Physics News

Physicists Create Tractor Beam for Atoms

Atomic chamber in which tractor beams were created. Image credit: Institute for Photonics and Advanced Sensing.
Nov 2, 2018 by News Staff

Rather than sucking space ships into a space-station, a tractor beam created by University of Adelaide researcher Ashby Hilton and his colleagues pulls atoms into a microscopic hole at the center of a special optical fiber. Atomic chamber in which tractor beams were created. Image credit: Institute for Photonics and Advanced Sensing. “Although tractor beams are green or blue in the movies, in this case the trap is made of invisible infrared light,”...

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Electrons Are Perfectly Spherical, New Measurements Confirm

Oct 18, 2018 by News Staff

Physicists from the Advanced Cold Molecule Electron Electric Dipole Moment (ACME) Collaboration have examined the shape of an electron’s charge with...

An event from the first xenon-xenon collision at the Large Hadron Collider at 5.44 TeV registered by ALICE; a colored track (blue) corresponds to the trajectory of a charged particle produced in a single collision. Image credit: ALICE Collaboration.

Universe’s Beginning was Fluid, Physicists Say

Oct 17, 2018 by News Staff

Physicists from the ALICE (A Large Ion Collider Experiment) Collaboration at CERN have gained new insights into the properties of the quark-gluon plasma,...

The LHCb magnet. Image credit: CERN.

CERN Physicists Discover Two New Particles

Oct 1, 2018 by News Staff

Physicists from CERN’s Large Hadron Collider beauty (LHCb) experiment have found two never-before-seen particles, as well as hints of another new particle,...

Neutron stars are the smallest, densest stars in the Universe. True to their name, neutron stars are composed almost entirely of neutrons. Duer et al suggest that some properties of neutron stars may be influenced not only by their multitude of densely packed neutrons, but also by a substantially smaller fraction of protons -- positively charged particles that make up just 5% of a neutron star. This is an illustration of a neutron star. Image credit: Casey Reed, Penn State University.

Nuclear Pasta: Exotic Substance in Neutron Stars’ Crust May Be Universe’s Strongest Material

Sep 19, 2018 by News Staff

An international team of researchers from McGill University, California Institute of Technology and Indiana University has calculated the strength of nuclear...

Nakamura et al record highest magnetic field ever achieved indoors. Image credit: Windell Oskay / CC BY 2.0.

Japanese Physicists Generate Strongest Magnetic Field Ever Achieved Indoors

Sep 18, 2018 by News Staff

Physicists from the Institute for Solid State Physics at the University of Tokyo, Japan, have recorded the largest magnetic field ever generated indoors...

A chip designed to operate as a 128-qubit superconducting adiabatic quantum optimization processor. Image credit: D-Wave Systems, Inc.

Physicists Demonstrate ‘Teleportation’ of Quantum Gate between Two Qubits

Sep 6, 2018 by News Staff

A team of scientists at Yale University has experimentally demonstrated one of the key steps in building the architecture for quantum computers —...

A candidate event display for the production of a Higgs boson decaying to two bottom quarks (blue cones), in association with a W boson decaying to a muon (red) and a neutrino. The neutrino leaves the detector unseen, and is reconstructed through the missing transverse energy (dashed line). Image credit: ATLAS Collaboration / CERN.

Physicists Observe Long-Sought Decay of Higgs Boson to Bottom Quarks

Aug 28, 2018 by News Staff

Physicists from the ATLAS and CMS collaborations at CERN’s Large Hadron Collider have observed the Higgs boson decaying into a pair of bottom quarks...

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

CERN Physicists Observe Lyman-alpha Transition in Antihydrogen

Aug 24, 2018 by News Staff

Physicists from the ALPHA Collaboration at CERN have detected the Lyman-alpha transition — when the hydrogen electron transitions between the lowest-energy...

How hot is Schrödinger’s coffee? Image credit: Myriams Fotos / Wynn Pointaux / Sci-News.com.

Measuring Temperature of Schrödinger’s Coffee

Aug 15, 2018 by News Staff

A new uncertainty relation, linking quantum mechanics and the precision with which temperature can be measured, has been discovered by University of Exeter...

Neutron stars are the smallest, densest stars in the Universe. True to their name, neutron stars are composed almost entirely of neutrons. Duer et al suggest that some properties of neutron stars may be influenced not only by their multitude of densely packed neutrons, but also by a substantially smaller fraction of protons -- positively charged particles that make up just 5% of a neutron star. This is an illustration of a neutron star. Image credit: Casey Reed, Penn State University.

Protons May Have Outsize Influence on Properties of Neutron Stars

Aug 14, 2018 by News Staff

A study conducted by an international consortium called the CLAS Collaboration, made up of 182 members from 42 institutions in 9 countries, has confirmed...

