Physics News

Pauli Exclusion: Physicists Directly Observe Key Principle of Quantum Mechanics

The Pauli exclusion principle predicts a forbidden zone along a meridian of the spherical halo of scattered particles, which the experiments indeed unveiled. The dark band in the graphic shows a rule derived from the principle in action. This rule is that indistinguishable fermions cannot scatter out at 90 degrees to the collision axis. Image credit: Niels Kjærgaard.
Jul 11, 2016 by Enrico de Lazaro

An international team of scientists, led by Dr. Niels Kjærgaard from the University of Otago in Dunedin, New Zealand, has used steerable ‘optical tweezers’ to split ultracold clouds of potassium-40 (40K) atoms and smash them together to directly observe a key principle of quantum mechanics – the Pauli exclusion principle. The Pauli exclusion principle predicts a forbidden zone along a meridian of the spherical halo of scattered particles, which...

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View of the LHCb detector. Image credit: CERN.

CERN Physicists Observe Three New Tetraquark Particles

Jul 6, 2016 by Enrico de Lazaro

Physicists on CERN’s LHCb collaboration say they’ve observed three new exotic particles – X(4274), X(4500) and X(4700) – and also confirmed the...

An illustration of the layer of dark hydrogen the team’s lab mimicry indicates would be found beneath the surface of gas giants like Jupiter. Image credit: Stewart McWilliams.

Gas Giant Planets May Contain Layers of ‘Dark Hydrogen,’ Say Physicists

Jun 24, 2016 by News Staff

On the surface of giant gaseous planets, hydrogen is a gas. But between this gaseous layer and the liquid metal hydrogen in the planet’s core lies a...

Physicists Identify Second Gravitational-Wave Event

Jun 16, 2016 by Sergio Prostak

An international team of scientists has identified a second gravitational wave event in the data from the twin detectors of the Laser Interferometer Gravitational-Wave...

Periodic table of the elements. Image credit: International Union of Pure and Applied Chemistry / Sci-News.com.

Nihonium, Tennessine, Oganesson, Moscovium: Four New Chemical Elements Get Names

Jun 9, 2016 by News Staff

Nihonium (Nh), moscovium (Mc), tennessine (Ts) and oganesson (Og) are the new names of chemical elements 113, 115, 117 and 118 on the periodic table. Periodic...

Chen Wang and co-authors have given Schrödinger’s cat a second box to play in. Image credit: Michael S. Helfenbein / Yale University.

Physicists Give Schrödinger’s Cat Second Box

May 27, 2016 by News Staff

Through new experiments involving the Schrödinger’s cat state paradox, physicists at Yale University have shown that the famous cat can be in two...

Noble gas atoms deposited on molecular network are investigated with a probing tip, which is decorated with a Xe atom. The measurements give information about the very weak van der Waals forces between these individual atoms. Image credit: University of Basel.

Van der Waals Forces of Individual Atoms Measured for First Time

May 24, 2016 by News Staff

For the first time, scientists have succeeded in measuring the strength of the very weak van der Waals forces passing between individual atoms. Noble gas...

Physicists discovered that water in the mineral beryl displays some unique and unexpected characteristics. Image credit: Jeff Scovil.

Physicists Discover New State of Water Molecule

Apr 26, 2016 by News Staff

Using computational modeling and neutron scattering, physicists have discovered a novel state of water molecule. Physicists discovered that water in the...

A schematic image representing a periodic variation in the density of Cooper pairs (pairs of blue arrows pointing in opposite directions) within a cuprate superconductor. Image credit: Brookhaven National Laboratory.

Cooper-Pair Density Wave: Elusive State of Superconducting Matter Detected for First Time

Apr 13, 2016 by News Staff

An international team of researchers, led by Prof. Séamus Davis of Cornell University and Brookhaven National Laboratory, and Dr. Andrew Mackenzie of...

Scientists inserted a small molecule named coralyne into the DNA and were able to create a single-molecule diode, which can be used as an active element in future nanoscale circuits. Image credit: University of Georgia / Ben-Gurion University of the Negev.

