Angular Momentum

The structure of optical rotatum follows a logarithmic spiral -- a signature that is commonly seen in the pattern formation of seashells and galaxies, according to a team of physicists from Harvard University.

Physicists at the Technion - Israel Institute of Technology say they have observed a new form of quantum entanglement in the total angular momentum of photons confined in nanoscale structures.

The real thing is even more confusing than the Netflix show.

Errors in quantum computers are an obstacle for their widespread use. But a team of scientists say that, by using an antimony atom and the Schrödinger's Cat thought experiment, they could have found a way to stop them.

The giant holes in galaxies' centers shouldn't be able to combine, yet combine they do. Scientists suggest that an unusual form of dark matter may be the solution.

Was Vincent van Gogh the original chaos theorist? While we admire the beauty of "The Starry Night," physicists decided to crash the party and analyze its swirling sky like a science experiment. It turns out van Gogh wasn't just painting stars and spirals; he was capturing the essence of turbulent flow. Who needs an advanced degree in fluid dynamics when you have a paintbrush and an eye for chaos?

The spectral degeneracies emerging as a consequence of parity-time (PT) symmetry exhibit a profound divergence from their conventional counterparts. They possess non-Hermitian nature and are designated as exceptional points (EPs), marking instances where the real and corresponding imaginary portions of specific eigenvalues align perfectly, alongside a coalescence of their associated eigenvectors.

Andromeda and the Milky Way may collide, or they may safely swing past each other. Time will tell

The rapid development of technologies such as the internet, mobile communications, and artificial intelligence has dramatically increased the demand for high-capacity communication systems. Among various solutions, mode-division multiplexing (MDM) has emerged as a crucial technique, utilizing spatial modes like orbital angular momentum (OAM) to enhance communication capacity.

The 'heartbeats' of rapidly spinning neutron stars are usually highly regular, but occasionally, the spin of these dead star pulsars 'glitches.' Now, a...

New research suggests that colliding neutron stars can briefly "trap" ghostly particles called neutrinos, which could reveal new secrets about some of space's most extreme events.

A study published in Opto-Electronic Science discusses high-intensity spatial-mode steerable frequency up-converter toward on-chip integration.

For some reason, when we talk about the age of stars, galaxies, and the Universe, we use "years" to measure time. Can we do better?

Some black holes are so massive they were likely created as smaller black holes that merged. Maybe we can use such black hole "children" to learn about the...

Rivka Galchen on the science behind black holes and what they can tell us about the universe.

The discovery could explain why, although supermassive black hole mergers are predicted theoretically, they have never been observed in progress.

Scientists have brought the stars 'down to Earth' by creating 5 new isotopes that could reveal how heavy elements like gold are created when neutron stars...

In diamonds (and other semiconducting materials), defects are a quantum sensor's best friend. That's because defects, essentially a jostled arrangement of atoms, sometimes contain electrons with an angular momentum, or spin, that can store and process information. This "spin degree of freedom" can be harnessed for a range of purposes, such as sensing magnetic fields or making a quantum network.

The physics of the gravitational form factors of the proton, as well as their understanding within quantum chromodynamics, has advanced significantly in the past two decades through both theory and experiment.

A dying binary star is ejecting material 250 times faster than an F-16 jet, plunging the temperature of this surrounding nebula close to absolute zero.