Physics News and Discussions

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I got into this theory from the TV series Sliders and went from there, the only problem is that I now think like this now.

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Quantum crystal of frozen electrons—the Wigner crystal—is visualized for the first time
https://phys.org/news/2024-04-quantum-c ... igner.html
by Princeton University

Electrons—the infinitesimally small particles that are known to zip around atoms—continue to amaze scientists despite the more than a century that scientists have studied them. Now, physicists at Princeton University have pushed the boundaries of our understanding of these minute particles by visualizing, for the first time, direct evidence for what is known as the Wigner crystal—a strange kind of matter that is made entirely of electrons.

The finding, published in Nature, confirms a 90-year-old theory that electrons can assemble into a crystal-like formation of their own, without the need to coalesce around atoms. The research could help lead to the discovery of new quantum phases of matter when electrons behave collectively.

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Physicists discover a novel quantum state in an elemental solid
https://phys.org/news/2024-04-physicist ... solid.html
by Princeton University

Physicists have observed a novel quantum effect termed "hybrid topology" in a crystalline material. This finding opens up a new range of possibilities for the development of efficient materials and technologies for next-generation quantum science and engineering.

The finding, published in Nature, came when Princeton scientists discovered that an elemental solid crystal made of arsenic (As) atoms hosts a never-before-observed form of topological quantum behavior. They were able to explore and image this novel quantum state using a scanning tunneling microscope (STM) and photoemission spectroscopy, the latter a technique used to determine the relative energy of electrons in molecules and atoms.

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Evidence of a new subatomic particle observed
https://phys.org/news/2024-04-evidence- ... ticle.html
by Chinese Academy of Sciences

The BESIII collaboration have reported the observation of an anomalous line shape around ppbar mass threshold in the J/ψ→γ3(π+π-) decay, which indicates the existence of a ppbar bound state. The paper was published online in Physical Review Letters.

The proximity in mass to 2mp is suggestive of nucleon-antinucleon bound states, an idea that has a long history. Before the birth of Quark Model, a nucleon-antinucleon bound state was already proposed by Prof. E. Fermi and Prof. C. N. Yang.

There is an accumulation of evidence for anomalous behavior in the proton-antiproton system near the ppbar mass threshold, e.g., J/ψ→γppabr , J/ψ→γπ+π-η' and the proton's effective form factor determined from e+e-→ppbar, exhibiting a narrow peak or a very steep falloff around the ppbar mass threshold, which inspired many speculations and renewed the interests on the nucleon-antinucleon bound state.

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Combating disruptive 'noise' in quantum communication
https://phys.org/news/2024-04-combating ... ation.html
by Griffith University

In a significant milestone for quantum communication technology, an experiment has demonstrated how networks can be leveraged to combat disruptive 'noise' in quantum communications.

The international effort led by researchers from Griffith University's Center for Quantum Dynamics highlights the potential of quantum networks in revolutionizing communication technologies on a quantum level. The study, "Nonlocality activation in a photonic quantum network," has been published in Nature Communications.

Researchers Dr. Nora Tischler and Dr. Sergei Slussarenko, program managers at the ARC Center of Excellence for Quantum Computation and Communication Technology (CQC2T) node at Griffith University, believe their findings are a first step towards large-scale quantum networks, which may fundamentally change how we communicate on a global scale.