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Life on the latticeThoughts on lattice QCD, particle physics and the world at large.
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Life on the lattice | latticeqcd.blogspot.com Reviews
https://latticeqcd.blogspot.com
Thoughts on lattice QCD, particle physics and the world at large.
Life on the lattice: Fermions on the lattice, part one of four
http://latticeqcd.blogspot.com/2004/11/fermions-on-lattice-part-one-of-four.html
Life on the lattice. Thoughts on lattice QCD, particle physics and the world at large. Thursday, November 18, 2004. Fermions on the lattice, part one of four. Fermion fields in quantum field theory are represented by anti-commuting numbers, known as Grassman numbers. This is fine when you're working with a pencil and paper, but it's impossible to put a Grassman number into a computer. Computers are good for reals, integers and complex numbers (really two reals), but they can't do Grassman numbers. Int D ...
Life on the lattice: Impressum
http://latticeqcd.blogspot.com/p/impressum.html
Life on the lattice. Thoughts on lattice QCD, particle physics and the world at large. Angaben nach §5 Telemediengesetz (TMG):. Dienstanschrift: Institut für Kernphysik, JGU Mainz, Becherweg 45, 55099 Mainz. Angaben nach §55 Rundfunkstaatsvertrag (RStV):. Verantwortlich für den Inhalt:. Georg von Hippel (Anschrift s.o.). Life on the Lattice ist ein kostenloses, nicht-gewerbliches Angebot im Interesse der internationalen Gemeinschaft der an Gitterfeldtheorie interessierten Wissenschaftler. Sobald uns Info...
Life on the lattice: Exactly chiral fermions
http://latticeqcd.blogspot.com/2006/02/exactly-chiral-fermions.html
Life on the lattice. Thoughts on lattice QCD, particle physics and the world at large. Thursday, February 02, 2006. In the last post in this series, we looked at the Ginsparg-Wilson relation. And how it might provide a way to get past the Nielsen-Ninomiya theorem. In this post we shall have a look at how this can happen in practice. Where the scalar field is assumed to be a step function of the same general form as. Can be understood as a domain wall of width. The case of interest has. And perform the sa...
Life on the lattice: Wilson Quarks
http://latticeqcd.blogspot.com/2004/11/wilson-quarks.html
Life on the lattice. Thoughts on lattice QCD, particle physics and the world at large. Monday, November 29, 2004. This is the second post about fermions on the lattice. In this post we're going look at how the 16 extra "tastes" of lattice fermions show up, and one way that we can correct for them. The nice thing about this calculation is we don't really need to worry about the gauge fields in all this. We'll work in the free quark case, everything will apply to the interacting case as well. Pbar 2 = sum ...
Life on the lattice: Twisted Mass Fermions
http://latticeqcd.blogspot.com/2006/03/twisted-mass-fermions.html
Life on the lattice. Thoughts on lattice QCD, particle physics and the world at large. Tuesday, March 28, 2006. Time for another post in our series about lattice fermions. So far we have talked about naive. In this post, we are going to take a look at a still fairly new approach to lattice fermions that is known under the name of twisted mass QCD. What one does in this approach is to take the Dirac operator for a flavour doublet of fermions and add to it a chirally twisted mass term. With the twisted mass.
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January | 2014 | Collider Blog
https://muon.wordpress.com/2014/01
Archive for January, 2014. Inclusive W and Z cross sections. Quark density on the basis of inclusive cross section measurements. I’ll return to this result in a future post. Are nearly as precise as the theoretical predictions, whose errors are dominated by the PDF uncertainties. We knew, back in 2011, that a new era of electroweak physics had begun. It is even more interesting to plot the W. Cross section against the W. Cross section, because the asymmetry between W. In a low pile-up configuration in or...
CMS resolves states with a mass difference of 19 MeV | Collider Blog
https://muon.wordpress.com/2014/09/27/cms-resolves-states-with-a-mass-difference-of-19-mev
CMS resolves states with a mass difference of 19 MeV. September 27, 2014 at 4:56 pm. This week the CMS Collaboration released a paper reporting the measurement of the ratio of production cross sections for the χb2(1P) and the χb1(1P) heavy meson states ( arXiv:1409.5761. The motivation stems from the theoretical difficulties in explaining how such states are formed, but for me as an experimenter the most striking feature of the analysis is the impressive separation of the χ states. The mass of the χb...
