Physics at the Planck scale and below

Determine the nature of physics at the Planck scale and below, providing a complete and consistent account of physical behavior at these scales.

Background

Early in the paper, the author emphasizes that strong claims about reductionism in QFT are limited by our incomplete knowledge of physics at the smallest scales, particularly around the Planck scale.

This acknowledged ignorance constrains definitive conclusions about fundamentality and motivates caution in assessing whether large-scale phenomena must supervene on small-scale physics in the QFT regime.

References

with so much still unknown about physics at the Planck scale and below, it would be premature to say anything too definitive on this point.

— Quantum Field Theory and the Limits of Reductionism  (2407.20457 - Adlam, 2024) in Introductory paragraphs (before Section 1. Terminological Notes)