SLAC National Accelerator Laboratory at Stanford
By Ian Bailey, Lancaster University
Scientists working on an experiment at the SLAC National Accelerator Laboratory in the US have taken a step forward in developing a technology which could significantly reduce the size of particle accelerators. The technology is able to accelerate particles more rapidly than conventional accelerators at a much smaller size.
Last year, two experiments at the Large Hadron Collider announced the finding of a new elementary particle - the long-theorized Higgs particle.
Many calculations indicate that the particle discovered last year in the CERN particle accelerator was indeed the famous Higgs particle. Physicists agree that the CERN experiments did find a new particle that had never been seen before, but an international team say they are not convinced it was the Higgs particle.
Maybe it just looks like it. And maybe it is not alone.
The research team analyzed the existing scientific data from the LHC and published an analysis in Physical Review D.
Since 1999, a conjecture by Asher Peres, the 'inventor' of quantum teleportation, that the weakest form of quantum entanglement can never result in the strongest manifestation of the phenomenon, has been debated.
Peres thought about the phenomenon of quantum entanglement and its different manifestations. When two objects (take photons, for example) are entangled, they remain correlated regardless of the distance that separates them physically: whether they are separated by a millimeter or by several kilometers, any action done to one of them will immediately affect the other. To check whether a system is entangled, scientists test for Bell's inequality.
Blame Jack Kirby and Stan Lee for the word "formuloop". They did not devise it. They made a comic book about four people who went into space and then returned to Earth with magic super powers. Such a fantastic time I had reading their adventures as a kid. One of their catch phrases was "swell foop", which is a type of Spoonerism, and that has nothing to do with "formuloop" other than that my word was an inevitable evolution of "swell foop". But if that doesn't make it clear, then let me put the relationship this way: we strive to relate what we see to what we know, thus reinforcing what we believe; hence, we have a sustainable formulaic way of keeping ourselves in the same informational loop.
Open Access Post Publication Peer Review as done on the Winnower is a bold experiment which my new model for reconciling General Relativity and Quantum Field Theory has tested. The model I propose is simply a conceptual inversion. Instead of making General Relativity into a QFT by some means, instead we can attempt to make QFT even more relativistic than it already is. (Since QFT is a result of formulating quantum mechanics so that it obeys Special Relativity) This idea like every new idea meets with a deal of healthy skepticism. Even I am skeptical of it, out of five stars I'd give it at most three.
Results of a new search for single top production and large missing energy have been published by the ATLAS collaboration in a recent preprint.
I think it is worthwhile to have a look at the idea behind this new search, as the signature of invisible particles produced in LHC collisions and escaping the detectors is important in many of the current and future investigations of beyond-the-standard-model physics.
String theory is a hypothetical framework where particle physics is replaced by one-dimensional objects called strings. It was originally proposed as a way to explain the strong force, then advocates re-purposed it for quantum gravity, and now it is being reconfigured again, with "commutation rules" of quantum mechanics.
The heart of what became string theory began in the early 20th century and then got jumbled in with a lot of philosophical ideas - 'what if there are dimensions we can't see?' A fifth dimension was a nice discussion, but without being detected it was just that. As the century moved on, Kaluza-Klein theory, S-matrix theory, everyone kept coming up with new stuff and it all eventually became what we now know as String Theory.
The popular description of virtual particles “borrowing” energy and popping in and out of existence all the time is very misleading. There are no such processes “really happening” in the way of a naïve, classically mechanistic physicalism. Instead, all potential partial processes consistent with the observations are together what the observation supervenes on.
Just a short entry to mention that the blog of my colleague Michael Schmitt, a professor at Northwestern University and a member of the CMS collaboration, is as active as ever, with several very interesting and well-written pieces recently published:
The Large Hadron Collider at the CERN laboratories in Geneva is currently in shutdown, finalizing the upgrades that will allow it to restart next year at the centre-of-mass energy of 13 TeV - over 60% more than the last 8 TeV run. ATLAS and CMS have collected no more proton-proton collisions since almost two years ago; yet the collaborations are as busy as ever producing physics results from the analysis of the 2012 data.
Rather than focusing on any single result, below I give some highlights of the most recent publications by CMS. Another post will discuss ATLAS results in a few days.