I Is Gravi-GUT a candidate theory of everything?

[kodama]

TL;DR Summary

research into Gravi-GUT

this thread is to open up discussion on Gravi-GUT as theories of everything

GUT or Grand Unified Theories attempt to unify the 3 forces of weak E&M and strong force, and Gravi-GUT want to add gravity.

this peer reviewed paper in a journal on Gravi-GUT

Chirality in unified theories of gravity​

F. Nesti1 and R. Percacci2


Phys. Rev. D 81, 025010 – Published 14 January, 2010

published by

Physical Review D​

Abstract​

We show how to obtain a single chiral family of an 𝑆⁢𝑂⁡(10) grand unified theory (GUT), starting from a Majorana-Weyl representation of a unifying (GraviGUT) group 𝑆⁢𝑂⁡(3,11), which contains the gravitational Lorentz group 𝑆⁢𝑂⁡(3,1). An action is proposed, which reduces to the correct fermionic grand unified theory action in the broken phase.

this paper is cited by another more recent Gravi-GUT

[Submitted on 13 Oct 2025]

GraviGUT unification with revisited Pati-Salam model​

Stephon Alexander, Bruno Alexandre, Michael Fine, João Magueijo, Edžus Nākums
https://arxiv.org/abs/2510.11674

Pati--Salam models are of course peer reviewed research

these papers and research claims by using chiral sector, as SU(2) is chiral, they can avoid conflicting with the Coleman-Mandula theorem

specifically the gravitational sector is SU(2) Ashketar variables joined with the weak force which is also SU(2), and as a GUT it includes E&M and QCD

the most common criticism of Loop Quantum Gravity is that is a theory of gravity only and doesn't include the other forces and doesn't include standard model particles.

here, in the chiral formulation of gravi-GUT

quantizing the Ashketar variables gives rise to quantum gravity, and the GUT gives weak E&M and QCD. do Grand Unification theories also include a fermionic sector and 3 generations of fermions?

could perhaps octonions and the standard model also be included

 

[renormalize]

TL;DR Summary: research into Gravi-GUT

@kodama, I recommend taking a look at this paper from 2017:
K. Krasnov & R. Percacci, Gravity and Unification: A review (https://arxiv.org/abs/1712.03061v1)
From the abstract:
"We review various classical unified theories of gravity and other interactions that have appeared in the literature, paying special attention to scenarios in which spacetime remains four-dimensional, while an “internal” space is enlarged. ..."
The authors provide an extensive discussion of the pros and cons of various approaches to "Gravi-GUT" models, including how the Coleman-Mandula theorem might be circumvented. That said, the final paragraph of this paper is somewhat sobering: