2 ms·

https://en.wikipedia.org/wiki/False_vacuum_decay#Existential_threat https://en.wikipedia.org/wiki/False_vacuum_decay#Existential... I check the revised calcula

https://en.wikipedia.org/wiki/False_vacuum_decay#Existential_threat https://en.wikipedia.org/wiki/False_vacuum_decay#Existential... I check the revised calculations for the top quark and Higgs mass measurements every few years, as the accuracy increases it seems more and more that the universe metastable, though last I checked stable conditions were not eliminated.

FrontierPsych 4y ago
https://en.wikipedia.org/wiki/False_vacuum_decay#Bubble_propagation https://en.wikipedia.org/wiki/False_vacuum_decay#Bubble_prop... The vacuum can only expand at the speed of light. Only a portion of the universe would be destroyed. The universe would still be unaffected because galaxies located further than 4,200 megaparsecs (13 billion light-years) away from each other are moving away from each other faster than the speed of light while the vacuum decay cannot expand faster than the speed of light.
md2020 4y ago
Can you elaborate on why the increasing accuracy of these measurements indicates that the universe is metastable?
- molticrystal 4y ago
  As the measurements of the mass of the Higgs boson and top quark become more accurate, either through better data or better models and methods to interpret the data the ovals in the images [0] [1] shown in the margin of the article become narrower. So far that narrowness tends to reduce the ovals overlap with the green area indicating a stable universe. But it has not ruled out a stable universe afaik. For the most part continued measurements have increased the accuracy of the Higgs boson which is the horizontal aspect of the oval, but there have been improvements in the models and methods that have assisted in narrowing the top quark as wel. While there might be better sources now, when I was following it more often, the authors of this paper [2] were the best source of tracking at least the top quark as that seemed to be a special topic of research for them. [0] https://en.wikipedia.org/wiki/File:Higgs-Mass-MetaStability.svg https://en.wikipedia.org/wiki/File:Higgs-Mass-MetaStability.... [1] https://en.wikipedia.org/wiki/File:Higgs_FalseVacuum2018.jpg https://en.wikipedia.org/wiki/File:Higgs_FalseVacuum2018.jpg [2] https://arxiv.org/abs/1207.0980 https://arxiv.org/abs/1207.0980

FrontierPsych 4y ago

https://en.wikipedia.org/wiki/False_vacuum_decay#Bubble_propagation https://en.wikipedia.org/wiki/False_vacuum_decay#Bubble_prop... The vacuum can only expand at the speed of light. Only a portion of the universe would be destroyed. The universe would still be unaffected because galaxies located further than 4,200 megaparsecs (13 billion light-years) away from each other are moving away from each other faster than the speed of light while the vacuum decay cannot expand faster than the speed of light.

md2020 4y ago

Can you elaborate on why the increasing accuracy of these measurements indicates that the universe is metastable?

molticrystal 4y ago
As the measurements of the mass of the Higgs boson and top quark become more accurate, either through better data or better models and methods to interpret the data the ovals in the images [0] [1] shown in the margin of the article become narrower. So far that narrowness tends to reduce the ovals overlap with the green area indicating a stable universe. But it has not ruled out a stable universe afaik. For the most part continued measurements have increased the accuracy of the Higgs boson which is the horizontal aspect of the oval, but there have been improvements in the models and methods that have assisted in narrowing the top quark as wel. While there might be better sources now, when I was following it more often, the authors of this paper [2] were the best source of tracking at least the top quark as that seemed to be a special topic of research for them. [0] https://en.wikipedia.org/wiki/File:Higgs-Mass-MetaStability.svg https://en.wikipedia.org/wiki/File:Higgs-Mass-MetaStability.... [1] https://en.wikipedia.org/wiki/File:Higgs_FalseVacuum2018.jpg https://en.wikipedia.org/wiki/File:Higgs_FalseVacuum2018.jpg [2] https://arxiv.org/abs/1207.0980 https://arxiv.org/abs/1207.0980