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Nov 9, 2024

Scientists calculate predictions for meson measurements

Posted by in categories: particle physics, supercomputing

Nuclear physics theorists at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory have demonstrated that complex calculations run on supercomputers can accurately predict the distribution of electric charges in mesons, particles made of a quark and an antiquark. Scientists are keen to learn more about mesons—and the whole class of particles made of quarks, collectively known as hadrons—in high-energy experiments at the future Electron-Ion Collider (EIC), a particle collider being built at Brookhaven Lab.

Nov 9, 2024

Controlling skyrmions at room-temperature in 2D topological spin structure technology

Posted by in categories: quantum physics, robotics/AI

The Korea Research Institute of Standards and Science (KRISS) has, for the first time in the world, generated and controlled skyrmions at room temperature in two-dimensional (2D) materials. This achievement reduces power consumption compared to traditional three-dimensional (3D) systems while maximizing quantum effects, making it a core technology for the development of room-temperature quantum computers and AI semiconductors.

Nov 9, 2024

Scientists use high-energy heavy ion collisions as a new tool to reveal subtleties of nuclear structure

Posted by in category: nuclear energy

“In low-energy experiments, it’s like taking a long-exposure picture,” said Chun Shen, a theorist at Wayne State University whose calculations were used in the new analysis.

Because the exposure time is long, the low-energy methods do not capture all the subtle variations in the arrangement of protons that can occur inside a nucleus at very fast timescales. And because most of these methods use electromagnetic interactions, they can’t directly “see” the uncharged neutrons in the nucleus.

“You only get an average of the whole system,” said Dean Lee, a low-energy theorist at the Facility for Rare Isotope Beams, a DOE Office of Science user facility at Michigan State University. Though Lee and Shen are not co-authors on the study, they and other theorists have contributed to developing this new nuclear imaging method.

Nov 9, 2024

Kagome superconductor breaks the rules at record-breaking temperatures

Posted by in categories: materials, quantum physics

Using muon spin rotation at the Swiss Muon Source SmS, researchers at the Paul Scherrer Institute (PSI) have discovered that a quantum phenomenon known as time-reversal symmetry breaking occurs at the surface of the Kagome superconductor RbV3Sb5 at temperatures as high as 175 K. This sets a new record for the temperature at which time-reversal symmetry breaking is observed among Kagome systems.

Nov 9, 2024

Evolutionary anthropologist presents hypothesis about why humans are dominating the world over other animals

Posted by in category: futurism

Why is human culture—the shared body of knowledge passed down across generations—so much more powerful than animal cultures?

Nov 9, 2024

Innovative transistor for reconfigurable fuzzy logic hardware shows promise for enhanced edge computing

Posted by in categories: computing, innovation

Edge computing devices, devices located in proximity to the source of data instead of in large data centers, could perform computations locally. This could reduce latency, particularly in real-time applications, as it would minimize the need to transfer data from the cloud.

Nov 9, 2024

Fluids thicken at the speed of light: A new theory extends Einstein’s relativity to real fluids

Posted by in category: futurism

The theory of special relativity is rife with counterintuitive and surprising effects, the most famous of which are length contraction and time dilation. If an object travels at a relative speed, which is a non-negligible fraction of the speed of light, with respect to an observer, the length of the object in the travel direction will appear shorter to the observer than it actually is in the object’s rest frame.

Nov 9, 2024

Can unknown physics be seen in interactions between Higgs bosons?

Posted by in category: particle physics

Since the launch of the Large Hadron Collider, there has been ongoing research there into Higgs bosons and a search for traces of physics beyond the existing model of elementary particles. Scientists working at the ATLAS detector have combined both goals: with the latest analysis it has been possible to expand our knowledge of the interactions of Higgs bosons with each other, and stronger constraints on the phenomena of “new physics” have been found.

Nov 9, 2024

Can the noble metals become superconductors?

Posted by in category: materials

Superconductivity is the phenomenon by which, at sufficiently low temperatures, electric current can flow in a metal with no resistance. While certain metals are excellent superconductors, other metals cannot superconduct at all.

Nov 9, 2024

Advances in plate tectonics research provide a new view of deep Earth’s carbon emissions

Posted by in category: climatology

From time to time, when Earth’s tectonic plates shift, the planet emits a long, slow belch of carbon dioxide. In a new modeling study published in Geochemistry, Geophysics, Geosystems, R. Dietmar Müller and colleagues show how this gas released from deep Earth may have affected the climate over the past billion years.

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