Blog Profile / The Gauge Connection
| URL : | http://marcofrasca.wordpress.com/ | |
|---|---|---|
| Filed Under: | Academics / Physics | |
| Posts on Regator: | 253 | |
| Posts / Week: | 1.1 | |
| Archived Since: | December 19, 2008 | |
Blog Post Archive
Turing machine and Landauer limit
My inactivity period was due to a lack of real news around the World. But I was not inactive at all. My friend Alfonso Farina presented to me another question that occupied my mind for the last weeks: What is the energy cost for computation? The first name that comes to mind in such a [...]
New entries in my lab
With my son I have recently measured Johnson noise and got its square root (see here) that proved to be in agreement with my theoretical expectations (see here). We built up the main instrument, the low-noise high-gain amplifier but my aim has always been to get a meaningful lab instrumentation that could make easier this [...]
Ereditato resigns
Antonio Ereditato resigns as OPERA spokeperson following the failure of the supeluminal neutrino affair. He will be part of history but through a harsh lesson we all learned. He remembers me another character of history of physics in a similar situation, Prosper-René Blondlot and N ray affair. So, science is a self-correcting process but some [...]
Johnson noise and its square root: The video
We have uploaded the video of the measurement of the square root of Johnson noise: This will participate to the Google Science Fair 2012. Filed under: Physics Tagged: Johnson-Nyquist noise, Low noise preamplifier, Noise measurement, Stochastic processes
Johnson noise and its square root
Following my recent work on stochastic processes and quantum mechanics (see here and here), after I showed its existence with numerical computation (see here), this time I moved one step forward with an experimental setup. The idea come out from my son Giorgio. He is a teen with a lot of ideas and was of [...]
Higgs: Tevatron confirms CERN findings
In these days, at Moriond on Italian Alps, a conference is held (see here). Today is the Higgs day and people at Tevatron confirmed the clues found by CERN and announced last December. Higgs particle mass should be around 125 GeV. This has being reverberated on the media (see here). The evidence found at Tevatron [...]
No faster than light neutrinos after all…
Media all around the World are spreading the news. A defective apparatus at CERN caused so much ado. Back to Einstein again… Filed under: Media, News, Particle Physics, Physics Tagged: CERN, Neutrinos, OPERA
Dust is finally settling…
The situation about Yang-Mills theory is finally settling down. I do not mean that mathematicians’ community has finally decided the winner of the Millenium prize but rather that people working on the study of two-point functions on a pure Yang-Mills theory have finally a complete scenario for it. These studies have seen very hot debates [...]
Numerical evidence for the square root of a Wiener process
Brownian motion is a very kind mathematical object being very keen to numerical simulations. There are a plenty of them for any platform and software so that one is able to check very rapidly the proper working of a given hypothesis. For these aims, I have found very helpful the demonstration site by Wolfram and [...]
Quantum mechanics and stochastic processes: Revised paper posted
After having fixed the definition of the extended It? integral, I have posted a revised version of my paper on arXiv (see here). The idea has been described here. A full account of this story is given here. The interesting aspect from a physical standpoint is the space that is fluctuating both for a Wiener [...]
Evading Piau’s paradox
Disclaimer: This post is somewhat technical. Recently, I posted a paper on arXiv (see here) claiming that quantum mechanics is the square root of a Wiener process. In order to get my results I have to consider some exotic It? integrals that Didier Piau showed not existent (see here and here). In my argument I [...]
Quantum mechanics and the square root of Brownian motion
There is a very good reason why I was silent in the past days. The reason is that I was involved in one of the most difficult article to write down since I do research (and are more than twenty years now!). This paper arose during a very successful collaboration with two colleagues of mine: [...]
Nothingness in science: Lisi’s case
People working in science are well aware that severe criteria are generally used to scrutinize their work, work that must appear on reputable journals where a review by peers decides the goodness or the rejection. This is generally the start of a procedure that can last several years and that should end up with the [...]
A new year full of promises
We have left 2011 with a lot of exciting results from experiments. Neutrinos appear to move a bit faster than expected and Higgs provided some glimpses at CERN. Of course, this kind of Higgs appears somewhat boring at first being in the range of what Standard Model expected. But it is really too early to [...]
Glimpses of Higgs
Finally, after some frantic waiting filled with rumors, we heard the truth from people at CERN. And we discovered that rumors were just right. Evidence is mounting for a Higgs particle at around 120-130 GeV, after new data were accounted for. All these evidences point toward a Standard Model Higgs. But some caution words are [...]
Yang-Mills scenario: Yet a confirmation
While CERN is calming down rumors (see here), research activity on Yang-Mills theories keeps on going on. A few days ago, a paper by Axel Weber appeared on arxiv (see here). As my readers know, having discussed this at length, in these last years there has been a hot debate between the proponents of the [...]
CERN Scientific Policy Committee: Higgs search
It is now officially published the agenda of the meeting of the Scientific Policy Commitee of CERN (see here) on 12 December. On 13 December it is scheduled a seminar by ATLAS and CMS about Higgs search (see here) by the spokepersons of these experiments: Fabiola Gianotti and Guido Tonelli. As usual, you can follow [...]
Yang-Mills mass gap scenario: Further confirmations
Alexander (Sasha) Migdal was a former professor at Princeton University. But since 1996, he is acting as a CEO of a small company. You can read his story from that link. Instead, Marco Bochicchio was a former colleague student of mine at University of Rome “La Sapienza”. He was a couple of years ahead of [...]
QCD at finite temperature
The great news for me, in this week, has been the acceptance of my paper of QCD at finite temperature in Physical Review C (see here). This chance concreted after the excellent work of the referee that helped me to improve the paper in a significant way. For a good paper, such a way to [...]
Today great news!
A couple of fundamental great news, well one is just a rumor, is hitting scientific community today. Higgs search: At Paris Conference, Gigi Rolandi addresses his talk on combination for LHC and Tevatron. This picture has been waitd for a long time since the excellent work of Phil Gibbs at his blog (see here for [...]