Menu

Blog

Page 5292

Jan 6, 2022

A New Theory for Systems That Defy Newton’s Third Law

Posted by in categories: energy, mathematics, physics, singularity, transportation

Many of these systems are kept out of equilibrium because individual constituents have their own power source — ATP for cells, gas for cars. But all these extra energy sources and mismatched reactions make for a complex dynamical system beyond the reach of statistical mechanics. How can we analyze phases in such ever-changing systems?

Vitelli and his colleagues see an answer in mathematical objects called exceptional points. Generally, an exceptional point in a system is a singularity, a spot where two or more characteristic properties become indistinguishable and mathematically collapse into one. At an exceptional point, the mathematical behavior of a system differs dramatically from its behavior at nearby points, and exceptional points often describe curious phenomena in systems — like lasers — in which energy is gained and lost continuously.

Now the team has found that these exceptional points also control phase transitions in nonreciprocal systems. Exceptional points aren’t new; physicists and mathematicians have studied them for decades in a variety of settings. But they’ve never been associated so generally with this type of phase transition. “That’s what no one has thought about before, using these in the context of nonequilibrium systems,” said the physicist Cynthia Reichhardt of Los Alamos National Laboratory in New Mexico. “So you can bring all the machinery that we already have about exceptional points to study these systems.”

Jan 6, 2022

Evading the uncertainty principle in quantum physics

Posted by in categories: particle physics, quantum physics

The uncertainty principle, first introduced by Werner Heisenberg in the late 1920’s, is a fundamental concept of quantum mechanics. In the quantum world, particles like the electrons that power all electrical product can also behave like waves. As a result, particles cannot have a well-defined position and momentum simultaneously. For instance, measuring the momentum of a particle leads to a disturbance of position, and therefore the position cannot be precisely defined.

Jan 6, 2022

OpenAI Plays Hide and Seek…and Breaks The Game! 🤖

Posted by in categories: open access, robotics/AI

❤️ Check out Weights & Biases here and sign up for a free demo: https://www.wandb.com/papers.
❤️ Their blog post is available here: https://www.wandb.com/articles/better-paths-through-idea-space.

📝 The paper “Emergent Tool Use from Multi-Agent Interaction” is available here:
https://openai.com/blog/emergent-tool-use/

Continue reading “OpenAI Plays Hide and Seek…and Breaks The Game! 🤖” »

Jan 6, 2022

Last Week in AI #149: AI enables brain interface for robot control, Deep Learning suffers from overinterpretation, and more!

Posted by in categories: information science, robotics/AI

AI algorithm interprets brain EEG signals to guide robot arms, deep learning’s overinterpretation problem and how ensembles can help.

Jan 6, 2022

Japan set to develop railguns to counter hypersonic missiles

Posted by in categories: existential risks, military

Defense Ministry expects to have a bolstered intercept system by late 2020s.


TOKYO — The Japanese Defense Ministry will develop a means to intercept hostile missiles using magnetically powered projectiles, sources told Nikkei Asia, as the nation scurries to respond to the hypersonic weapons being developed by China, North Korea and Russia.

Jan 6, 2022

China’s ‘Artificial Sun’ Just Broke a Major World Record For Plasma Fusion

Posted by in categories: nuclear energy, physics

Just seven months after it announced a milestone record for plasma fusion, the Chinese Academy of Sciences has absolutely smashed it.

Their ‘artificial Sun’ tokomak reactor is has maintained a roiling loop of plasma superheated to 120 million degrees Celsius (216 million degrees Fahrenheit) for a gobsmacking 1,056 seconds, the Institute of Plasma Physics reports.

This also beats the previous record for plasma confinement of 390 seconds, set by the Tore Supra tokamak in France in 2003.

Jan 6, 2022

New York State’s governor calls for 100% electric school buses by 2035

Posted by in categories: education, sustainability, transportation

But how electricity will be produced? So solar powered bus will be better option.


New York governor Kathy Hochul just proposed legislation to shift the whole state to 100% electric school buses by 2035.

Jan 6, 2022

Making quantum computers even more powerful

Posted by in categories: chemistry, computing, encryption, quantum physics

Three resonators operating at different frequencies read a 3×3 matrix of quantum dots. © 2022 EPFL

Biochemistry and cryptography.

Jan 6, 2022

Coming to a Mall Nearby? RoboCop Isn’t Just Fiction Anymore

Posted by in categories: finance, robotics/AI, security

Picture credit: Knightscope.

The following post was written and/or published as a collaboration between Benzinga’s in-house sponsored content team and a financial partner of Benzinga.

Robots patrolling around shopping malls, casinos and places of work actively looking for criminal activity might no longer be something straight out of a science fiction novel or movie. Knightscope, Inc., a Silicon Valley Based startup, is building and deploying fully autonomous security robots that deter, detect and report crime.

Jan 6, 2022

A Neural Network Solves, Grades & Generates University-Level Mathematics Problems

Posted by in categories: mathematics, robotics/AI

A research team from MIT, Columbia University, Harvard University and University of Waterloo proposes a neural network that can solve university-level mathematics problems via program synthesis.