Child universes UV regularization?

TL;DR

The paper proposes that child universe production, triggered by high energy UV excitations, could serve as a natural mechanism for UV regularization in quantum field theories with gravity, impacting black hole physics and early universe models.

Contribution

It introduces the idea that child universe formation can act as a UV regulator, linking quantum field divergences to gravitational effects and cosmological phenomena.

Findings

Child universe production can remove UV divergences in quantum field theories.

This mechanism may explain the absence of trans-Planckian primordial perturbations.

Connections are made to minimum length and maximal curvature hypotheses.

Abstract

It is argued that high energy density excitations, responsible for UV divergences in quantum field theories, including quantum gravity, are likely to be the source of child universes which carry them out of the original space time. This decoupling prevents these high UV excitations from having any influence on physical amplitudes. Child universe production could therefore be responsible for UV regularization in quantum field theories which takes into account gravitational effects. Also child universe production in the last stages of black hole evaporation, the prediction of absence of tranplanckian primordial perturbations, connection to the minimum length hypothesis and in particular connection to the maximal curvature hypothesis are discussed.