Archive for the ‘particle physics’ category: Page 14

Jun 5, 2024

Scientists Think Spacetime May Have Come From Magic

Posted by in categories: particle physics, quantum physics

There is quanta of space time just as there is for particles and fields created by entanglement or liebnitz was right and spacetime are relational entities.

Scientists believe that spacetime may have emerged, in part, from a quantum property called “magic.”

Jun 5, 2024

Sensing Magnetic Fields with an Array of Single Atoms

Posted by in categories: particle physics, quantum physics

Using an atomic array originally designed for quantum memory, researchers have demonstrated a magnetometer with unprecedented spatial resolution.

Jun 5, 2024

Google’s Quantum AI Challenges Long-Standing Physics Theories

Posted by in categories: information science, particle physics, quantum physics, robotics/AI

Quantum simulators are now addressing complex physics problems, such as the dynamics of 1D quantum magnets and their potential similarities to classical phenomena like snow accumulation. Recent research confirms some aspects of this theory, but also highlights challenges in fully validating the KPZ universality class in quantum systems. Credit: Google LLC

Quantum simulators are advancing quickly and can now tackle issues previously confined to theoretical physics and numerical simulation. Researchers at Google Quantum AI and their collaborators demonstrated this new potential by exploring dynamics in one-dimensional quantum magnets, specifically focusing on chains of spin-1/2 particles.

Continue reading “Google’s Quantum AI Challenges Long-Standing Physics Theories” »

Jun 4, 2024

Scientists develop ‘X-ray vision’ technique to see inside crystals

Posted by in category: particle physics

A team of New York University researchers has created a new way to visualize crystals by peering inside their structures, akin to having X-ray vision. Their new technique—which they aptly named “Crystal Clear”—combines the use of transparent particles and microscopes with lasers that allow scientists to see each unit that makes up the crystal and to create dynamic three-dimensional models.

Jun 3, 2024

Chemists uncover reversible assembly of platinum nanocatalyst

Posted by in categories: nanotechnology, particle physics

Chemists at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory, Stony Brook University (SBU), and their collaborators have uncovered new details of the reversible assembly and disassembly of a platinum catalyst. The new understanding may offer clues to the catalyst’s stability and recyclability.

The work, described in a paper published in the journal Nanoscale (“Unravelling the origin of reaction-driven aggregation and fragmentation of atomically dispersed Pt catalyst on ceria support”), reveals how single platinum atoms on a cerium oxide support aggregate under reaction conditions to form active catalytic nanoparticles — and then, surprisingly, fragment once the reaction is stopped.

Fragmentation may sound shattering, but the scientists say it could be a plus.

Jun 3, 2024

Teleportation of Quantum Particles and Impact

Posted by in categories: particle physics, quantum physics

Explore the fascinating world of quantum teleportation. Discover its principles, applications, and the profound impact it could have on our future.

Introduction to Quantum Teleportation

Quantum teleportation, a term that sounds like it’s straight out of science fiction, is a very real and advancing field in quantum physics. This groundbreaking technology is not about transporting matter from one place to another but rather involves the transfer of information between quantum particles. This article delves into the science behind quantum teleportation, its potential applications, and the impact it could have on various aspects of our lives.

Jun 3, 2024

Physicists take molecules to a new ultracold limit, creating a state of matter where quantum mechanics reigns

Posted by in categories: particle physics, quantum physics

There’s a hot new BEC in town that has nothing to do with bacon, egg, and cheese. You won’t find it at your local bodega, but in the coldest place in New York: the lab of Columbia physicist Sebastian Will, whose experimental group specializes in pushing atoms and molecules to temperatures just fractions of a degree above absolute zero.

Jun 3, 2024

New precision measurement program advances understanding of proton halos

Posted by in category: particle physics

In May 2022, the Facility for Rare Isotope Beams (FRIB) at Michigan State University (MSU), launched its precision measurement program. Staff from FRIB’s Low Energy Beam and Ion Trap (LEBIT) facility take high-energy, rare-isotope beams generated at FRIB and cool them to a lower energy state. Afterward, the researchers measure specific particles’ masses at high precision.

Jun 2, 2024

Mussel-Inspired Technique Paves Way for Efficient Nanoparticle Assembly

Posted by in categories: chemistry, nanotechnology, particle physics

Nanoscale materials offer remarkable chemical and physical properties that transform theoretical applications, like single-molecule sensing and minimally invasive photothermal therapy, into practical realities.

The unparalleled features of nanoparticles make them promising for various research and industrial uses. However, effectively using these materials is challenging due to the absence of a rapid and consistent method to transfer a uniform monolayer of nanoparticles, a crucial step in device manufacturing.

One potential solution to this challenge lies in electrostatic assembly processes, where oppositely charged nanoparticles adhere to a surface, forming a monolayer that repels other similarly charged particles from attaching further. While effective, this process is often slow. Nature provides an innovative model to address this limitation through underwater adhesion strategies, which have evolved to circumvent similar problems.

Jun 1, 2024

On-chip GHz time crystals with semiconductor photonic devices pave way to new physics and optoelectronic applications

Posted by in categories: computing, particle physics, quantum physics

Since Nobel-Prize-winning physicist Frank Wilczek first proposed his theory over a decade ago, researchers have been on the search for elusive “time crystals”—many-body systems composed of particles and quasiparticles like excitons, photons, and polaritons that, in their most stable quantum state, vary periodically in time.

Wilczek’s theory centered around a puzzling question: Can the most stable state of a quantum system of many particles be periodic in time? That is, can it display temporal oscillations characterized by a beating with a well-defined rhythm?

It was quite rapidly shown that time crystal behavior cannot occur in isolated systems (systems which do not exchange energy with the surrounding environment). But far from closing the subject, this disturbing question motivated scientists to search for the conditions under which an open system (i.e., one that exchanges energy with the environment) may develop such time crystal behavior.

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