Scientists at the world's largest smasher announced today that they have discovered two new subatomic particles never seen before that could widen our understanding of the universe. An experiment using the European Organization for Nuclear Research's Large Hadron Collider found the new particles, which were predicted to exist, and are both baryons made from three quarks bound together by a strong force.
Inspired perhaps by Harry Potter's invisibility cloak, scientists have recently developed...
A team of scientists hope to trace the origins of gamma-ray bursts with the aid of giant space...
Univ. of Tennessee, Knoxville’s College of Engineering has made recent headlines for discoveries...
For such humble creatures, single-celled paramecia have remarkable sensory systems. Give them a sharp jab on the nose, they back up and swim away. Jab them in the behind, they speed up their swimming to escape. But according to new research, when paramecia encounter flat surfaces, they’re at the mercy of the laws of physics.
New research by a team of European physicists could explain why the universe did not collapse immediately after the Big Bang. Studies of the Higgs particle have suggested that the production of Higgs particles during the accelerating expansion of the very early universe (inflation) should have led to instability and collapse.
A team of New York Univ. and Univ. of Barcelona physicists has developed a method to control the movements occurring within magnetic materials, which are used to store and carry information. The breakthrough could simultaneously bolster information processing while reducing the energy necessary to do so.
Physicists at Australian National Univ. have engineered a spiral laser beam and used it to create a whirlpool of hybrid light-matter particles called polaritons. The ability to control polariton flows in this way could aid the development of completely novel technology to link conventional electronics with new laser and fiber-based technologies.
For the first time, scientists have vividly mapped the shapes and textures of high-order modes of Brownian motions—in this case, the collective macroscopic movement of molecules in microdisk resonators—researchers at Case Western Reserve Univ. report. To do this, they used a record-setting scanning optical interferometry technique.
A study at the SLAC National Accelerator Laboratory suggests for the first time how scientists might deliberately engineer superconductors that work at higher temperatures. In their report, a team of researchers explains why a thin layer of iron selenide superconducts at much higher temperatures when placed atop another material, which is called STO for its main ingredients strontium, titanium and oxygen.
While the Martinis Lab at the Univ. of California, Santa Barbara has been focusing on quantum computation, they have also been exploring qubits for quantum simulation on a smaller scale. The team worked on a new qubit architecture, which is an essential ingredient for quantum simulation, and allowed them to master the seven parameters necessary for complete control of a two-qubit system.
Researchers at The Univ. of Texas at Austin have achieved a milestone in modern wireless and cellular telecommunications, creating a radically smaller, more efficient radio wave circulator that could be used in cellphones and other wireless devices, as reported in Nature Physics. The new circulator has the potential to double the useful bandwidth in wireless communications by enabling full-duplex functionality.
What time is it? The answer, no matter what your initial reference may be, will always trace back to the atomic clock. The international standard for time is set by atomic clocks—room-sized apparatuses that keep time by measuring the natural vibration of atoms in a vacuum. The frequency of atomic vibrations determines the length of one second.
X-rays are widely used in medicine and in materials science. To take a picture of a broken bone, it’s enough to create a continuous flux of x-ray photons, but in order to study time-dependent phenomena on very short timescales, short x-ray pulses are required. One possibility to create short hard x-ray pulses is hitting a metal target with laser pulses.
A study conducted in part at the SLAC National Accelerator Laboratory has revealed how a key human protein switches from a form that protects cells to a form that kills them—a property that scientists hope to exploit as a “kill switch” for cancer. The protein, called cIAP1, shields cells from programmed cell death, or apoptosis.
For more than 50 years, scientists have debated what turns particular oxide insulators, in which electrons barely move, into metals, in which electrons flow freely. Some scientists sided with Nobel Prize–winning physicist Nevill Mott in thinking direct interactions between electrons were the key. Others believed, as did physicist Rudolf Peierls, that atomic vibrations and distortions trumped all.
A team of engineers and scientists has identified a source of electronic noise that could affect the functioning of instruments operating at very low temperatures, such as devices used in radio telescopes and advanced physics experiments. The findingscould have implications for the future design of transistors and other electronic components.
In classrooms and everyday conversation, explanations of global warming hinge on the greenhouse gas effect. In short, climate depends on the balance between two different kinds of radiation: The Earth absorbs incoming visible light from the sun, called “shortwave radiation,” and emits infrared light, or “longwave radiation,” into space.
Scientists from SLAC National Accelerator Laboratory and the Univ. of California, Los Angeles have shown that a promising technique for accelerating electrons on waves of plasma is efficient enough to power a new generation of shorter, more economical accelerators. This could greatly expand their use in areas such as medicine, national security, industry and high-energy physics research.
The process of phase changes- those transitions between states of matter- is more complex than previously thought. A team researchers has found that we may need to rethink one of science’s building blocks and illustrate how a proper theoretical description of transitions has remained unclear.
Last year CERN announced the finding of a new elementary particle, the Higgs particle. But, maybe it wasn't the Higgs particle– maybe it just looks like it. And maybe, it is not alone.
A reliable way of predicting the flow of traffic could be a great convenience for commuters, as well as a significant energy-saver. Now a team of researchers from MIT, the Univ. of Notre Dame, and elsewhere has devised what they say is an effective and relatively simple formula for making such predictions.
Scientists from the Department of Energy's SLAC National Accelerator Laboratory and the Univ. of California, Los Angeles have shown that a promising technique for accelerating electrons on waves of plasma is efficient enough to power a new generation of shorter, more economical accelerators.
The physics community has spent decades searching for and finding no evidence that dark matter is made of tiny exotic particles. Case Western Reserve Univ. theoretical physicists suggest researchers consider looking for candidates more in the ordinary realm and, well, more massive. Dark matter is unseen matter, that, combined with normal matter, could create the gravity that, among other things, prevents spinning galaxies from flying apart.
Results from experiments at the Relativistic Heavy Ion Collider, a particle collider located at the Brookhaven National Laboratory, reveal new insights about how quarks and gluons, the subatomic building blocks of protons, contribute to the proton’s intrinsic angular momentum, a property more commonly known as “spin.”
If you can uniformly break the symmetry of nanorod pairs in a colloidal solution, you’re a step ahead of the game toward achieving new and exciting metamaterial properties. But traditional thermodynamic-driven colloidal assembly of these metamaterials, which are materials defined by their non-naturally-occurring properties, often result in structures with high degree of symmetries in the bulk material.
Two Univ. of Southern California researchers have proposed a link between string field theory and quantum mechanics that could open the door to using string field theory as the basis of all physics. In their paper, which reformulated string field theory in a clearer language, they showed a set of fundamental quantum mechanical principles known as “commutation rules’’ that may be derived from the geometry of strings joining and splitting.
A disappearing act was the last thing Rice Univ. physicist Randy Hulet expected to see in his ultracold atomic experiments, but that is what he and his students produced by colliding pairs of Bose Einstein condensates (BECs) that were prepared in special states called solitons. Hulet’s team documented the strange phenomenon in a new study published online in Nature Physics.
Researchers studying iron-based superconductors are combining novel electronic structure algorithms with the high-performance computing power of the U.S. Dept. of Energy’s Titan supercomputer at Oak Ridge National Laboratory to predict spin dynamics, or the ways electrons orient and correlate their spins in a material.
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