QCD-gravity double-copy in the Regge regime: Shock wave propagators

H Raj, R Venugopalan - Physical Review D, 2024 - APS
In a previous paper [H. Raj and R. Venugopalan, Phys. Rev. D 109, 044064 (2024)
PRVDAQ 2470-0010 10.1103/PhysRevD. 109.044064], we demonstrated a double-copy …

A Systematic Lagrangian Formulation for Quantum and Classical Gravity at High Energies

IZ Rothstein, M Saavedra - arxiv preprint arxiv:2412.04428, 2024 - arxiv.org
We derive a systematic Lagrangian approach for quantum gravity in the super-Planckian
limit where $ s\gg M_ {pl}^ 2\gg t $. The action can be used to calculate to arbitrary accuracy …