The top quark is the heaviest known subatomic particle we may call "elementary", i.e. one we describe as a point-like object; it weighs a full 66% more than the Higgs boson itself! Top was discovered in 1995 by the CDF and DZERO collaborations at the Fermilab Tevatron collider, which produced collisions between protons and antiprotons at an energy 7 times smaller than that of the proton-proton collisions now provided by the Large Hadron Collider at CERN.
quantum physical models treat Hilbert spaces, function theory and differential
calculus and integral calculus as separate entities. In the past nothing
existed that directly relates these ingredients, which together constitute the
quantum physical model. Thus, a need exists for a methodology that intimately
binds these ingredients into a consistent description of the structure and the
phenomena that occur in the model.
physics applies Hilbert spaces as the realm in which quantum physical research
is done. However, the Hilbert spaces contain nothing that prevents universe
from turning into complete chaos. Quantum physics requires extra mechanisms
that ensure sufficient coherence.
built-in principles. If you understand these built-in principles, then these
principles teach a lesson.
I am happy to announce here that a session on "Statistical Methods for Physics Analysis in the XXI Century" will take place at the "Quark Confinement and the Hadron Spectrum
" conference, which will be held in Thessaloniki on August 28th to September 3rd this year. I have already mentioned this a few weeks ago, but now I can release a tentative schedule of the two afternoons devoted to the topic.
I am spending some time today at the Altarelli Memorial Symposium, which is taking place at the main auditorium at CERN. The recently deceased Guido Altarelli was one of the leading theorists who brought us to the height of our understanding of the Standard Model of particle physics, and it is heart-warming to see so many colleagues young and old here today - Guido was a teacher for all of us.
I have recently put a bit of order into my records of activities as a science communicator, for an application to an outreach prize. In doing so, I have been able to take a critical look at those activities, something which I would otherwise not have spent my time doing. And it is indeed an interesting look back.
Overall, I have been blogging continuously since January 4th 2005. That's 137 months! By continuously, I mean I wrote an average of a post every two days, or a total of about 2000 posts, 60% of which are actual outreach articles meant to explain physics to real outsiders.
My main internet footprint is now distributed in not one, but at least six distinct web sites:
With CERN's Large Hadron Collider slowly but steadily cranking up its instantaneous luminosity, expectations are rising on the results that CMS and ATLAS will present at the 2016 summer conferences, in particular ICHEP (which will take place in Chicago at the beginning of August). The data being collected will be used to draw some conclusions on the tentative signal of a diphoton resonance, as well as on the other 3-sigma effects seen by about 0.13 % of the searches carried out on previous data this far.
Despite the foul weather that has sieged central Europe in the past few days, with floods, destruction, even deaths, and the occasional evacuation of the auditorium where physicists discussed their recent results, the 28th edition of the "Rencontres de Blois
" has taken place as usual.
The conference is a periodic event where particle physics and cosmology are discussed with an attention to interdisciplinarity. It takes place in the city of Blois, in central France, a nice town on the river Loire. There, a sizable number of interesting talks have been taking place in the last few days. But one in particular has stirred the interest of particle physicists worldwide.
Higher dimensional spaces allow configurations that are unexpected from lower dimensions. For example, four-dimensional topology escapes full classification. Since complexity is related to dimensionality, there is a certain “magic” to it. Increasing complexity is advantageous generally for adaptation. We can give examples from nanotechnology. With catalysts, starting with mono-metallic ones, the desired catalytic prowess increases almost geometrically with the number of different substances involved. Bimetallic catalysts multiply the catalytic rate constants of mono metallic compounds.