Tensions in the LCDM paradigm

Europe/Berlin
02.430 (Mainz Institute for Theoretical Physics, Johannes Gutenberg University)

02.430

Mainz Institute for Theoretical Physics, Johannes Gutenberg University

Staudingerweg 9 / 2nd floor, 55128 Mainz
Description
The establishment of the Lambda Cold Dark Matter paradigm in Cosmology has brought together physics on very diverse scales, with a mesmerizing variety of observational techniques and a unique theoretical effort. The consistency of this paradigm is today hindered by some tensions, either of internal consistency between datasets of different nature, or of seeming friction between theoretical predictions and observations. Observational and theoretical efforts are currently under way, in order to both understand the possible sources of systematics affecting the data, and to explain these frictions on theoretical grounds. This workshop aims at bringing together the communities involved in this effort, building a bridge between observers and data analysists, theorists, and simulators, in order to address the following fundamental questions about the tensions in the CDM paradigm: Is the current tension in the determination of Hubble constant by different probes due to new physics, or to systematics? What are the real sources of the inconsistencies between theoretical predictions and observations at the smallest galactic scales? Is it a problem that we are seeing no new physics at LHC? The ideal, two-fold, goal of the topical workshop is that of understanding whether tensions appearing on several scales are only episodical and disconnected from each other – and to which extent they are due to experimental systematics – or if they represent real cracks in the building of the ΛCDM. In the latter case, it remains to be assessed whether they are structural, thus hinting toward a major revision of our vision of the cosmological Universe, or they can be cured with minor modifications at different scales, separately.
Executive Summary (PDF)
Participants (PDF)
    • 09:00 09:30
      Introduction 30m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
    • 09:30 10:10
      Planck results on cosmology 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Karim Benabed
      Slides
    • 10:10 10:50
      Late Universe Measurement of the Hubble Constant and Evidence of Tension with Early Universe 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Adam Riess
    • 10:50 11:10
      Coffee 20m
    • 11:10 11:50
      Fitting LCDM to SPT-SZ and SPTpol Data 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Kimmy Wu
      Slides
    • 11:50 12:30
      Discussion 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
    • 12:30 14:30
      Lunch 2h
    • 14:30 15:10
      Hydrodynamical simulations of galaxy formation: can baryonic physics affect the dark matter distribution? 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Cecilia Scannapieco
      Slides
    • 15:10 15:50
      Reconciling LCDM with the low mass satellites of the Milky Way and M31 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Azadeh Fattahi
      Slides
    • 15:50 16:10
      Coffee 20m
    • 16:10 16:50
      Satellite galaxies in the Auriga simulations: a challenge to LambdaCMD? 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Christine Simpson
      Slides
    • 16:50 17:30
      Discussion 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
    • 09:30 10:10
      Local Group mysteries revealed by dwarf satellite galaxies 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Marius Cautun
      Slides
    • 10:10 10:50
      Co-rotating planes of dwarf galaxy satellites challenging Cold Dark Matter cosmology 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Oliver Muller
      Slides
    • 10:50 11:10
      Coffee 20m
    • 11:10 11:50
      The tight coupling between baryons and dark matter in galaxies: a challenge for LCDM? 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Federico Lelli
      Slides
    • 11:50 12:30
      Discussion 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
    • 12:30 14:15
      Lunch 1h 45m
    • 14:15 14:55
      New cosmological results with Type Ia Supernovae 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Dan Scolnic
    • 14:55 15:35
      The next generation of ground based CMB experiments 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Thibaut Louis
    • 15:35 15:55
      Coffee 20m
    • 15:55 16:35
      ΛCDM tensions and the CMB: Past, Present, and Future 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Chuck Bennet
    • 16:35 17:30
      Discussion 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
    • 09:30 10:10
      Constraining cosmological parameters with BAO and RSD from BOSS & eBOSS galaxy clustering datasets 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Hector Gil-Marin
      Slides
    • 10:10 10:50
      The expansion of the Universe before dark energy: high-redshift measurements using the Lyman alpha forest 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Andreu Font-Ribera
      Slides
    • 10:50 11:10
      Coffee 20m
    • 11:10 11:50
      Elucidating ΛCDM: Impact of Baryon Acoustic Oscillation Measurements on the Hubble Constant Discrepancy 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Graeme Addison
      Slides
    • 11:50 12:30
      H0liCOW, precision H0 determination from strong lensing 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Tom Collett
      Slides
    • 12:30 14:30
      Lunch 2h
    • 14:30 15:10
      Dark matter structure via 21-cm 'observations' of simulated galaxies 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Kyle Oman
      Slides
    • 15:10 15:40
      Determination of the DM density profile of the MW (and how much to trust it) 30m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Ekaterina Karukes
      Slides
    • 15:40 16:10
      Testing Modified Gravity Theories with the Milky Way 30m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Maria Benito
      Slides
    • 16:10 16:40
      Probing LCDM on small scales with the convergence power spectrum in strong lenses 30m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Ana Diaz Rivero
      Slides
    • 16:40 17:20
      Discussion 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
    • 09:30 10:10
      Constraints on non-standard dark matter scenarios from measurements of the galaxy luminosity function at high-redshifts 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Pier Stefano Corasaniti
      Slides
    • 10:10 10:50
      The dark hearts of dwarves and globular clusters - Predictions for dark matter content in low mass objects 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Peter Creasey
      Slides
    • 10:50 11:10
      Coffee 20m
    • 11:10 11:50
      Simulating Self-Interacting Dark Matter 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Mark Vogelsberger
      Slides
    • 11:50 12:30
      Discussion 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
    • 12:30 14:30
      Lunch 2h
    • 14:30 15:10
      Disentangling Inflation, Reionization, and Cosmic Acceleration with the CMB 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Vivian Miranda
      Slides
    • 15:10 15:50
      Improved cosmological constraints from KiDS+VIKING 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Hendrik Hildebrandt
      Slides
    • 15:50 16:10
      Coffee 20m
    • 16:10 16:50
      DES Cosmology: results, and tensions with other experiments 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Elisabeth Krause
    • 16:50 17:30
      Discussion 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
    • 09:30 10:10
      Dark Energy as Viewed by the Dark Energy Survey 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Eduardo Rozo
      Slides
    • 10:10 10:50
      Constraints on cosmological parameters from galaxy clusters: tSZ cluster counts and power spectrum combined with CMB 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Laura Salvati
      Slides
    • 10:50 11:10
      Coffee 20m
    • 11:10 11:50
      Prospects of LSST and WFIRST to constrain physics beyond LCDM 40m 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
      Speaker: Tim Eifler
    • 11:50 12:30
      Discussion 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
    • 12:30 14:00
      Lunch 1h 30m
    • 14:00 16:00
      Discussion and Wrap-Up 02.430

      02.430

      Mainz Institute for Theoretical Physics, Johannes Gutenberg University

      Staudingerweg 9 / 2nd floor, 55128 Mainz
    • 15:10 15:30
      Coffee 20m
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