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Feb 7, 2022
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Harry, I am afraid that your posts to this thread are only succeeding in telling most readers that there are other people working on other theories than the Big Bang and General Relativity, and that most of those theories involve quantum mechanics in some way. The links that you post include claims of success in mathematically explaining various observations, particularly in situations where BBT and GR "break down" mathematically. But, those papers are not (yet?) mainstream cosmological concepts, and they have their critics among knowledgeable experts.

So, as to what those conceptualized alternative physical principles really are, and how to think about them, it is presented in your links in language that most people are not familiar with. So I doubt that most readers here actually get very far into reading your links on this subject. In that sense, just posting links is just adding noise without message. At least some of the links do say something about addressing specific unresolved issues with BBT and GR, seeming to claim progress in understanding that allow readers to understand the claim, even if not the basis for it.

But, to actually get a conversation going here, it would help if you could provide an explanation, or a link to an explanation, of the basic concepts underpinning the theories in your links.

I personally do understand that theorists are trying to use the quantum coupling effects actually observed in Bose-Einstein condensates of extremely cold and low density gases in a lab to gain understanding of plausible quantum coupling in similar "condensates" of subatomic particles in extremely hot and high density in the cores of stars and even whatever is inside a black hole. And, I understand that from reading an postings and following a link here on Space.com. See https://science.nasa.gov/science-news/science-at-nasa/2002/03apr_neutronstars .

But, I do get lost in the specialized quantum mechanics jargon and specialized mathematical notations used in describing the chiral superfields that are so often spoken about to say how those theories work. As I currently understand it, quantum physicists have proposed up to 14 dimensions for space/time, with most of the ones other than the familiar x, y and z being limited to extremely tiny extents relevant only to quantum mechanical concepts. So, those are the "super" as opposed to the "sub" set of dimensions. And the fields for those particles in those dimensions are then the "superfields". In addition, I THINK that I understand that "chiral" super fields are ones that require another superfield to counteract it to maintain symmetry in the physical models.

But, how specific superfields act in specific dimensions on specific particles is not within my current understanding. I am not sure I even know which of your links deals with what number of dimensions in different theories.

So, to get this thread to succeed in meeting the intended purpose of this forum, can we please get some helpful tutoring?
 
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Catastrophe

"There never was a good war, or a bad peace."
I Googled Transients from Axion matter and got the following on page 1:

Probing relativistic axions from transient astrophysical sources
https://www.sciencedirect.com › science › article › pii


by J Eby · 2021 · Cited by 3 — We show that axion bursts from collapsing axion stars can be detectable over the wide range of axion masses 10 − 15 eV ≲ m ≲ 10 − 7 eV in laboratory ...

Probing Relativistic Axions from Transient Astrophysical Sources
https://arxiv.org › hep-ph


by J Eby · 2021 · Cited by 3 — Abstract: Emission of relativistic axions from transient sources, such as axion star explosions, can lead to observable signatures.
Missing: matter ‎| Must include: matter

Transient Radio Signatures from Neutron Star Encounters with ...
https://link.aps.org › doi › PhysRevLett.127.131103


by TDP Edwards · 2021 · Cited by 16 — The QCD axion is expected to form dense structures known as axion miniclusters if the Peccei-Quinn symmetry is broken after inflation.

Transient phenomena in the axion assisted Schwinger effect
https://cds.cern.ch › files › 2204.10842.pdf


by V Domcke · 2022 — In this paper we clarify some subtleties in the computation of transient effects in physical quantities for fermions in a homogeneous axion ...
34 pages
Probing Relativistic Axions from Transient Astrophysical Sources
https://paperswithcode.com › paper › probing-relativisti...


28 Jun 2021 — Axions constituting dark matter (DM) are often considered to form a non-relativistic oscillating field. We explore bursts of relativistic ...

Axion - Wikipedia
https://en.wikipedia.org › wiki › Axion


An axion is a hypothetical elementary particle postulated by the Peccei–Quinn theory in 1977 to resolve the strong CP problem in quantum chromodynamics ...

Neutrino and Axion Astronomy with Dark Matter Experiments
https://iopscience.iop.org › article › pdf


by V Takhistov · 2021 — This is well illustrated by exploration of relativistic axions from transient astrophysical sources. (e.g. axion star explosions), ...

Transient Radio Signatures from Neutron Star Encounters with ...
https://repo.scoap3.org › api › files › PhysRevLett...


by TDP Edwards · 2021 · Cited by 16 — and therefore offer a promising pathway to discovering QCD axion dark matter. DOI: 10.1103/PhysRevLett.127.131103. Introduction.

Probing relativistic axions from transient astrophysical sources
https://repo.scoap3.org › api › files › j.physletb.2...


by J Eby · 2022 · Cited by 3 — discuss both the simple case of a transient axion burst signal ... field fluctuations shortly before matter-radiation equality. Quanti-.
Transient Radio Signatures from Neutron Star Encounters with ...
https://www.researchgate.net › ... › Stars › Neutron Star


16 Dec 2021 — and therefore offer a promising pathway to discovering QCD axion dark matter. ... a compelling candidate for particle dark matter (DM) [5–8].



If you want us to research this area, please suggest which might be good to start with.
I have started with Wikipedia. I have started with this and the top hit:

"Axion
An axion (/ˈæksiɒn/) is a hypothetical elementary particle postulated by the Peccei–Quinn theory in 1977 to resolve the strong CP problem in quantum chromodynamics (QCD). If axions exist and have low mass within a specific range, they are of interest as a possible component of cold dark matter."

Probing relativistic axions from transient astrophysical sources
https://www.sciencedirect.com › science › article › pii

by J Eby · 2021 · Cited by 3 — We show that axion bursts from collapsing axion stars can be detectable over the wide range of axion masses 10 − 15 eV ≲ m ≲ 10 − 7 eV in laboratory ...
From the abstrct:
"The detection of axion bursts could provide new insights into the fundamental axion potential, which is challenging to probe otherwise. "


Cat :)
 
Last edited:
Apr 13, 2021
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[Submitted on 23 Oct 2021]
Astroparticle physics with compact objects

astro-ph>arXiv:2110.12298

To study compact objects one needs to look at the properties of various particles from Neutrinos, Photons, Axion Particles, partonic matter to Quark Matter to Neutron matter.
 
Apr 13, 2021
277
26
710
[Submitted on 9 Jun 2022]
Chiral condensate from a Hadron Resonance Gas model
Deeptak Biswas, Peter Petreczky, Sayantan Sharma
In this work we address the question about how well the chiral crossover transition can be understood in terms of a non-interacting hadron resonance gas model. Using the latest results on the variation of hadron masses as a function of the pion mass from lattice Quantum Chromodynamics, we study the temperature dependence of the renormalized chiral condensate and from this we estimate the chiral crossover temperature in 2+1 flavor QCD with physical quark masses to be Tc=161.2±1.7MeV. This estimate is only 2σ higher than the latest lattice QCD result. For the curvature of the pseudo-critical line we find κ2=0.0203(7) which is in very good agreement with continuum extrapolated lattice results..

Knowing this science allows us to understand the Dipolar properties large scale and may explain how expansion during nucleosynthesis and contraction on the reverse.
 

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