BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Baryon Acoustic Oscillations from a Different Angle - George Efsta
 thiou (IoA/KICC)
DTSTART:20250522T103000Z
DTEND:20250522T110000Z
UID:TALK232162@talks.cam.ac.uk
CONTACT:Steven Brereton
DESCRIPTION:The Dark Energy Spectroscopic Instrument (DESI) has published 
 BAO measurements from one year of data (DR1) in 2024 and 3 years of data\n
 (DR2) in 2025. The DESI collaboration argue that their measurements sugges
 t that dark energy is evolving and that this evidence is stronger using th
 e DR2 data. This result would have major implications for fundamental phys
 ics if true. I will present a new way of looking at BAO data which shows t
 hat the DR2 data are more consistent with the Planck LCDM cosmology than t
 he DR1 data. The evidence for evolving dark energy from DESI BAO has there
 fore weakened as the data have improved. I will also discuss the impact of
  systematic errors if DESI BAO data are combined with Type Ia supernovae. 
 In summary\, I find very little evidence to suggest that dark energy is ev
 olving.\n
LOCATION:Hoyle Lecture Theatre\, Institute of Astronomy
END:VEVENT
END:VCALENDAR