Organizers:

Miguel Montero, Instituto de Fisica Teorica
Julio Parra-Martinez, Institut des Hautes Études Scientifiques
Leonardo Rastelli, Stony Brook University
Irene Valenzuela, CERN

Over the last few years, a large body of evidence has accrued, both in  field theory and in quantum gravity, suggesting that very high-energy (UV) physics can have an unexpected impact at low energies. Causality and unitarity can bound the sign and size of low-energy EFT couplings;  consistency conditions can place strong bounds on Conformal Field Theory (CFT) data; exploration of the string theory landscape and a variety of gedanken experiments (the Swampland program) suggest the existence of universal consistency conditions that must be satisfied by the low-energy Effective Field Theory (EFT); and holography in its various forms shows that  quantum-mechanical models can be used to provide a UV-complete reconstruction of an emergent spacetime. A central physical question that all these approaches try to answer is what are the consistent low-energy modifications of Einstein gravity. A narrower question is whether string theory is the unique perturbative completion of Einstein gravity. The aim of this  ACP Summer program is to bring together researchers from different backgrounds who currently investigate UV implications at low energies in quantum field theory and gravity, emphasizing the complementarity and existing synergies between the different approaches.