AbotGR23 > plenary speakers
Cliff Burgess

Cliff Burgess

McMaster University / PI, Canada

Talk title: Gravitational Surprises at Low Energies: Why are Primordial Metric Fluctuations Classical?

This talk explores some low-energy surprises that can emerge as consequences of accidental approximate symmetries in the gravity sector that are arguably robust consequences of UV physics (like string theory). Among the surprises are things usually believed to be uncommon in particle physics: naturally light scalars and vacuum energies, together with new screening mechanisms that help these to evade constraints from solar-system tests of gravity.

Time: July 5, Tuesday, 21:30-22:30 (CST, UTC+8)