéaires\, oùl’on peut réduire la variance d’échantillonnage en moyennant sur de nombreuses structures indépendantes\, à condition de modélisercorrectement les non-linéarités et les effets baryoniques\, et (ii) à grand décalage vers le rouge\, où les fluctuations restent plusproches des conditions initiales. Je présenterai des avancées pour extraire l’information non gaussienne du regroupement etmontrerai comment la LIM mm/sub-mm étend les analyses de LSS à haut redshift/décalage vers le rouge grâce à une atténuationrobuste des premiers plans et une modélisation précise du signal. Je conclurai en montrant comment la complémentarité desprincipales sondes de la LSS peut être exploitée dans des analyses multi-sondes cohérentes pour une cosmologie de précisionrobuste au-delà de la limite gaussienne.\nThe /CDM model has been remarkably successful in describing the observed Universe\, yet it does not explain the origin of structureor the nature of the dark sector. Growing observational precision is exposing tensions that may be early signs of new physics\,offering dues to these puzzles. ln this talk\, 1 will present my research over the last decade and outline my future program to exploitlarge-scale structure (LSS) to search for new-physics imprints using two complementary observables: galaxy clustering and lineintensitymapping (LIM). Much of the untapped information in LSS resides on small nonlinear scales\, where averaging over manyindependent features of the cosmic web can beat down sample variance if nonlinear and baryonic effects are modeled accurately\,and at high redshifts\, where fluctuations remain doser to the initial conditions. 1 will present advances in extracting non-Gaussianinformation from nonlinear clustering and show how mm/sub-mm LIM extends LSS analyses to the high-redshift Universe throughrobust foreground mitigation and accurate signal modeling. 1 will conclude by outlining how the complementarity of key LSS probescan be leveraged in coherent multi-probe analyses for robust precision cosmology beyond the Gaussian limit.\nhttps://indico.in2p3.fr/event/38478/
URL:https://www.lapth.cnrs.fr/en/event/azadeh-moradinezhad/
LOCATION:Auditorium (Annecy)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260130T100000
DTEND;TZID=UTC:20260130T110000
DTSTAMP:20260411T060217
CREATED:20251221T122329Z
LAST-MODIFIED:20260130T105332Z
UID:13662-1769767200-1769770800@www.lapth.cnrs.fr
SUMMARY:Simulations and modeling for precision cosmology
DESCRIPTION:Speakers: Zarija Lukic\nOngoing and upcoming cosmology surveys aim to address some of the deepest questions in fundamental physics—from the nature of dark energy and dark matter to tests of gravity and particle physics on the largest observable scales. Interpreting these data\, which probe multiple cosmic epochs and physical scales\, is a formidable challenge: it is fundamentally an inverse problem in which we infer the underlying physics from imperfect\, biased\, and noisy observations. In this talk I will describe our simulation and modeling program at Berkeley Lab’s Computational Cosmology Center to support inference using Lyman-α forest and intergalactic medium measurements. We have developed Nyx\, a highly efficient and scalable cosmological hydrodynamics code\, to generate high-fidelity realizations needed to connect theory to data\, such as DESI observations. However\, producing suites of full-physics simulations at the required accuracy remains computationally expensive\, motivating complementary approaches. I will discuss our work on emulators—surrogate models trained on finite ensembles of simulations—as well as new hybrid strategies that combine physical modeling with generative ML/AI approaches.\nhttps://indico.in2p3.fr/event/38053/
URL:https://www.lapth.cnrs.fr/en/event/tba/
LOCATION:Auditorium Vivargent (LAPTh)
END:VEVENT
END:VCALENDAR