Since 1935, when Austrian physicist Erwin Schrödinger created his famous thought experiment about a cat that was both alive and dead, physicists have tried to create large scale systems to test how the rules of quantum mechanics apply to everyday objects.
Researchers say they have made a significant step forward in this direction by creating a large system that is in two substantially different states at the same time
Understanding Schrödinger's cat
I reported two days ago on the new measurements by the CMS Collaboration of the decay of B hadrons into muon pairs, revealed at the opening of the EPS 2013 conference in Stockholm and in a preprint. Funnily, I wrote the piece oblivious of the LHCb result, which is basically equivalent (in importance, precision, and sensitivity) to the CMS one; when I found out that LHCb had also a comparable result, I made up for that by pointing out the LHCb result in a "UPDATE" at the end of the post - I did not want to rewrite half of the piece!
Today I am quite happy to report of a new groundbreaking result from the CMS collaboration at the CERN LHC - the experiment to which I devote 100% of my research time. We published overnight a report on the Cornell arxiv
, and will present this week at the EPS conference in Stockholm
, of the observation of B_s meson decays to muon pairs, an exceedingly rare process which is of extreme importance for the searches of new physics beyond the standard model. And in so doing, CMS now leads this race, with better results than LHCb and ATLAS. (UPDATE
: but see below, at the bottom of the article).
Neutrinos are the second most abundant particles in the Universe, after photons, but when it comes to being elusive they can compete with anything. That's due to their having extremely weak interactions with all other particles, which leads to them being called 'ghost particles’.
Neutrinos are invisible but could carry as much mass as all other known forms of matter, traveling almost at the speed of light over fantastic distances. Their tiny masses have important consequences for the structures in the Universe and they are the driving element in the explosion of Supernovae.
NASA's Solar Dynamics Observatory and the Reuven Ramaty High Energy Solar Spectroscopic Imager have provided the most comprehensive movie ever of a mysterious process at the heart of all explosions on the sun: magnetic reconnection.
Magnetic reconnection happens when magnetic field lines come together, break apart and then exchange partners, snapping into new positions and releasing a jolt of magnetic energy. This process lies at the heart of giant explosions on the sun, such as solar flares and coronal mass ejections, which can fling radiation and particles across the solar system.
The querelle on the device patented by Andrea Rossi, the E-CAT, which allegedly produces heat from nuclear fusion processes inside a small cylindrical reactor fueled with Hydrogen and Nickel powder, continues to draw the attention of the gullible as well as that of the knowledgeable. It is just entertaining to both!
This morning I had a funny dream, and as I woke up at the end of it and watched the clock with the only eye I had managed to open, I realized it was not yet really time to wake up. On the other hand, I really liked the dream I had had: it was quite vivid and detailed, plus it lent an occasion for a blog post!
Hence I crawled out of the bed and reached for the nearest laptop in order to download the contents of my mind before it made room for something else and the dream got lost forever.
Like gems hidden in mountains of sand, I have sifted through vast amounts of data which have been gathered by surveys covering wide areas of the sky at particular wavelengths, and found likely
star forming cores, hints of circumstellar disk and outflows in regions of massive star formation. The procedural lesson from my masters thesis is that there are discoveries waiting to be made by comparing data sets gathered at different frequencies, and by conducting coordinated multi-spectral surveys of massive star forming regions.
Like HAL 9000 in the wonderful movie "2001 - the space odyssey", the CDF detector is being disassembled piece by piece, losing its functionality bit by bit, and turning from one of the most complex electronics systems ever built into a pile of junk in the course of a long, slow process. The central part of the detector has been transported out of the collision hall on rails, into the assembly hall, which is now serving the opposite purpose. If you ever visited Fermilab, the assembly hall is inside the big orange building you drove by as you got to the Wilson Hall from the east entrance.
What can be logically prior, what must be assumed, what is the metaphysically necessary apriori starting point? Here I present the one necessary before I can focus on understanding time in order to derive Einstein locality. These are crucial steps in rendering quantum mechanics naturally expected,[1,2] which is the only interesting aim, because Einstein’s relativity alone easily emerges from classical substrates, while the apparent non-locality of quantum mechanics cannot; well, except via brain-in-vat/The Matrix scenarios, but that just underlines how quantum mechanics indeed relates directly to the apriori conditions of phenomena.