Events List

DateEvent TypeSpeaker
11/01/2018Physics Dept ColloquiumHoward Stone [ + ]
11/02/2018NYU-CCA LSS Group MtgNYU-CCA LSS Group Mtg [ + ]
11/02/2018ISCISC [ + ]
11/05/2018CCPP Brown BagJohann Brehmer [ + ]
11/05/2018Informal Astro TalkSeunghwan Lim [ + ]
11/05/2018Blanton Tinker Pullen Blanton Tinker Pullen [ + ]
11/06/2018Modjaz Group MtgModjaz Group Mtg [ + ]
11/06/2018Astroparticle Group MeetAstro Particle Group Mtg [ + ]
11/06/2018Astro SeminarApurva Oza [ + ]
11/07/2018Informal Astro TalkPaz Beniamini [ + ]
11/07/2018HEP SeminarIra Rothstein [ + ]
11/07/2018Astro PhAstro Ph [ + ]
11/08/2018Physics Dept ColloquiumBob Austin [ + ]
11/09/2018ISCISC [ + ]
11/12/2018CCPP Brown BagNO CCPP BROWN BAG TODAY [ + ]
11/12/2018Blanton Tinker Pullen Blanton Tinker Pullen [ + ]
11/12/2018OtherJoshua Ruderman [ + ]
11/13/2018Modjaz Group MtgModjaz Group Mtg [ + ]
11/13/2018Astro SeminarTristan Smith [ -- ]

Title: Early dark energy can resolve the Hubble tension
Description: Early dark energy (EDE) that behaves like a cosmological constant at early times (redshifts > 3000) and then decays away like radiation or faster at later times can solve the Hubble tension. In these models, the sound horizon at decoupling is reduced resulting in a larger value of the Hubble parameter H0 inferred from the cosmic microwave background (CMB). We consider two physical models for this EDE, one involving an oscillating scalar field and another a slowly-rolling field. We perform a detailed calculation of the evolution of perturbations in these models. A Markov Chain Monte Carlo search of the parameter space for the EDE parameters, in conjunction with the standard cosmological parameters, identifies regions in which H0 inferred from Planck CMB data agrees with the SH0ES local measurement. In these cosmologies, current baryon acoustic oscillation and supernova data are described as successfully as in LCDM, while the fit to Planck data is slightly improved. (2:00 PM - 3:15 PM, 726 Broadway, 940, CCPP Seminar)
11/13/2018Special SeminarMark Hertzberg [ + ]
11/14/2018Astroparticle Group MeetAstro Particle Group Mtg [ + ]
11/14/2018HEP SeminarArvin Shahbazi-Moghaddam [ + ]
11/14/2018Astro PhAstro Ph [ + ]
11/15/2018Physics Dept ColloquiumShmuel Rubinstein [ + ]
11/16/2018Informal HEP TalkHongwan Liu [ + ]
11/16/2018NYU-CCA NYU-CCA [ + ]
11/16/2018Big Apple ColloquiumAmina Helmi [ + ]
11/16/2018ISCISC [ + ]
11/19/2018CCPP Brown BagMatt Kleban [ + ]
11/19/2018Blanton Tinker Pullen Blanton Tinker Pullen [ + ]
11/20/2018Modjaz Group MtgModjaz Group Mtg [ + ]
11/21/2018HEP Seminar [ + ]
11/27/2018Modjaz Group MtgModjaz Group Mtg [ + ]
11/27/2018Astro SeminarJo Dunkley [ + ]
11/28/2018Astroparticle Group MeetAstro Particle Group Mtg [ + ]
11/28/2018HEP SeminarMikhail Shaposhnikov [ + ]
11/28/2018Astro PhAstro Ph [ + ]
11/29/2018Physics Dept ColloquiumScott Tremaine [ + ]
11/30/2018NYU-CCANYU-CCA [ + ]
11/30/2018Special ColloquiumAndrea Maccio [ + ]
11/30/2018ISCISC [ + ]