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Tuesday, 10 March 2026

The Information-Geometry Bridge of the Theory of Entropicity (ToE): From Fisher-Rao Classical Metric, Fubini-Study Quantum Metric, Tsallis and Renyi Generalized Entropies, Amari-Čencov alpha-Connections, to Levi-Civita Affine Connections and Riemannian Geometry of Physical Spacetime

The Information-Geometry Bridge of the Theory of Entropicity (ToE): From Fisher-Rao Classical Metric, Fubini-Study Quantum Metric, Tsallis and Renyi Generalized Entropies, Amari-Čencov alpha-Connections, to Levi-Civita Affine Connections and Riemannian Geometry of Physical Spacetime 


The "Information-Geometry Bridge" is an emerging theoretical framework that attempts to unify physical spacetime geometry with statistical information flow. This approach leverages information geometry—the differential geometry of probability distributions—to model physical space, motion, and gravity as emergent phenomena arising from entropy gradients and the reconfiguration/redistribution of information [entropy]. 

Key works and concepts linking these fields include:

1. The Theory of Entropicity (ToE)
This framework, primarily developed by John Onimisi Obidi (referenced as "ToE"), explicitly utilizes the tools requested to redefine physical reality. 

  • Core Principle: Entropy is elevated from a statistical byproduct to a fundamental, dynamic field (S(x
    )) whose gradients generate spacetime geometry, gravity, time dilation, and motion.
  • Mathematical Tools: It combines the Fisher-Rao metric (quantifying classical statistical distinguishability) and the Fubini-Study metric (quantifying quantum distinguishability) to create a hybrid metric-affine space [HMAS].
  • Amari–Čencov alpha 
    -connections:
     ToE uses these connections, which are crucial in information geometry for managing dualistic (mixture and exponential) structures, to describe the "curving" of information flow into spacetime paths.
  • Obidi Action: The theory defines an action principle—the Obidi Action—which generates a Master Entropic Equation (MEE) — otherwise known as the Obidi Field Equations (OFE), replacing Einstein’s field equations (EFE) with an equation where information-geometric curvature equals physical spacetime curvature.
  • Key Results: The theory derives relativistic effects (time dilation, length contraction, mass increase) as consequences of entropic resistance and the maximum rate of information transfer (IT), c — which is incidentally equivalent to the speed of light in Einstein's Theory of Relativity (ToR). 

2. Foundational Mathematical Frameworks
Several works in mathematical physics have laid the groundwork for this, connecting information metrics directly to geometric structures: 
  • Amari-Cencov Theorem & 
    -connections:
     This theorem establishes that the Fisher-Rao metric and the 
    -connections are uniquely invariant under sufficient statistics. Modern research has shown that the 
    -connections, 
    , are the Levi-Civita connections of specifically defined Riemannian metrics on the space of density functions.
  • -Fisher-Rao Metrics:
     Researchers have generalized the Fisher-Rao metric (
    ) to 
    -Fisher-Rao metrics, which connect directly to 
    -connections for 
    . These metrics are used to study geodesic equations that represent optimal paths of information flow.
  • G-dual Teleparallel Pairs: Ciaglia et al. developed a framework using Jordan algebras to combine Fisher-Rao and Fubini-Study metrics in both classical and quantum contexts, providing a unified description of statistical manifolds. 

3. Key Concepts in the Bridge of ToE
  • Information as Geometry: The "temperature of geometry" refers to the concept that rapid informational change corresponds to a "hotter," more dynamic spacetime.
  • No-Rush Theorem: A principle enforcing a lower bound on causal intervals, acting as a bridge between information-theoretic limits and physical spacetime structure.
  • Renyi-Tsallis alpha-q Parameters: These non-extensive entropy measures are used in ToE to connect the 
    -connections with the deformation of spacetime, specifically using the relationship between  q and a.
     
This field is still developing vigorously and often appears in various academic repositories (e.g., in TechRxiv or ResearchGate) aimed at reconciling general relativity with quantum mechanics via informational frameworks.

Would you like more details on the specific mathematical derivation of the "Master Entropic Equation (MEE)" of the Theory of Entropicity (ToE)?