Ahn et al levitated a nanoparticle in vacuum and driven it to rotate at high speed, which they hope will help them study the properties of vacuum and quantum mechanics. Image credit: Vincent Walter, Purdue University.

Researchers Develop World’s Fastest Nanomechanical Rotor

Jul 24, 2018 by News Staff

At more than 60 billion revolutions per minute, a nanomechanical rotor developed by Purdue University researcher Tongcang Li and co-authors is more than...

Rossi et al operate a hybrid electron pump in silicon obtained by coupling a quantum dot to multiple parasitic states and achieve robust current quantization up to a few gigahertz. Image credit: Rossi et al, doi: 10.1021/acs.nanolett.8b00874.

Researchers Move One Step Closer to High-Performance Quantum Computing

Jul 12, 2018 by News Staff

A multinational team of researchers led by University of Cambridge scientist Dr. Alessandro Rossi and University of Adelaide’s Dr. Giuseppe Tettamanzi...

Nitrogen is most-commonly bonded with itself in diatomic N2 molecules; a new study confirms that it becomes a metallic fluid when subjected to the extreme pressure and temperature conditions found deep inside the Earth and other planets. Image credit: Alexander Goncharov.

Extreme Pressures and Temperatures Turn Nitrogen Metallic

Jul 10, 2018 by News Staff

New research indicates that nitrogen, one of the most-common elements in the Universe and the dominant gas in the atmosphere of Earth, becomes a metallic...

Excitation spectra of the Higgs-like state: (a) excitation spectra of the Higgs-like state for different interaction strengths, 1/(kFa); the different levels of background condensate fraction are due to the different 1/(kFa); the solid lines shows the Gaussian fit to the high-frequency side of the spectra; the error bars show the standard deviation of approximately four measurements; (b) time-of-flight image of the condensate with the thermal background subtracted at 1/(kFa)=−0.43; rings indicate momentum intervals of 0.02kF; (c) momentum-resolved analysis of the Higgs excitation inside the condensate by averaging the optical density in the color-coded rings in (b) for different modulation frequencies; the resonance occurs at the same modulation frequency for all momenta. Image credit: Behrle et al, doi: 10.1038/s41567-018-0128-6.

Experiment Provides Further Insights into Higgs Boson Physics

Jun 29, 2018 by News Staff

A new experiment by physicists at the University of Bonn, Germany, has achieved a Higgs-like state in a system composed of ultracold atoms. Excitation...

Illustration of part of the periodic table of elements with four new elements in period 7, with oganesson specifically highlighted. Image credit: Erin O’Donnell, National Superconducting Cyclotron Laboratory / Andy Sproles, Oak Ridge National Laboratory.

Researchers Explore Limits of the Periodic Table of Elements

Jun 20, 2018 by News Staff

At 150 years old, the periodic table of chemical elements is still growing. In 2016, four new elements with atomic numbers 113, 115, 117 and 118 were added...

Visualization of a data event from the tt¯H(γγ) Had BDT bin with the largest signal over background ratio; the event contains two photon candidates, with a diphoton mass of 125.4 GeV; in addition, six jets are reconstructed using the anti-kt algorithm and R = 0.4, including one jet that is b-tagged using a 77% efficiency working point; the photons correspond to the green towers in the electromagnetic calorimeter, while the jets (b-jets) are shown as yellow (blue) cones. Image credit: ATLAS Collaboration.

Physicists Observe Simultaneous Production of Higgs Boson with Top Quark-Antiquark Pair

Jun 8, 2018 by News Staff

In July 2012, ATLAS (A Toroidal LHC ApparatuS) and CMS (Compact-Muon-Solenoid) experiments at CERN’s Large Hadron Collider jointly announced the discovery...

The first artist’s illustration shows a key part of the process that created this new black hole, as the two neutron stars spin around each other while merging. The purple material depicts debris from the merger. Image credit: NASA / CXC / M.Weiss.

Recent Gravitational-Wave Event Likely Created Low-Mass Black Hole

Jun 5, 2018 by News Staff

A new study using X-ray data from NASA’s Chandra X-ray Observatory indicates that the neutron star merger that became the gravitational wave source,...

This artist’s impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the Cosmic Microwave Background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics.

Does Small Fraction of Dark Matter Particles Carry Electric Mini-Charge?

Jun 4, 2018 by News Staff

A duo of astrophysicists is proposing a new model for the invisible material that makes up most of the Universe: it’s possible that a small fraction...

Ruthenium. Image credit: Metalle-W / CC BY-SA 3.0.

Researchers Discover 4th Room-Temperature Ferromagnetic Element: Ruthenium

May 29, 2018 by News Staff

A platinum-group chemical element called ruthenium (Ru) is the fourth single element to have unique ferromagnetic properties at room temperature. Ruthenium....

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