Counting AdS Vacua

by Prof. Alessandro Tomasiello (Milan Bicocca University)

Tuesday 28 Apr 2026, 14:00 → 16:00 Europe/Zurich

4/2-037 - TH meeting room (CERN)

How many AdS vacua exist below a certain cutoff μ? Taking a bird's eye view over all string theory vacua, we find that most classes display a power-law growth as μ tends to zero. The exception comes from constructions that admit many many brane charge choices, which naively leads to an exponential growth. Taking into account moduli and tachyons leads however to a natural weight by the volume of field theory space, which damps the exponentials to power laws again. Vacua with small numbers of light fields dominate in this measure.