Poincaré Breaking and Gauge Invariance: A Road to Emergent Gravity and New Particles

Abstract

In this talk, we discuss how gauge symmetries broken explicitly by a Poincare-breaking UV cutoff can be restored. We show that gauge symmetries can be restored by the introduction of affine curvature in reminiscence to the Higgs field. In fact, gauge symmetries get restored and general relativity emerges at the extremum of the metric-affine action. As per this point, we show emergence of the general relativity, reveal how its parameters relate to the flat spacetime loops, elucidate the new particle spectrum it brings along, and discuss its salient signatures. We show that the resulting field-theoretic plus gravitational setup can be probed via various phenomena ranging from collider experiments to black holes.

Inflation in symmergent metric-Palatini gravity

“…Symmergent gravity is a new type of emergent gravity theory which prioritizes restoring the broken gauge symmetries [6][7][8][31][32][33]. In this manner, it differs from other emergent gravity theories, such as Sakharov's setup.…”