Archive for the ‘physics’ category: Page 6

Jan 26, 2024

New method flips the script on topological physics

Posted by in categories: mathematics, physics

The branch of mathematics known as topology has become a cornerstone of modern physics thanks to the remarkable—and above all reliable—properties it can impart to a material or system. Unfortunately, identifying topological systems, or even designing new ones, is generally a tedious process that requires exactly matching the physical system to a mathematical model.

Researchers at the University of Amsterdam and the École Normale Supérieure of Lyon have demonstrated a model-free method for identifying topology, enabling the discovery of new topological materials using a purely experimental approach. The research is published in the journal Proceedings of the National Academy of Sciences.

Topology encompasses the properties of a system that cannot be changed by any “smooth deformation.” As you might be able to tell from this rather formal and abstract description, topology began its life as a branch of mathematics. However, over the last few decades physicists have demonstrated that the mathematics underlying topology can have very real consequences. Topological effects can be found in a wide range of physical systems, from individual electrons to large-scale .

Jan 23, 2024

2023 Moon to Mars Architecture Concept Review Outcomes Released by NASA

Posted by in categories: biological, physics, space travel

NASA’s Moon to Mars Architecture has been instrumental in developing, designing, and executing the long-term goals of establishing not only a permanent human presence on the Moon but sending humans to Mars, someday. Today, NASA announced the results from the recent 2023 Moon to Mars Architecture Concept Review, which outlines key objectives, strategies, and key decisions in establishing a human presence on Mars in the future.

The Concept Review discussed in detail the architecture objectives and segments for not only returning humans to the Moon but establishing a long-term presence there through testing new technologies, systems, and equipment that would be used on an eventual human mission to Mars. the Moon to Mars Objectives cover a myriad of goals, including lunar and planetary science, heliophysics, human and biological science, physics and physical sciences, science enabling, applied science, lunar infrastructure, Mars infrastructure, transportation and habitation, and operations.

“Over the last year we’ve been able to refine our process for Moon to Mars architecture concept development to unify the agency,” Nujoud Merancy, who is the Deputy Associate Administrator for Strategy & Architecture for NASA’s Exploration Systems Development Mission Directorate (ESDMD), said in a statement. “Our process in the coming months will focus on addressing gaps in the architecture and further reviewing the decisions the agency needs to make to successfully mount crewed Mars missions.”

Jan 23, 2024

An impossibly huge ring of galaxies might lead us to new physics. Here’s how

Posted by in categories: physics, space

The ring of galaxies, appropriately called the “Big Ring,” has a circumference of nearly 4 billion light-years.

Jan 23, 2024

Astrophysicists offer theoretical proof of traversable wormholes in the expanding universe

Posted by in categories: cosmology, evolution, information science, physics

The expansion of the universe at some stage of evolution is well described by the Friedmann model. It was derived from general relativity a hundred years ago, but it is still considered one of the most important and relevant cosmological models.

RUDN University astrophysicists have now proven the theoretical possibility of the existence of traversable wormholes in the Friedmann universe. The research is published in the journal Universe.

“A wormhole is a type of highly curved geometry. It resembles a tunnel either between distant regions of the same universe or between different universes. Such structures were first discussed in the framework of solutions to the gravitational field equations a hundred years ago. But the wormholes considered then turned out to be non-traversable even for photons—they could not move from one ‘end of the tunnel’ to the other, not to mention going back,” said Kirill Bronnikov, doctor of physical and , professor of RUDN University.

Jan 22, 2024

Black Holes All the Way Down: New Multimessenger Evidence for a Binary Black Hole Merger Within an Active Galactic Nucleus

Posted by in categories: cosmology, physics

In today’s paper, a unique gravitational wave event is re-examined as the possible origin of an AGN flare. What are the odds?

Jan 19, 2024

Pattern recognition in the nucleation kinetics of non-equilibrium self-assembly

Posted by in categories: physics, robotics/AI

Can the intrinsic physics of multicomponent systems show neural network like #Computation? A new study shows how molecules draw on the rules of #physics to perform computations similar to neural networks:

Examination of nucleation during self-assembly of multicomponent structures illustrates how ubiquitous molecular phenomena inherently classify high-dimensional patterns of concentrations in a manner similar to neural network computation.

Jan 19, 2024

Ultimate Computing: Biomolecular Consciousness and NanoTechnology

Posted by in categories: biological, chemistry, computing, engineering, mathematics, nanotechnology, neuroscience, physics

The possibility of direct interfacing between biological and technological information devices could result in a merger of mind and machine — Ultimate Computing. This book, a thorough consideration of this idea, involves a number of disciplines, including biochemistry, cognitive science, computer science, engineering, mathematics, microbiology, molecular biology, pharmacology, philosophy, physics, physiology, and psychology.

Jan 19, 2024

Astrophysicists explore links between atmospheric oxygen and detecting extraterrestrial technology on distant planets

Posted by in categories: alien life, physics

In the quest to understand the potential for life beyond Earth, researchers are widening their search to encompass not only biological markers, but also technological ones. While astrobiologists have long recognized the importance of oxygen for life as we know it, oxygen could also be a key to unlocking advanced technology on a planetary scale.

In a new perspective published in Nature Astronomy, Adam Frank, the Helen F. and Fred H. Gowen Professor of Physics and Astronomy at the University of Rochester and the author of The Little Book of Aliens (Harper, 2023), and Amedeo Balbi, an associate professor of astronomy and astrophysics at the University of Roma Tor Vergata, Italy, outline the links between and the potential rise of advanced technology on distant .

“We are ready to find signatures of life on alien worlds,” Frank says. “But how do the conditions on a planet tell us about the possibilities for intelligent, technology-producing life?”

Jan 18, 2024

We’ve Been Misreading a Major Law of Physics For The Last 300 Years

Posted by in categories: mathematics, physics

When Isaac Newton inscribed onto parchment his now-famed laws of motion in 1,687, he could have only hoped we’d be discussing them three centuries later.

Writing in Latin, Newton outlined three universal principles describing how the motion of objects is governed in our Universe, which have been translated, transcribed, discussed and debated at length.

But according to a philosopher of language and mathematics, we might have been interpreting Newton’s precise wording of his first law of motion slightly wrong all along.

Jan 18, 2024

Neural Connectivity: A Universal Network Phenomenon

Posted by in categories: biological, neuroscience, physics

Summary: A groundbreaking study by physicists and neuroscientists reveals that the connectivity among neurons stems from universal networking principles, not just biological specifics.

Analyzing various model organisms, researchers found a consistent “heavy-tailed” distribution of neural connections, guided by Hebbian dynamics, indicating that neuron connectivity relies on general network organization.

This discovery, transcending biology, potentially applies to non-biological networks like social interactions, offering insights into the fundamental nature of networking.

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