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SUMMARY:UNDARK 2026: Illuminating Cosmic Discord
DTSTART:20260907T070000Z
DTEND:20260911T180000Z
DTSTAMP:20261015T014200Z
UID:indico-event-1616316@indico.cern.ch
CONTACT:THworkshops.secretariat@cern.ch
DESCRIPTION:Speakers: Vivian Poulin (LUPM\, CNRS & U. de Montpellier\, Fra
 nce)\, Ricardo Genova Santos\, Laura Herold\, Matteo Braglia\, Matthew Jos
 eph Lewandowski (CERN)\, Valerie Domcke (CERN)\, Miguel Escudero Abenza (C
 ERN)\, Andrea Caputo (CERN)\n\nModern cosmology is at a crossroads.  The 
 standard LCDM model\, while incredibly successful\, faces a series of pers
 istent challenges and "tensions" between key datasets.  The most prominen
 t one is on today’s expansion rate (H_0 tension) but others have emerged
  on the late redshift expansion potentially calling for a time dependent d
 ark energy.  These tensions may suggest either new physics or unresolved 
 systematic errors.  This places us at a crossroads\, where the lack of a 
 robust concordance model challenges our ability to interpret precision cos
 mology\, key to address some open questions in particle physics.\nSimultan
 eously\, we are in an era of unprecedented data flow.  Initial results fr
 om DESI\, mature analyses from ACT and KiDS\, and paradigm-challenging dis
 coveries from JWST (such as the "Little Red Dots") provide a complex\, and
  potentially contradictory\, picture of the cosmos.\nThis workshop is moti
 vated by the urgent need to move beyond single-tension discussions. We mus
 t synthesize these new\, multi-probe datasets and theoretical ideas into a
  consistent global picture. The workshop will bring together experts in th
 eory\, observation\, and computation to evaluate where concordance remains
  robust\, where it breaks down\, and how the next generation of surveys an
 d theoretical tools can close the gap.\nThere is no registration fee for t
 his workshop\, and a remote connection will be possible.Invited speakers a
 nd panelists:Gagandeep Anand (Space Telescope Science Institute) Camille B
 onvin (University of Geneva)Ruth Durrer (University of Geneva)Patricia Die
 go-Palazuelos (Max Planck Institute for Astrophysics) Georges Efstathiou 
 (University of Cambridge\, Institute of Astronomy) Willem Elbers (Durham U
 niversity) Mathias Garny (Technical University of Munich) Cara Giovanetti 
 (LBNL\, Berkeley)Carlos Hernández Monteagudo (Instituto de Astrofísica d
 e Canarias)Martin Kunz (University of Geneva)Francisco-Shu Kitaura (Instit
 uto de Astrofísica de Canarias) Julien Lesgourgues (RWTH Aachen Universit
 y) Meng-Xiang Lin (Simon Fraser University)Jamie McCullough (Princeton Uni
 versity) Azadeh Moradinezhad Dizgah (CNRS\, LAPTh Annecy) Rohan Naidu (MI
 T)Alice Pisani (Aix-Marseille Universite\, CNRS/IN2P3\, CPPM)Cyril Pitrou 
 (Institut d'Astrophysique de Paris\, IAP)Anna Maria Porredon (CIEMAT) Mick
 aël Rigault (IP2I Lyon\, CNRS / Université Claude Bernard Lyon 1) José 
 Alberto Rubiño Martín (Instituto de Astrofísica de Canarias) Alessio Sp
 urio Mancini (Royal Holloway\, University of London) Subir Sarkar (Univers
 ity of Oxford)Nils Schöneberg (LMU Munich)Matthieu Tristram (IJClab Unive
 rsité Paris-Saclay)Licia Verde (ICREA / Institute of Cosmos Sciences\, Un
 iversity of Barcelona) Francisco Villaescusa-Navarro (Simons Foundation)Za
 chary J. Weiner (Perimeter Institute)Organisers:Matteo BragliaAndrea Caput
 oValerie DomckeMiguel EscuderoRicardo Genova SantosLaura HeroldMatthew Jos
 eph LewandowksiVivian Pouilin\n \nThis TH Institute is supported by UNDAR
 K and is funded through the Widening participation and spreading excellenc
 e programme (project number 101159929).\n\n \n\n\nhttps://indico.cern.ch/
 event/1616316/\n\nZoom: https://cern.zoom.us/j/69107892166?pwd=MHQBXbcQhkl
 KjYaaP1PIFpurbbCZhd.1
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/1616316/
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