The lack of understanding of why classical gravity

The gap

Evidence profile

Sourced from the future-work section and stated research gap and limitations section of the source papers, classified as general, spanning 3 journals. Those papers have been cited 1 times in total.

Supporting evidence — 6 representative gaps

• Simple String Theory: A Classical Unification of Gravity and Electromagnetism via Spin Wave Dynamics and Centripetal Acceleration (2026) · Zenodo (CERN European Organization for Nuclear Research) · doi

  Further development of the Simple String Theory to address the non-Abelian case. Experimental verification of the theory's predictions, such as the gravitomagnetic effect. Application of the theory to other areas of physics, such as cosmology or condensed matter physics.

  generalfuture-work sectionevidence 5/5
  Keywords: further development simple string theory address non-abelian case
• Two-body interaction in the Chebyshev network: emergence of Newton's law of gravitation from loop quantum gravity (2026) · Zenodo (CERN European Organization for Nuclear Research) · doi

  The emergence of classical general relativity and its Newtonian limit from the fundamental quantum geometry of spin networks is an open question in loop quantum gravity. There is a need to extend the 26-valent Chebyshev network model to a system of two point defects.

  generalstated research gapevidence 5/5
  Keywords: emergence classical general relativity newtonian limit fundamental quantum
• Curvature waves from loop quantum gravity intertwiners in 3D Chebyshev networks (2026) · Zenodo (CERN European Organization for Nuclear Research) · doi

  The paper identifies a gap in the understanding of the dynamics of emergent geometry in loop quantum gravity. The paper aims to fill this gap by solving the discrete wave equation generated by the effective LQG Hamiltonian and by demonstrating the isotropy of the long-wavelength limit.

  generalstated research gapevidence 5/5
  Keywords: paper identifies gap understanding dynamics emergent geometry loop
• Present Trends in Theoretical Physics : A Contemporary Perspective (2026) · International Journal of Theoretical & Computational Physics · doi

  The lack of direct experimental verification for Quantum Gravity. The lack of a comprehensive theory that unifies quantum mechanics and general relativity. The need for new approaches to theoretical physics, such as the use of computation and artificial intelligence.

  generalstated research gapevidence 5/5
  Keywords: lack direct experimental verification quantum gravity comprehensive theory
• Present Trends in Theoretical Physics : A Contemporary Perspective (2026) · International Journal of Theoretical & Computational Physics · doi

  The lack of direct experimental verification for Quantum Gravity is a challenge. The mathematical frameworks of string theory and loop quantum gravity are increasingly complex, resulting in issues around experimental verification. The paper does not provide a comprehensive solution to the challenges facing theoretical physicists.

  generallimitations sectionevidence 5/5
  Keywords: lack direct experimental verification quantum gravity challenge mathematical
• The simple reason why classical gravity can entangle (2026) · International Journal of Modern Physics D · cited 1× · doi

  The lack of understanding of why classical gravity can entangle despite theory-independent no-go theorems. The need for a theory-independent certification of the non-classical nature of gravity. The importance of studying low-energy quantum gravity effects.

  generalstated research gapevidence 5/5
  Keywords: lack understanding classical gravity entangle despite theory-independent no-go

Questions about this gap