K computer tagged posts

Image of the di-Omega, by Keiko Murano

Based on complex simulations of quantum chromodynamics performed using the K computer, one of the most powerful computers in the world, the HAL QCD Collaboration, made up of scientists from the RIKEN Nishina Center for Accelerator-based Science and the RIKEN Interdisciplinary Theoretical and Mathematical Sciences (iTHEMS) program, together with colleagues from a number of universities, have predicted a new type of “dibaryon” – a particle that contains 6 quarks instead of the usual three. Studying how these elements form could help scientists understand the interactions among elementary particles in extreme environments eg the interiors of neutron stars or the early universe moments after the Big Bang.

Particles known as “baryons” – principally protons...

Atoms in silicon dioxide are hit by the yellow light wave (from the left) causing the electrons around each atom to oscillate. This displacement absorbs energy from the light wave. At the end of the cycles the absorbed energy is returned to the light wave. Recording of the temporal evolution of the light field after passage through the sample allows the first real-time observation of the attosecond-speed electron motion inside solids. Credit: Image courtesy of Max Planck Institute of Quantum Optics

Light waves might be able to drive future transistors. The electromagnetic waves of light oscillate approximately 1M times in a billionth of a second, hence with petahertz frequencies. In principle also future electronics could reach this speed and become 100...