Hacker News with Generative AI: Quantum Physics

One quantum transition makes light at 21 cm (bigthink.com)
Across the observable Universe, there are some 10^80 atoms, and most of them are simple hydrogen: made of just one proton and one electron each.

Quantum Physics, Astronomy, Hydrogen

253 points by Brajeshwar 2 days ago | 158 comments

Quantum Physics Is on the Wrong Track, Says Gerard 'T Hooft (scientificamerican.com)
After netting the world’s highest-paying science award, preeminent theoretical physicist Gerard ’t Hooft reflects on his legacy and the future of physics

Quantum Physics, Physics, Science, Theoretical Physics

9 points by gradus_ad 15 days ago | 1 comments

Quantum Physics Is on the Wrong Track Says Gerard 'T Hooft (scientificamerican.com)
After netting the world’s highest-paying science award, preeminent theoretical physicist Gerard ’t Hooft reflects on his legacy and the future of physics

Quantum Physics, Science, Physics, Theoretical Physics

16 points by indigoabstract 17 days ago | 0 comments

A superb explanation of quantum physics: principle of least action [video] (youtube.com)

Quantum Physics, Physics, Videos, Education

4 points by namaria 52 days ago | 3 comments

How Hans Bethe Stumbled Upon Perfect Quantum Theories (quantamagazine.org)
By 1928, quantum physicists seemed poised to unravel matter’s final secrets. The German researcher Walter Gordon had applied the emerging theory of quantum mechanics to the hydrogen atom, the universe’s simplest atom, and worked out exactly how it behaved. A mastery of all atoms seemed sure to follow.

Quantum Physics, Science, History, Physics

18 points by rbanffy 72 days ago | 1 comments

Hans Bethe Stumbled Upon Perfect Quantum Theories (quantamagazine.org)
Quantum calculations amount to sophisticated estimates. But in 1931, Hans Bethe intuited precisely how a chain of particles would behave — an insight that had far-reaching consequences.

Quantum Physics, Physics, History, Science

30 points by nsoonhui 72 days ago | 1 comments

Frequency shifts do not imply quantum entanglement (2022) (benbrubaker.com)
I’ve somehow become the go-to twitter critic (jointly with Douglas Natelson, a Rice University physics professor with an excellent blog) of a recent unpublished manuscript that has generated a lot of premature press coverage. The authors of this paper claim to have demonstrated quantum entanglement between a superconducting qubit — a special kind of electrical circuit that exhibits quantum behavior — and a remarkably hardy little creature called a tardigrade.

Quantum Physics, Science, Physics, Twitter

10 points by c1ccccc1 117 days ago | 0 comments

Scientists observe 'negative time' in quantum experiments (phys.org)
Scientists have long known that light can sometimes appear to exit a material before entering it—an effect dismissed as an illusion caused by how waves are distorted by matter.

Quantum Physics, Science, Time

16 points by pseudolus 124 days ago | 8 comments

Teaching quantum physics in schools: Experts encourage focus on 2 state systems (phys.org)
A team of physics educators from Italy, Hungary, Slovenia and Germany is focusing on a new approach to teaching quantum physics in schools.

Education, Quantum Physics, Physics, Science

21 points by westurner 149 days ago | 2 comments

Quantum scars make their mark in graphene (nature.com)
By patterning an ultrathin layered structure with tiny wells, physicists have created and imaged peculiar states known as quantum scars — revealing behaviour that could be used to boost the performance of electronic devices.

Quantum Physics, Materials Science, Graphene

8 points by thunderbong 149 days ago | 1 comments

Evidence of 'Negative Time' Found in Quantum Physics Experiment (scientificamerican.com)
Time can take on negative values in the quantum realm.

Quantum Physics, Physics, Time Travel

79 points by jonbaer 206 days ago | 22 comments

Evidence of 'Negative Time' Found in Quantum Physics Experiment (scientificamerican.com)
Time can take on negative values in the quantum realm.

Quantum Physics, Time, Science

18 points by zonovar 207 days ago | 2 comments

Physicists Reveal a Quantum Geometry That Exists Outside of Space and Time (quantamagazine.org)
A decade after the discovery of the “amplituhedron,” physicists have excavated more of the timeless geometry underlying the standard picture of how particles move.

Quantum Physics, Physics, Mathematics, Geometry

42 points by pseudolus 213 days ago | 12 comments

Quantum physics, general relativity, Riemannian geometry, Planck scale formalism (elsevier.com)

Quantum Physics, Physics, Mathematics, General Relativity

5 points by jonahbenton 232 days ago | 0 comments

Photon entanglement could explain the rapid brain signals behind consciousness (phys.org)

Quantum Physics, Neuroscience, Consciousness

31 points by wglb 252 days ago | 37 comments

Experiments Prepare to Test Whether Consciousness Arises from Quantum Weirdness (scientificamerican.com)

Quantum Physics, Consciousness, Science, Experiments

7 points by pseudolus 258 days ago | 2 comments

Quantum Physicists Found a New, Safer Way to Navigate (wired.com)