Quantum Physics News

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Real-Time Look at Massive Star Development

A pair of images of a young star, made 18 years apart, has revealed a dramatic difference that is providing astronomers with a unique, "real-time" look at how massive stars develop in the earliest stages of their formation.

6 Apr 2015

Information May Not Get Lost in Black Holes

Shred a document, and you can piece it back together. Burn a book, and you could theoretically do the same. But send information into a black hole, and it's lost forever.

6 Apr 2015

Further Open Access Agreement Announced by CERN and Elsevier

CERN and Elsevier (link is external) have announced that articles published by CERN authors Elsevier Physics journals that are not covered by the SCOAP3 Open Access initiative will now be Open Access.

3 Apr 2015

Only a Single White Dwarf was Involved in Explosion of 3C 397 Supernova Remnant

Using archival data from the Japan-led Suzaku X-ray satellite, astronomers have determined the pre-explosion mass of a white dwarf star that blew up thousands of years ago. The measurement strongly suggests the explosion involved only a single white dwarf, ruling out a well-established alternative scenario involving a pair of merging white dwarfs.

3 Apr 2015

NASA's Hubble Photographs Ephemeral Ghosts of Quasars

NASA's Hubble Space Telescope has photographed a set of wispy, goblin-green objects that are the ephemeral ghosts of quasars that flickered to life and then faded.

3 Apr 2015

Atom-Specific Probing of Frontier-Orbital Interactions Enables Correlating Quantum-Chemical Properties with Reactivity

They developed their own experiment for this investigation at the Linac Coherent Light Source X-ray laser at SLAC National Accelerator Laboratory in Menlo Park, California, which provided time resolutions down to 100 femtoseconds, and the synchrotron radiation source BESSY II of Helmholtz-Zentrum Berlin.

3 Apr 2015

Behaviour of Quantum Crystals Can Help Answer Fundamental Questions

It is a situation familiar from one’s own living environment: relations between neighbours can be intense, yet also characterised by sensitivities. Complex quantum systems can be imagined in a similar way – especially when magnetism is involved.

3 Apr 2015

NASA's Curiosity Rover Reaches Martian Site with Two-Tone Mineral Veins

Two-tone mineral veins at a site NASA's Curiosity rover has reached by climbing a layered Martian mountain offer clues about multiple episodes of fluid movement. These episodes occurred later than the wet environmental conditions that formed lake-bed deposits the rover examined at the mountain's base.

2 Apr 2015

Astrophysicists Identify Galaxies Clumping Together Into Larger Galaxy Clusters

A discovery by a team of astrophysicists including UBC researchers promises to have major implications for the understanding of how structures in the universe formed 10 billion years ago. Hidden within images of some of the oldest light in the universe, the team identified what they believe are galaxies clumping together into the larger galaxy clusters we know today.

2 Apr 2015

Macroscopic Mechanical Resonators Manipulated in the Quantum Regime

Cooling of macroscopic and mesoscopic objects to the quantum ground states are of great interests not only for fundamental study of quantum theory but also for the broad applications in quantum information processing and high-precision metrology. However, the cooling limit is subjected to the quantum backaction, and ground state cooling is possible only in the resolved sideband limit, which requires the resonance frequency of the mechanical motion to be larger than the cavity decay rate.

2 Apr 2015