A geometric approach to fundamental physics

Knot Physics is a research program investigating whether matter, quantum mechanics, and gravity share a geometric origin. It models particles as topological defects in a branched four-dimensional spacetime, with physical behavior emerging from branch statistics and entropy.

3-Minute Introduction

Quantum interference in branched spacetime

In Knot Physics, particles are modeled as topological defects—informally called knots—within a four-dimensional spacetime whose branches separate and recombine. This three-minute introduction shows how knot amplitudes and branch recombination are proposed to give rise to the wave function and double-slit interference.

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Theory resources

Concise Guide

Theory overview

A concise guide to the framework’s assumptions, quantitative results, testable predictions, and unresolved questions.

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Finite Path Integrals on Stochastic Branched Structures

Roukaya Dekhil, Clifford Ellgen, & Bruno Klajn (Mar 2026)

Published in J. Phys. A: Math. Theor. (2026) • DOI: 10.1088/1751-8121/ae513a (opens in a new tab)

Abstract: In this paper, we present a statistical model of spacetime trajectories based on a finite collection of paths organized into a branched manifold. For each configuration of the branched manifold, we define a Shannon entropy. Given the variational nature of both the action in physics and the entropy in statistical mechanics, we explore the hypothesis that the classical action is proportional to this entropy. Under this assumption, we derive a Wick-rotated version of the path integral that remains finite and exhibits both quantum interference at the microscopic level and classical determinism at the macroscopic scale. In effect, this version of the path integral differs from the standard one because it assigns weights of non-uniform magnitude to different paths. The model suggests that wave function collapse can be interpreted as a consequence of entropy maximization. Although still idealized, this framework provides a possible route toward unifying quantum and classical descriptions within a common finite-entropy structure.

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Recent seminar

Particle Knots and Entropic Dynamics

Knot Physics recasts quantum field theory as geometry within a higher-dimensional branched spacetime, where knots correspond to elementary particles. The seminar explains how entropy-maximizing branch behavior may generate the forces and their gauge groups while connecting quantum and classical behavior.

Particle Knots and Entropic Dynamics seminar video thumbnail

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Cliff Ellgen

Cliff Ellgen

Research Director

Ordinal Research Institute

B.S. in Mathematics, Caltech

Ali Nayeri

Ali Nayeri

Researcher

Ordinal Research Institute

Ph.D. in Theoretical and Mathematical Physics, The Inter-University Centre for Astronomy and Astrophysics (IUCAA)

Garrett Biehle

Garrett Biehle

Researcher

Ordinal Research Institute

Ph.D. in Physics, Caltech

Bruno Klajn

Bruno Klajn

Researcher

University of Zagreb

Ph.D. in Physics, University of Zagreb

Bassem Sabra

Bassem Sabra

Researcher

Notre Dame University–Louaize

Ph.D. in Astrophysics, Ohio University

Sebastian Zając

Sebastian Zając

Researcher

SGH Warsaw School of Economics

Ph.D. in Theoretical and Mathematical Physics, University of Silesia in Katowice

Dominique Kang

Dominique Kang

Program Director

Ordinal Research Institute

B.S. in Economics, Arizona State University