Gravitational Axion Grand Unification of QCD With Gravity

by Tommy on 26/05/2017

The gravitational axion QCD unification magnus opus of Giorgi Dvali.

Topological Origin of Chiral Symmetry Breaking in QCD and in Gravity, Gia Dvali (17 May 2017)

We show that the assumption of non-zero topological susceptibility of the vacuum in a fermion-free version of a theory, such as gravity or QCD, suffices to conclude the following: Once N massless fermion flavors are added to the theory, they break the chiral flavor symmetry dynamically, down to a subgroup that would be anomaly-free under gauging; In both theories, the pseudo-Goldstone corresponding to axial U(1)-symmetry becomes massive; In QCD as well as in gravity the massless fermions are eliminated from the low energy spectrum of the theory. All the above conclusions are reached without making an assumption about confinement. Some key methods of our approach are: Reformulation of topological susceptibility in the language of a three-form gauge theory; Utilization of gravity in the role of a spectator interaction for the chiral anomaly-matching in QCD; Gauging chiral symmetries and matching their anomalies using the spectator Green-Schwarz type axions. Our observations suggest that breaking of chiral symmetries in QCD and in gravity can be described in unified topological language, and seemingly-disconnected phenomena, such as, the generation of eta’-meson mass in QCD and breaking of global chiral symmetry by gravity may share a secret analogy. The described phenomenon may shed a new light – via contribution of micro black holes into the gravitational topological susceptibility of the vacuum – on incompatibility between black holes and global symmetries. It appears that explicit breaking is not the sole possibility, and like QCD, gravity may break global symmetries dynamically. As an useful byproduct, matching of gravitational anomalies provides a selection tool for compositeness, eliminating possibility of massless composite fermions where standard gauge anomaly matching would allow for their existence.

And just in the nick of time too. String theory only lives on the inside of a black hole, apparently.

The microscopic quantum black holes are the fluctuating quantum spacetime topolopgy.


An awesome paper title, no?

See also:

Nambu-Goldstone Effective Theory of Information at Quantum Criticality, Gia Dvali, Andre Franca, Cesar Gomez, Nico Wintergerst, Phys. Rev. D 92, 125002 (1 December 2015), doi:10.1103/PhysRevD.92.125002

We establish a fundamental connection between quantum criticality of a many-body system, such as Bose-Einstein condensates, and its capacity of information-storage and processing. For deriving the effective theory of modes in the vicinity of the quantum critical point we develop a new method by mapping a Bose-Einstein condensate of N-particles onto a sigma model with a continuous global (pseudo)symmetry that mixes bosons of different momenta. The Bogolyubov modes of the condensate are mapped onto the Goldstone modes of the sigma model, which become gapless at the critical point. These gapless Goldstone modes are the quantum carriers of information and entropy. Analyzing their effective theory, we observe the information-processing properties strikingly similar to the ones predicted by the black hole portrait. The energy cost per qubit of information-storage vanishes in the large-N limit and the total information-storage capacity increases with N either exponentially or as a power law. The longevity of information-storage also increases with N, whereas the scrambling time in the over-critical regime is controlled by the Lyapunov exponent and scales logarithmically with N. This connection reveals that the origin of black hole information storage lies in the quantum criticality of the graviton Bose-gas, and that much simpler systems that can be manufactured in table-top experiments can exhibit very similar information-processing dynamics.

So it appears now that I have come full circle with this.

My axion adventure is now officially over.

18 months from start to finish.

Up Next: The Resistance.

Update 1: I pulled this paper off Scholar because I don’t peruse HEP on the ArXiv.

Sabine Hossenfelder just blogged this today, which led me to her Aeon article on this subject.

Black Hole Computing, Sabine Hossenfelder, Aeon (31 March 2016)

Update 2: It’s going to take me quite a while to work through this material now that I am officially interested in these subjects. To recapitulate my axion adventure now that it’s officially finally over (pending microwave gravitational cosmic QCD axion detection in new and yet to be constructed sensitive cascading microwave axion haloscopes), this all began for me in the late fall of 2015 when I was distracted from my work in condensed matter physics – by the gravitational axion.

You can review those blog posts if you are feeling especially masochistic. Basically I had this wrapped up by Christmas of 2015, but being busy with other things and with raging dark matter and dark energy wars and an acrimonious election cycle – I had other responsibilities. So this whole idea languished until the election debacle, and it wasn’t until I could definitively exclude most, if not all, of the alternatives that I was anxious enough to get something written up on the axion and to my surprise, quantum cosmology. The origin of life essay was just practice for this.

On the Nature of Bismuth (I) Iodide in the Solid State

Thomas Lee Elifritz, Spec. Sci. Tech. 17, 85 (1994)

The Quantum Initiative – Energy in the 21st Century (1 January 2015)

Quantum Astrophysics – Quantum Physics and Astrophysics (8 October 2015)

The Cosmic Evolution of Autobiogenesis (12 June 2016)

Gravitational Axions as Dark Matter (1 January 2017)

Gravitational Axions in Quantum Gravity and Cosmology (8 January 2017)

My current status is that I am extremely pleased with my five self published 2015-2017 essays, and indeed with my 1994 bismuth iodide paper, and so considering recent developments and papers on these subjects I can’t see the need to continue to write about or even cover this stuff.

So welcome to the future! It’s here now.

And that future now is past.

I’ll see you in the future.

In Stockholm Sweden.

And the Planet Mars.

Update 3: Another big distraction for six months was the CERN LHC 750 GeV resonance.

I never drank the koolaide, though, being unqualified and unworthy.

Then the rocket blew up on the launch pad.

And then there was Trump.

Lizard King

Lizard King

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