Room 522, 5/F, Chong Yuet Ming Physics Building, The University of Hong Kong
July 27, 2026 (Monday)
2:30 pm – 3:30 pm
Standard Cosmology is suffering renewed “tension” disfavouring both Cold Dark Matter as heavy particles and Dark Energy as a fixed cosmological constant. Instead, evidence is emerging of a unifying “Axiverse”, where a spectrum of light axions from String Compactification evolves Dark Energy into Dark Matter via discrete steps, to generate Wave Dark Matter and desirable large scale
evolution. I will outline our simulations and predictions for this fruitful new path applied to forefront imaging with the JWST and Euclid satellites.
Prof. Tom Broadhurst obtained his PhD in the UK, using the AngloAustralian Telescope to define the first redshift survey for measuring galaxy evolution. As junior faculty in Berkeley, he studied dark matter using gravitational lensing by galaxy clusters, with Hubble Space Telescope images and spectroscopy from the Hawaiian Keck telescopes. Since 2014 he has been pioneering a de-Broglie Wave interpretation of Dark Matter, with his group at the University of the Basque Country, using the latest JWST and Euclid satellite images, to test the distinctive predictions of this now leading dark matter interpretation. He received the NASA excellent achievement medal for his role in constructing the Advanced Camera on the Hubble Space Telescope and has supervised many PhD and masters students over the past 25 years.
Anyone interested is welcome to attend in person or via Zoom:
https://hku.zoom.us/j/96472971072?pwd=uoTCtn45823IaLEyIkyrQvvZPjyt0C.1
Meeting ID: 964 7297 1072 Password: 410133