October | 2013 | Collider Blog
https://muon.wordpress.com/2013/10
Archive for October, 2013. Nice, short video on US contributions to CERN Science. I just heard about a youtube video written by Don Lincoln about the role the United States plays in CERN science – specifically, the LHC. You can view it here:. Apparently Ernie Monitz, the new Secretary of Energy, linked this to his facebook page: https:/ www.facebook.com/ErnestJMoniz/posts/222609781237091. October 19, 2013 at 3:23 pm. Blank on the Map. Life on the Lattice. Shores of the Dirac Sea. The CMS kinematic edge.
Random bits | Equilibrium Networks
https://blog.eqnets.com/2010/06/01/random-bits-83
Science, networks, and security. There’s been some buzz (see here. Over the deputy SECDEF’s comments last week:. The idea that deploying Einstein more widely is anything more than a step towards a government-sponsored security monoculture escapes me. There is no way that this will get any real traction because it’s not like the USG can credibly claim that its own networks are secure. If Einstein is free, then companies might use it. But that’s about as far as that goes. Feed You can leave a response.
Communications security | Equilibrium Networks
https://blog.eqnets.com/category/security/communications-security
Science, networks, and security. 8217;To check out the worm, you have to know the machines,’ said an American expert on nuclear intelligence. ‘The reason the worm has been effective is that the Israelis tried it out.’. MIRCON and network counteroffensives. I popped in for a couple of stretches at Mandiant’s MIRcon incident response conference. I recalled Mandiant’s model: they have a bunch of people constantly working on highly technical stuff in a field that changes rapidly this level of expertise...
Equilibrium Networks | Equilibrium Networks
https://blog.eqnets.com/category/equilibrium-networks
Science, networks, and security. Effective statistical physics of Anosov systems. We’ve just posted a paper titled “Effective statistical physics of Anosov systems”. That details the physical relevance of the techniques we’ve used to characterize network traffic. The idea is that there appears to be a unique well-defined effective temperature (and energy spectrum) for physical systems that are typical under the so-called chaotic hypothesis. Discounts including installation media for a nominal shipping an...
Random bits | Equilibrium Networks
https://blog.eqnets.com/category/random-bits
Science, networks, and security. 8217;To check out the worm, you have to know the machines,’ said an American expert on nuclear intelligence. ‘The reason the worm has been effective is that the Israelis tried it out.’. Galrahn has an interesting take. 8220;Welcome to the future of warfare, where simply planting doubt in the reliability of a system due to a cyberwarfare based malware payload infection is enough to achieve a mission kill against an enemy system.”. There’s been some buzz (see here. The idea...
Random bit | Equilibrium Networks
https://blog.eqnets.com/2011/01/17/random-bit-3
Science, networks, and security. 8217;To check out the worm, you have to know the machines,’ said an American expert on nuclear intelligence. ‘The reason the worm has been effective is that the Israelis tried it out.’. This entry was posted on Monday, January 17th, 2011 at 01:21 and is filed under Communications security. You can follow any responses to this entry through the RSS 2.0. Feed You can leave a response. From your own site. Laquo; Previous Post. 15 March 2013 at 11:14. As always, btw. The fund...
Harvard University is to change its name | Symmetry factor
https://apetrov.wordpress.com/2015/04/01/harvard-university-is-to-change-its-name
Life in physics and nearby. Harvard University is to change its name. April 1, 2015. Posted by apetrov in Uncategorized. A phrase from William Shakespeare’s. States: “What’s in a name? That which we call a rose By any other name would smell as sweet.” This cannot be any further from the truth in the corporate world. The name of a corporation is its face, so setting a brand requires a lot of work and money. But what happens when something goes wrong? The way to deal with corporate problems often involves.
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Life on the lattice
Life on the lattice. Thoughts on lattice QCD, particle physics and the world at large. Monday, January 29, 2018. Looking for guest blogger(s) to cover LATTICE 2018. By Georg v. Hippel. Thursday, June 29, 2017. Lattice 2017, Day Six. This was followed by a talk on the tetraquark candidate Z. 3900), HALQCD find it to be not a resonance, but a kinematic cusp, although this conclusion is based on simulations at rather heavy pion masses (m. I can appreciate how much work that is, and I think you should have r...
fermiqcd
The goal of this project is devlop a toolkit for computations and visualizations of Lattice Quantum Chromodynamics. LQCD) LQCD is an algorithmic formulation of QCD. The mathematical model that describes quarks. Quarks are the basic components of most of the known matter, including protons and neutrons. LQCD is based on complex numerical algorithms derived from a mathematical analogy between " Feynman paths. And "steps" in the Markov Chain Monte Carlo algorithm. And large computer clusters. In blue and an...
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