Physics News

Physicists Precisely Measure Electric Dipole Moment of Neutron

Abel et al present the result of an experiment to measure the electric dipole moment of the neutron at the Paul Scherrer Institute using Ramsey’s method of separated oscillating magnetic fields with ultracold neutrons. Image credit: Gerd Altmann.
Mar 2, 2020 by News Staff

In a paper in the journal Physical Review Letters, an international team of physicists reports the most precise measurement ever made of the electric dipole moment of the neutron, a subatomic particle found in the nucleus of every atom except that of hydrogen. Their results show that the neutron has a significantly smaller electric dipole moment than predicted by various theories about why matter remains in the Universe. Abel et al present the result...

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Artist’s impression of a cloud of trapped antihydrogen atoms. Image credit: Chukman So.

CERN Physicists Measure Quantum Effects in Energy Structure of Antihydrogen

Feb 28, 2020 by News Staff

In 1947, American physicist Willis Lamb and his colleagues observed an incredibly small shift in the energy levels of the hydrogen atom as the atom’s...

Physicists Probe Core of Strong Nuclear Interaction between Protons and Neutrons

Feb 27, 2020 by News Staff

The strong force is one of the four fundamental forces of nature, which also include gravity, electromagnetism and the weak nuclear force. The strong force...

Laser-cooled atom cloud viewed through microscope camera. Image credit: University of Otago.

Physicists Observe Three-Atom Collisions in Ground-Breaking Experiments

Feb 24, 2020 by News Staff

A team of physicists in New Zealand has held individual atoms of rubidium in place and observed previously unseen interactions. Laser-cooled atom cloud...

Electrons travel in cars with increasing numbers, giving rise to a conductance series that shows up in Pascal’s triangle. Image credit: Yun-Yi Pai.

Scientists Discover New Electronic State of Matter

Feb 19, 2020 by News Staff

A team of U.S. physicists and materials scientists has observed a new state of matter at the interface between two oxide materials: lanthanum aluminate...

An artist’s impression of the dissolving of the electronic ‘traffic jam:’ the red atoms are different in their quantum nature and allow transport of electrons in their surroundings. Image credit: Berend Zwartsenberg.

Physicists Pioneer New Way to Turn Metal into Insulator

Feb 14, 2020 by News Staff

A team of physicists led by the University of British Columbia has demonstrated a novel way to precisely control electrical currents by leveraging the...

Two electrons and two holes, created by light quanta, held together by a chessboard-like background. Image credit: TU Wien

Physicists Discover New Quasiparticle

Feb 5, 2020 by News Staff

Named π-ton (pi-ton), the newly-discovered quasiparticle consists of two electrons and two holes. Two electrons and two holes, created by light quanta,...

An artist’s depiction of a rapidly spinning neutron star and a white dwarf dragging the fabric of spacetime around its orbit. Image credit: Mark Myers, OzGrav ARC Centre of Excellence.

Exotic Binary System Confirms Relativistic Frame-Dragging

Jan 31, 2020 by News Staff

An international team of astronomers has found exciting new evidence for Lense-Thirring precession — an effect of relativistic frame-dragging —...

The interior of the Borexino detector. Image credit: Borexino Collaboration.

Borexino Detector Spots 53 Geoneutrinos

Jan 23, 2020 by Enrico de Lazaro

An underground particle detector called the Borexino detector has detected 53 antielectron neutrinos emanating from the Earth, so-called geoneutrinos. The...

In this illustration, one photon (purple) carries a million times the energy of another (yellow). Image credit: NASA / Sonoma State University / Aurore Simonnet.

Physicists Observe ‘Billions of Billions’ of Entangled Electrons

Jan 17, 2020 by News Staff

An international team of physicists says they have observed quantum entanglement among ‘billions of billions’ of flowing electrons in thin films of...

A 3D view of the Au20 cluster. Image credit: Li et al, doi: 10.1126/sciadv.aay4289.

Gold Atoms Take on Pyramidal Shape

Jan 8, 2020 by Enrico de Lazaro

An international team of researchers has presented strong evidence that individual clusters of twenty gold atoms (Au20) take on a pyramidal shape. A 3D...

Left: a tiny bead struck by a laser produces optical modes that circulate around the interior of the bead. Right: a simulation of how the optical field inside a 5-micron bead is distributed. Image credit: Berkeley Lab.

Researchers Create Nanoparticle-Based Microlasers

Jan 3, 2020 by News Staff

Researchers from the Molecular Foundry at Lawrence Berkeley National Laboratory have found a way to convert nanoparticle-coated microscopic plastic beads...

Electrons move between two arms of a metallic nanoantenna driven by a single-cycle light wave. Image credit: University of Konstanz.

Scientists Use Light to Transport Electrons at Ultrafast Speeds

Dec 27, 2019 by News Staff

A research team led by University of Konstanz scientists has demonstrated that light waves can be used to transport electrons at sub-femtosecond speeds...

Llewellyn et al realize an array of microring resonators (MRRs) to generate multiple high-quality single photons, which are monolithically integrated with linear-optic circuits that process multiple qubits with high fidelity and low noise. Image credit: Llewellyn et al, doi: 10.1038/s41567-019-0727-x.

Researchers Demonstrate Chip-to-Chip Quantum Teleportation

Dec 25, 2019 by News Staff

A research team led by University of Bristol scientists has successfully demonstrated quantum teleportation of information between two programmable micrometer-scale...

Anomalies in nuclear physics experiments may show signs of a new force. Image credit: Jw210913.

X17 Particle Might Solve Mystery of Dark Matter

Dec 10, 2019 by The Conversation

Professor Attila Krasznahorkay and his colleagues at ATOMKI (the Institute of Nuclear Research in Debrecen, Hungary) recently published a paper that hints...

In a state-of-the-art six-photon experiment, Proietti et al realize an extended Wigner’s friend scenario, experimentally violating the associated Bell-type inequality by five standard deviations. Image credit: Pete Linforth.

Objective Reality May Not Exist, Quantum Experiment Suggests

Nov 27, 2019 by The Conversation

In a paper published in the journal Science Advances, we show that, in the micro-world of atoms and particles that is governed by the strange rules of...

Tiny holes punched into a high-temperature superconducting material revealed that Cooper pairs can also conduct electricity the way metals do. Image credit: Brown University.

Scientists Uncover New State of Matter in Superconductor

Nov 15, 2019 by News Staff

An international team of physicists and materials scientists from the United States and China has discovered a new state of matter they’ve named ‘Cooper...

The CHIMERA printer uses low-power continuous wave lasers to create holograms on a highly sensitive photomaterial. Image credit: Yves Gentet.

Researchers Develop Third-Generation Digital Holographic Printer

Nov 5, 2019 by News Staff

A duo of researchers from France and South Korea has developed a third-generation holographic printing system that produces 3D holograms with an unprecedented...

Digital art by Les Bossinas, Cortez III Service Corp., 1998.

Physicists Propose New Method to Detect Traversable Wormholes

Oct 24, 2019 by News Staff

In a new paper published this month in the journal Physical Review D, a duo of theoretical physicists from Case Western Reserve University, the University...

A plutonium dioxide nanoparticle. Image credit: Kristina Kvashnina.

Physicists Create Unexpected New Form of Plutonium

Oct 21, 2019 by News Staff

Physicists using the European Synchrotron Radiation Facility have created a new compound of plutonium (Pu) with an unexpected, pentavalent oxidation state...

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