Jun 12, 2025 06:11 PM
Epic effort to ground physics in math opens up the secrets of time
https://www.quantamagazine.org/epic-effo...-20250611/
By mathematically proving how individual molecules create the complex motion of fluids, three mathematicians have illuminated why time can’t flow in reverse....
The Planck scale isn't the limit physicists think it is
https://iai.tv/articles/the-planck-scale..._auid=2020
INTRO: Science's current best theory of reality, low-energy quantum gravity, takes the form of an effective field theory – one that is only valid up until a certain limit. Physics takes it as gospel that this breakdown occurs at the Planck Scale, but as theoretical philosopher Caspar A. Jacobs argues this is a mistake. Many have assumed that not only the same methods that took us from general relativity to low-energy quantum gravity will also take us to a grander theory, but also that this grander theory will cut up reality in ultimate units of the Planck constant. Unfortunately, given that this breakdown and the Planck scale lie far outside of our range of observable energies, we cannot say where our theories fail to match an unknown reality... (MORE - details)
Laws of physics are still broken: Attempt to explain away black holes' central singularity falls short, scientist says
https://www.space.com/astronomy/laws-of-...ntist-says
EXCERPTS: [...A black hole...] remains somewhat concerning, because it represents a breakdown of the laws of physics. Thanks to their central singularity, black holes don't obey the laws of physics...
[...] In a study published in February, Hennigar and his colleagues used an effective theory that [...] replaces the central singularity with a highly warped static region located at the core of the black hole.
[...] Unfortunately, this recipe of gravity just isn't to the taste of many scientists, including Polish theoretical physicist Nikodem Poplawski of the University of New Haven, who told Space.com that he has three main issues with the team's theory.
[...] So does Poplawski think that humanity could ever discover what lies within a black hole and close the book on physics-breaking singularities for good? Yes, but with a caveat... (MORE - missing details)
https://www.quantamagazine.org/epic-effo...-20250611/
By mathematically proving how individual molecules create the complex motion of fluids, three mathematicians have illuminated why time can’t flow in reverse....
The Planck scale isn't the limit physicists think it is
https://iai.tv/articles/the-planck-scale..._auid=2020
INTRO: Science's current best theory of reality, low-energy quantum gravity, takes the form of an effective field theory – one that is only valid up until a certain limit. Physics takes it as gospel that this breakdown occurs at the Planck Scale, but as theoretical philosopher Caspar A. Jacobs argues this is a mistake. Many have assumed that not only the same methods that took us from general relativity to low-energy quantum gravity will also take us to a grander theory, but also that this grander theory will cut up reality in ultimate units of the Planck constant. Unfortunately, given that this breakdown and the Planck scale lie far outside of our range of observable energies, we cannot say where our theories fail to match an unknown reality... (MORE - details)
Laws of physics are still broken: Attempt to explain away black holes' central singularity falls short, scientist says
https://www.space.com/astronomy/laws-of-...ntist-says
EXCERPTS: [...A black hole...] remains somewhat concerning, because it represents a breakdown of the laws of physics. Thanks to their central singularity, black holes don't obey the laws of physics...
[...] In a study published in February, Hennigar and his colleagues used an effective theory that [...] replaces the central singularity with a highly warped static region located at the core of the black hole.
[...] Unfortunately, this recipe of gravity just isn't to the taste of many scientists, including Polish theoretical physicist Nikodem Poplawski of the University of New Haven, who told Space.com that he has three main issues with the team's theory.
[...] So does Poplawski think that humanity could ever discover what lies within a black hole and close the book on physics-breaking singularities for good? Yes, but with a caveat... (MORE - missing details)