Back to today’s briefing

Story perspectives

New Quadratic Gravity Theory Links Quantum Mechanics and Big Bang

4/3/2026

44 9 Full Breakdown

Summary

Story summary

Physicists at the University of Waterloo and the Perimeter Institute propose a new theory called quadratic gravity to unify quantum mechanics and general relativity.
Their model links the Big Bang's rapid expansion to quantum gravity and offers a testable hypothesis.
The theory predicts a minimum level of gravitational waves during inflation, and future detectors like LISA and NASA's Nancy Grace Roman Telescope could observe them.

1 of 1

Story summary

Physicists at the University of Waterloo and the Perimeter Institute propose a new theory called quadratic gravity to unify quantum mechanics and general relativity.
Their model links the Big Bang's rapid expansion to quantum gravity and offers a testable hypothesis.
The theory predicts a minimum level of gravitational waves during inflation, and future detectors like LISA and NASA's Nancy Grace Roman Telescope could observe them.