Researchers Create World’s Smallest Diode

Apr 5, 2016 by Enrico de Lazaro

A single-molecule diode, the world’s smallest, has been created by a team of researchers from Ben-Gurion University of the Negev and the University of...

The excitation of a spin liquid on a honeycomb lattice with neutrons. Image credit: Genevieve Martin, Oak Ridge National Laboratory.

Quantum Spin Liquid: Physicists Detect New Quantum State of Matter in 2D Material

Apr 4, 2016 by News Staff

An international team of scientists, led by Dr. Arnab Banerjee from Oak Ridge National Laboratory, has found evidence of a mysterious state of matter –...

X(5568). Image credit: V.M. Abazov et al. / Fermilab.

Physicists Discover New Tetraquark Particle: X(5568)

Feb 26, 2016 by Sergio Prostak

Physicists on the DZero international collaboration at Fermilab, the U.S. Department of Energy’s laboratory specializing in high-energy particle physics,...

The collision of two black holes is seen in this still from a computer simulation. Image credit: SXS.

Physicists Detect Gravitational Waves

Feb 11, 2016 by News Staff

For the first time, physicists have observed ‘ripples’ in the fabric of space-time called gravitational waves. The collision of two black holes is...

Gel model of a fetal brain after being immersed in liquid solvent, the resulting compression led to the formation of folds similar in size and shape to real brains. Image credit: Tuomas Tallinen et al.

Scientists Replicate Folding Human Brain in 3D

Feb 2, 2016 by News Staff

A variety of hypotheses on how the brain folds have been proposed but none have been directly used to make testable predictions. Now, a group of scientists...

Visualization of the structure of the created quantum knot: each colorful band represents a set of nearby directions of the quantum field that is knotted; note that each band is twisted and linked with the others once; untying the knot requires the bands to separate, which is not possible without breaking them. Image credit: David Hall.

Physicists Create Quantum Knots for the First Time

Jan 18, 2016 by Enrico de Lazaro

In a breakthrough discovery detailed in a paper in the journal Nature Physics, a team of physicists from Finland and the United States has found a way...

Nucleation of microdiamond from nanodiamond filaments which were quenched after the formation at 6,740 degrees Fahrenheit. Image credit: Jagdish Narayan / Anagh Bhaumik.

Q-Carbon: Scientists Discover New Allotrope of Carbon

Dec 1, 2015 by News Staff

A team of material scientists in the United States has discovered a novel allotrope of carbon, Q-carbon. Nucleation of microdiamond from nanodiamond filaments...

A new measurement by the STAR collaboration reveals that the force between antiprotons (p) is attractive and strong. Image credit: Brookhaven National Laboratory.

Physicists Measure Force of Interaction between Antiprotons

Nov 5, 2015 by News Staff

According to a large international team of physicists, the attractive force between antiprotons is similar to that between protons. A new measurement by...

Holograms are 3D light-fields that can be projected from a 2D surface; Asier Marzo of the University of Bristol and the Public University of Navarre and his colleagues have created acoustic holograms with shapes such as tweezers, twisters and cages that exert forces on particles to levitate and manipulate them. Image credit: Asier Marzo / Bruce Drinkwater / Sriram Subramanian.

European Researchers Create Acoustic Tractor Beam

Oct 28, 2015 by News Staff

A group of scientists from the United Kingdom and Spain have built the world’s first working acoustic tractor beam. Holograms are 3D light-fields that...

Artist’s rendition of spatially segregated domains of multipolar order in a crystal of strontium-iridium oxide (Sr2IrO4); the orientation of the multipolar order in each domain is depicted by the multi-lobed object. Image credit: Liuyan Zhao.

Physicists Discover New Electronic Phase of Matter

Oct 26, 2015 by News Staff

A group of physicists from the United States and Israel has discovered a novel phase of matter that is characterized by an unusual ordering of electrons. Artist’s...

A glueball is made up purely of gluons. Image credit: TU Wien.

Austrian Physicists Confirm Existence of Glueballs, Exotic Particles Composed of Pure Force

Oct 19, 2015 by News Staff

A particle called meson f0(1710) is the elusive ‘glueball,’ an exotic particle composed of pure force, according to a team of physicists at the Technische...

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