Solving Solar Neutrino Problem with Planck Scale Foams

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Discussion Overview

The discussion revolves around the "solar neutrino problem" and its potential resolution through concepts related to Planck scale foams and neutrino oscillations. Participants explore the implications of recent findings and theoretical models, including references to specific papers and ongoing research in neutrino physics.

Discussion Character

  • Debate/contested
  • Exploratory
  • Technical explanation

Main Points Raised

  • Some participants question whether the solar neutrino problem has been fully solved, referencing a 2004 paper linking it to Planck scale foams.
  • Others note that the Sudbury Neutrino Observatory confirmed neutrino oscillations, suggesting progress but not a definitive resolution.
  • One participant emphasizes that while there is strong evidence for neutrino oscillations, the solar neutrino problem remains unresolved.
  • Another participant argues that the issue has shifted from a solar neutrino problem to a broader neutrino problem, as solar models have been validated.
  • There is a discussion about the nature of neutrinos, including their mass and the implications of the Higgs mechanism and SUSY theories.
  • Questions arise regarding the specific mechanisms behind neutrino oscillations and the role of the Maki-Nakagawa-Sakata matrix.

Areas of Agreement / Disagreement

Participants express differing views on whether the solar neutrino problem is resolved, with some asserting that it has shifted focus while others maintain that significant questions remain. The discussion reflects multiple competing perspectives on the topic.

Contextual Notes

Participants reference ongoing research and theoretical models, indicating that the understanding of neutrino behavior is still evolving. There are unresolved questions regarding the mass of neutrinos and the mechanisms behind their oscillations.

wolram
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can anyone tell me if the, "solar neutrino problem", has been
solved, i ask because, i found a April 2004 paper that "solves"
the problem by linking to Planck scale foams aka LQG.
the thread is "quantum gravity Planck scales" in S and GR.

http://arxiv.org/abs/hep-ph/0404014
 
Last edited:
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I don't know if it fully solved the problem, but the Sudbury Neutrino Observatory (SNO) confirmed neutrino oscillations in the last couple of years.
 
There is very strong evidence these days that neutrinos oscillate. I wouldn't go so far as to say it's a closed case, however.

- Warren
 
There is still a lot of ongoing research into neutrino oscillations, the so called "neutrino factory". The solar neutrino problem is far from solved.
 
wolram said:
can anyone tell me if the, "solar neutrino problem", has been
solved, i ask because, i found a April 2004 paper that "solves"
the problem by linking to Planck scale foams aka LQG.
the thread is "quantum gravity Planck scales" in S and GR.

http://arxiv.org/abs/hep-ph/0404014

http://www.nature.com/nsu/030120/030120-4.html

http://www.nature.com/nsu/010621/010621-5.html

Zz.
 
thankyou all, i can see that the therory in the paper i pointed to
may be worthy of consideration.
 
If by 'solar neutrino problem' you mean 'why do the classic solar neutrino detectors find only ~65% of the neutrinos predicted from solar models?', then the problem has been solved, in the sense that the solar models have been found to be sound, and the 'deficit' of neutrinos laid at the door of neutrino oscillations. In this sense, it's no longer a 'solar' neutrino problem, rather a 'neutrino' problem.
 
Nereid said:
If by 'solar neutrino problem' you mean 'why do the classic solar neutrino detectors find only ~65% of the neutrinos predicted from solar models?', then the problem has been solved, in the sense that the solar models have been found to be sound, and the 'deficit' of neutrinos laid at the door of neutrino oscillations. In this sense, it's no longer a 'solar' neutrino problem, rather a 'neutrino' problem.
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i understand better now, the neutrino is a schizophrenic particle
that can change character every few hundred miles. but what
causes these changes?
 
Excellent question!

In one way, the answer is very simple: at least one flavour has non-zero mass. However, this just pushes the question back - why does it have non-zero mass (or, why don't the other flavours also have non-zero mass)? Also, what is that mass? And, will the Higgs help us understand neutrinos better? Do we need a SUSY theory??
 
  • #10
I once read an article of Baez that said that the key was in a matrix called the Maki-Nakagawa-Sakata matrix. I even remember that he described that matrix like "misterious"
 
  • #11
Why don't muon neutrinos oscillate with electron neutrinos?
 

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