Physics News

Loop Quantum Gravity Theory Could Answer Fundamental Questions about Black Holes

An artist’s depiction of loop quantum gravity effects in a black hole. The bottom half of the image depicts the black hole which, according to general relativity, traps everything including light. Loop quantum gravity overcomes this tremendous pull and liberates everything shown in the top half of image, thus solving the fundamental problem of black hole singularity. Image credit: A. Corichi & J.P. Ruiz.
Dec 26, 2018 by News Staff

Loop quantum gravity is a theory that uses quantum mechanics to extend gravitational physics beyond Einstein’s theory of general relativity. Previous work in loop quantum gravity analyzed the quantum nature of the Big Bang, and now two new works, published in the journal Physical Review Letters and the journal Physical Review D, extend those results to black hole interiors. An artist’s depiction of loop quantum gravity effects in a black hole....

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Visualization of an expanding drop of quark-gluon plasma. Image credit: Javier Orjuela Koop, University of Colorado, Boulder.

Physicists Create Quark-Gluon Plasma Droplets

Dec 12, 2018 by News Staff

Physicists from the PHENIX Collaboration have created droplets of a liquid-like state of matter called quark-gluon plasma, forming three distinct shapes...

The current, widely recognized model of the Universe, called LambdaCDM, tells us nothing about what dark matter and dark energy are like physically. We only know about them because of the gravitational effects they have on other, observable matter. Dr. Farnes’ model offers a new explanation. Image credit: NASA / ESA / M. Livio / Hubble 20th Anniversary Team, STScI.

Negative-Mass Dark Fluid: Astonishing New Theory Could Explain Universe’s Missing 95%

Dec 5, 2018 by News Staff

The standard cosmological model known as LambdaCDM can only explain 5% of the observable Universe. The remaining 95% is famously made up almost entirely...

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

Physicists Detect Four New Gravitational Waves

Dec 4, 2018 by News Staff

The twin LIGO (Laser Interferometer Gravitational-Wave Observatory) detectors, located in Livingston, Louisiana, and Hanford, Washington, and the Virgo...

Left: average of known decay properties assigned to 288Mc and its daughters. Right: details of decay chains detected at the FIONA focal plane. Unobserved decays within each decay chain are indicated as ‘unobserved’ and are assumed to have been emitted out of the open end of the detector array. The x position of decays observed in the focal-plane detector is also given. Image credit: Gates et al, doi: 10.1103/PhysRevLett.121.222501.

Physicists Measure Mass Numbers of Nihonium and Moscovium

Dec 3, 2018 by News Staff

Physicists using the FIONA (For the Identification Of Nuclide A) device at the Department of Energy’s Lawrence Berkeley National Laboratory’s 88-inch...

A replica of the prototype of the kilogram at the Cité des Sciences et de l’Industrie in Paris, France. Image credit: Japs / CC BY-SA 3.0.

Scientists Redefine Four Basic Metric Units: Kilogram, Ampere, Kelvin and Mole

Nov 20, 2018 by News Staff

After decades of groundbreaking laboratory work, the world’s scientific and technical community came together on November 16, 2018, to redefine kilogram...

Using electron tomography, Pellenq et al probed a sample of kerogen to determine its internal structure. At left, the sample as seen from the outside, and at right, the detailed 3D image of its internal pore structure. Image credit: Pellenq et al, doi: 10.1073/pnas.1808402115.

Researchers Finally Decode Internal Structure of Kerogen

Nov 14, 2018 by News Staff

Kerogen is a waxy, insoluble organic substance dispersed in sedimentary rocks and is the precursor of oil and gas. In a new study, published in the Proceedings...

Turnbull et al synthesized a single crystal of ι–N2 in a diamond anvil cell from ε–N2 at 65 GPa and 477 degrees Celsius. Image credit: Turnbull et al, doi: 10.1038/s41467-018-07074-4.

Physicists Solve Structure of Unusually Complex Form of Nitrogen

Nov 13, 2018 by Enrico de Lazaro

An international team of experimental physicists has for the first time determined the structure of ι-N2, a crystallized version of nitrogen. Turnbull...

Atomic chamber in which tractor beams were created. Image credit: Institute for Photonics and Advanced Sensing.

Physicists Create Tractor Beam for Atoms

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...

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...

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