Einstein-maxwell-scalar EFT Predicts Gravitational Waves From Reheating, Potentially Testing Effects Below The Planck Mass

Einstein-maxwell-scalar EFT Predicts Gravitational Waves From Reheating, Potentially Testing Effects Below The Planck Mass

Scientists establish a lower limit of approximately 10^9 GeV for the energy scale at which gravity behaves normally, by analysing the production of gravitational waves during the period immediately after the Big Bang and applying principles of unitarity and causality to theoretical models of inflation.