Black hole simulations on XSEDE supercomputers present new view of jets and accretion disks
Voracious absences at the center of galaxies, black holes shape the growth and death of the stars around them through their powerful gravitational pull and explosive ejections of energy.
Researchers create metamaterial that looks similar to 3D Minkowski spacetimes
Testing Einstein's E=mc2 in outer space
(Phys.org)—University of Arizona physicist Andrei Lebed has stirred the physics community with an intriguing idea yet to be tested experimentally: The world's most iconic equation, Albert Einstein's E=mc2, may be cor ...
Accelerators can search for signs of Planck-scale gravity
New experiment corrects prediction in quantum theory
An international team of scientists is rewriting a page from the quantum physics rulebook using a University of Florida laboratory once dubbed the coldest spot in the universe.
Mathematicians offer unified theory of dark matter, dark energy, altering Einstein field equations
(Phys.org)—A pair of mathematicians—one from Indiana University and the other from Sichuan University in China—have proposed a unified theory of dark matter and dark energy that alters Einstein's equations ...
Taking some guesswork out of high-energy physics
(Phys.org) -- SLAC theorist Stan Brodsky and his collaborator Xing-Gang Wu of Chongqing University have just made the lives of high-energy particle theorists the world over a bit easier. They've demonstrated ...
Qubits that never interact could exhibit past-future entanglement
The Big Bang versus the 'Big Bounce'
Two fundamental concepts in physics, both of which explain the nature of the Universe in many ways, have been difficult to reconcile with each other. European researchers developed a mathematical approach ...
Gravitational lens reveals details of distant, ancient galaxy
Thanks to the presence of a natural "zoom lens" in space, University of Chicago scientists working with NASA's Hubble Space Telescope have obtained a uniquely close-up look at the brightest gravitationally ...
Research confirms it's a small world, after all
(PhysOrg.com) -- A NASA-led research team has confirmed what Walt Disney told us all along: Earth really is a small world, after all.
Cracks in the Universe: Physicists are searching for the fingerprints of cosmic strings
Physicists are hot on the trail of one of strangest theorized structures in the universe. A team of researchers have announced what they think are the first indirect observations of ancient cosmic strings, ...
Origin of magnetic fields may lie in special relativity's spacetime distortions
Transformation optics make a U-turn for the better
(PhysOrg.com) -- Berkeley researchers have combined the scientific fields of transformation optics and plasmonics to demonstrate that with only moderate modifications of the dielectric component of a metamaterial, ...