Appendix: Extra Matter I


Works that utilize the Amari–Čencov framework (utilizing 
-connections and dualistic structure) alongside Fisher-Rao (classical) and Fubini-Study (quantum) information metrics to link information flow with physical spacetime geometry often fall under the umbrella of emerging "entropic gravity" or "information-geometry unification" theories.
The most direct, contemporary formulation linking these specific concepts—Amari-Čencov, Fisher-Rao/Fubini-Study, and physical spacetime—is the Theory of Entropicity (ToE), developed recently in 2025–2026.
Key Works and Frameworks
  • Theory of Entropicity (ToE) (John Onimisi Obidi, 2025–2026):
    • Core Idea: Entropy is not a byproduct but the fundamental, dynamic field (
      ) whose gradients generate gravitation, time, and motion.
    • The Bridge: It utilizes the Amari–Čencov 
      -connections to link information flow irreversibility with physical spacetime geometry.
    • Metrics Used: The theory integrates the Fisher-Rao metric (classical distinguishability) with the Fubini-Study metric (quantum distinguishability) to form a unified informational metric that governs spacetime curvature.
    • Key Results: It proposes that gravitational curvature is an manifestation of informational curvature (the "Obidi Action"). The Lorentz factor (gamma
      ) is re-derived as a subset of an "entropic Lorentz factor" (gamma
      ).
    • Mechanism: The constitutive relation 
       links non-extensive entropy deformation (
      q) to affine asymmetry, forming the geometric bridge.
  • Information Geometry of Space-Time (Ariel Caticha, 2019/2020):
    • Core Idea: Uses the maximum entropy method to model physical space as a "blurred" statistical manifold.
    • The Bridge: A "blurred" space is automatically endowed with a Fisher-Rao metric.
    • Spacetime Connection: The geometry of any embedded spacelike surface is given by its information geometry. The geometrodynamics of this space, under deformation in time, reproduces Einstein’s vacuum equations.
    • Limitations: It notes that since informational metrics are positive-definite (Riemannian), extending this to Lorentzian spacetime requires extra ingredients to handle the light-cone structure.
  • Geometric Quantum Mechanics & Information Geometry (Ciaglia et al.):
    • Core Idea: Focuses on the Fubini-Study metric on the projective Hilbert space and its relationship to the Quantum Fisher Information metric.
    • The Bridge: Develops the "G-dual teleparallel pair" to bridge classical information geometry (Fisher-Rao) and quantum geometry (Fubini-Study), showing how these metrics describe the evolution of quantum states.
  • Riemannian Viewpoint on Amari-Cencov (2025):
    • Core Idea: Provides a new geometric interpretation of the Amari-Cencov 
      -connections (
      ) by showing they are the Levi-Civita connections of specifically defined Riemannian metrics, 
      , which they term "
      -Fisher-Rao metrics".
    • Significance: This bridges the gap between the purely affine structures of early information geometry and metric-based gravity.
Core Concepts in the "Bridge"
  1. Information Flow (Amari-Čencov): The 
    -connections enable the study of curved spaces of probability distributions (statistical manifolds) and how information changes along a manifold (flow).
  2. Fisher-Rao Metric: Quantifies distinguishability between classical probability distributions.
  3. Fubini-Study Metric: Quantifies distinguishability between quantum states.
  4. Physical Spacetime Geometry: The Levi-Civita connection of a Riemannian metric that represents gravitational potential, often derived as an entropic force (Verlinde/Jacobson/ToE).
These works collectively suggest that the geometry of spacetime (Einstein's metric 
) is not a fundamental entity, but an effective, coarse-grained representation of the underlying information-geometric manifold.
Would you like a more detailed breakdown of the "Theory of Entropicity" field equations (the Obidi Field Equations— OFE), or a comparison between the Fisher-Rao and Fubini-Study contributions to this bridge of the Theory of Entropicity (ToE)?


Appendix: Extra Matter II


Several major works and theoretical frameworks use information geometry—specifically the Amari–Čencov framework and Fisher–Rao/Fubini–Study metrics—to build a "bridge" to the geometry of physical spacetime. [1, 2]

1. The Theory of Entropicity (ToE)

This framework specifically integrates the Fisher-Rao and Fubini-Study metrics via the Amari-Čencov $\alpha$-connection formalism to derive physical phenomena. [3, 4]
  • Mechanism: It treats entropy as a fundamental field whose gradients generate motion and gravitation.
  • Linking Information to Spacetime: The traditional Lorentz factor is reformulated as an "entropic Lorentz factor" governed by the informational geometry of the dual $\alpha$-connections.
  • Physical Dilation: Mass increase, time dilation, and length contraction are presented as consequences of entropy conservation within this geometric structure. [4, 5, 6]

2. Ariel Caticha’s "Information Geometry of Space-Time"

Caticha uses the method of maximum entropy to model physical space as a curved statistical manifold. [7]

3. Geometry-Information Duality (Neukart et al.)

This research proposes that time arises as a local informational field rather than a universal coordinate. [10, 11]
  • Information Flow: Temporal direction is identified with gradients in stored information, linking curvature and entropy.
  • Geometric Emergence: In regions where informational gradients vary slowly, the emergent geometry reduces to the Lorentzian structure of General Relativity. [10, 11]

4. Geometric Information Flows (Sergiu Vacaru)

Vacaru develops nonholonomic W-entropy functionals to describe the evolution of relativistic mechanical systems. [12, 13]

Key Mathematical Components in These Bridges

  • Fisher-Rao Metric: Acts as the primary Riemannian metric on the space of probability distributions, often mapped to the spatial metric of physical space.
  • Fubini-Study Metric: Bridges the quantum state space to the Fisher information metric, often used to account for "quantum complexity" in the evolution of spacetime states.
  • Amari-Čencov $\alpha$-connections: Provide the dualistic structure necessary to explain irreversible field behavior and energy-minimizing paths in an informational manifold. [1, 2, 15, 16, 17, 18, 19, 20]
If you'd like, I can provide a more detailed breakdown of the field equations or the derivation of the Lorentz factor within the Theory of Entropicity.

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