What seems like bending the laws of physics is actually just using them to our advantage.
Category: quantum physics
Quantum Oscillators Find a Shared Beat
The synchronization of two quantum oscillators reveals a collective rhythm encoded solely in their correlations.
When clocks share a wall, heart cells pulse in a dish, or fireflies flash in a summer field, separate rhythms can somehow become one. Physicists call this phenomenon synchronization. It is familiar in the everyday world but becomes slippery in the quantum world, where an oscillator’s phase can be smeared out by environmental fluctuations and disturbed by measurements. Now, in a trapped-ion experiment, Jiarui Liu at the University of California, Berkeley, and his colleagues have observed synchronization between two quantum oscillators [1]. Their demonstration is important not just because it realizes a long-sought quantum version of a textbook nonlinear system, but also because the shared rhythm is hidden: Each oscillator alone shows no phase preference, and the beat emerges only when the two are measured together.
The classical picture of synchronization predates quantum mechanics. A key component is a self-sustained oscillator, a system that keeps repeating the same motion on its own. Such a system continually replaces the energy it loses through damping, while also preventing its motion from growing uncontrollably. Its amplitude is fixed, but its phase remains free, allowing an interaction with another oscillator to lock the two rhythms together.
Plutonium compound unlocks rare topological quantum behavior with potential nuclear science applications
Plutonium is one of the most complex elements in the periodic table. First synthesized and isolated in 1940 by scientists at the University of California, Berkeley, plutonium has been studied closely for more than eight decades. It’s most often associated with its role in nuclear security, but it’s also vital to nuclear power, where it is produced in reactors and can be recycled as fuel. Despite plutonium’s importance, some of its most fundamental behaviors remain a mystery.
Scientists at the Idaho National Laboratory (INL) have made an important discovery: A compound called plutonium hexaboride (PuB₆) exhibits a one-of-a-kind quantum property known as a topological Kondo insulating state. Published in Physical Review Research, this finding marks one of only a handful of times such behavior has been observed in a plutonium material—opening a new window for research into how some of nature’s most complex elements actually work.
New superconductors identified, unlocking process that could yield thousands more
An international team of quantum researchers has shown how machine learning can be used to filter a practically infinite number of possible material combinations to identify candidates for superconductivity. Thanks to the breakthrough, new superconductors can now be found much faster, says Aalto University Professor Päivi Törmä, who leads the SuperC consortium behind the research.
Superconductors carry electric current with zero resistance, thanks to a quantum effect appearing only at extremely low temperatures. They power not only quantum computers but many other things, from neuroimaging to fusion reactors and maglev trains.
However, these unicorn materials are prohibitively hard to identify. Any endlessly variable combination of elements could be a superconductor—yet few actually are. And the ones already discovered require expensive cooling equipment to bring them to the near-absolute-zero temperatures that give them their quantum properties.
Physicists Solve a “Quantum-Only” Problem Using an Ordinary Laptop
A problem once touted as requiring a quantum computer has now been solved on a laptop.
Using advanced mathematical techniques and sophisticated software, physicists at the Center for Computational Quantum Physics (CCQ) at the Simons Foundation’s Flatiron Institute and collaborators at Boston University showed that a conventional computer can successfully simulate a notoriously difficult quantum system previously claimed to be beyond the reach of classical computing.
Metric tensor part 2
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String theory and M theory part 1
Here I discuss two experiment and Gluon plasma, Gluon dipole. My lectures note is taken from professor Leonar Suskind string theory books and his lecture series. Professor Leonard Suskind books and his lecture grow my string theory knowledge. I have great respect🙏 to him. My main target to grow curiosity on science.
#stringtheory #quantumphysics #advancedphysics #astrophysics #m_theory.
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New Theory Explains How Time Began
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The biggest open problem in the foundations of physics is that Einstein’s theory of gravity, General Relativity, does not cooperate with quantum mechanics. Physicists have tried to solve this issue by coming up with a theory of quantum gravity, but those theories fall apart when you need them most – inside of black holes and at the Big Bang. Recently, though, physicists published a new calculation for the Big Bang, with a theory called quadratic gravity, which lets us skip over quantum gravity entirely, and that could explain the origin of time. Let’s take a look.
Paper: https://journals.aps.org/prl/abstract… mugs, posters and more: ➜ https://sabines-store.dashery.com/ 💌 Support me on Donorbox ➜ https://donorbox.org/swtg 👉 Transcript with links to references on Patreon ➜ / sabine 📝 Transcripts and written news on Substack ➜ https://sciencewtg.substack.com/ 📩 Free weekly science newsletter ➜ https://sabinehossenfelder.com/newsle… 👂 Audio only podcast ➜ https://open.spotify.com/show/0MkNfXl… 🔗 Join this channel to get access to perks ➜
/ @sabinehossenfelder 📚 Buy my book ➜ https://amzn.to/3HSAWJW #science #sciencenews #physics #gravity This video discusses a new explanation for the beginning of the universe, published in PRL, which addresses quantum gravity and the period before time began. It features a presenter discussing “Asymptotically Safe Gravity” and includes scientific graphics and charts related to cosmological research. This new idea elegantly addresses the origin of the universe and offers a fresh perspective on space time, making it a significant contribution to science news.
👕T-shirts, mugs, posters and more: ➜ https://sabines-store.dashery.com/
💌 Support me on Donorbox ➜ https://donorbox.org/swtg.
👉 Transcript with links to references on Patreon ➜ / sabine.
📝 Transcripts and written news on Substack ➜ https://sciencewtg.substack.com/
📩 Free weekly science newsletter ➜ https://sabinehossenfelder.com/newsle…
👂 Audio only podcast ➜ https://open.spotify.com/show/0MkNfXl…
🔗 Join this channel to get access to perks ➜
/ @sabinehossenfelder.
📚 Buy my book ➜ https://amzn.to/3HSAWJW
#science #sciencenews #physics #gravity.
This video discusses a new explanation for the beginning of the universe, published in PRL, which addresses quantum gravity and the period before time began. It features a presenter discussing \.