De Sitter Cores from Nonlocal Quantum Field Theories

Nonlocal quantum field theories achieve perturbative ultraviolet finiteness by inserting gauge- and diffeomorphism-covariant entire-function regulators into all kinetic terms. These operators can be viewed as nonlocal smearing maps acting on sources in the Einstein equations. In this paper I show that, when the same entire-function regulator responsible for UV-finite loops is applied to the energy-momentum tensor of a point mass, the resulting static, spherically symmetric solution develops a regular de~Sitter core in place of a curvature singularity.

Source: arXiv:2607.13061v1 - http://arxiv.org/abs/2607.13061v1 PDF: https://arxiv.org/pdf/2607.13061v1 Original Link: http://arxiv.org/abs/2607.13061v1