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Topic: Instanton


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In the News (Sat 25 May 13)

  
  Instanton - Wikipedia, the free encyclopedia
In mathematical physics, an instanton is a special kind of solution to the equations of motion of a classical field theory on a Euclidean spacetime.
In quantum field theory, an instanton is a topologically nontrivial field configuration in four-dimensional Euclidean space (considered as the Wick rotation of Minkowski spacetime).
Instanton effects are important in solving the so-called 'eta-problem' in quantum chromodynamics.
en.wikipedia.org /wiki/Instanton   (730 words)

  
 Instantons in QCD: Theory and Application of the Instanton Liquid Model (Marcus Hutter)
A gauge invariant quark propagator is calculated in the one instanton background and is compared to the regular and singular propagator.
In general the instanton liquid model exhibits an astonishing internal consistency and a good agreement with the experimental data.
In the path integral representation of QCD the partition function is, hence, dominated by an ensemble of extended particles (instantons) in 4 dimensions at temperature g^2.
www.idsia.ch /~marcus/physics/pdise.htm   (1286 words)

  
 Eigenmodes Project: Plots for single instanton configuration
For the single instanton configuration, one instanton is put in the middle of a 8^3 x 16 lattice by hand.
Instanton page 2 shows plots for the same configuration with periodic boundary conditions in every direction.
This eigenvector is clearly correlated to the instanton on the action density plot.
astro.uni-tuebingen.de /~djkuster/phi/instmodes_eng.htm   (226 words)

  
 [No title]   (Site not responding. Last check: 2007-10-20)
InterVideo InstantON is unique in that it provides instant, CE-like access to a full range of viewing, listening and recording options plus remote control support for a distance of up to 10 feet.
InterVideo InstantON is a new software solution that leverages the reliability and power of InterVideo LinDVD®, the playback/navigation software selected by companies such as SONY, Pioneer and others for their high-end CE devices.
With InterVideo InstantON's dual-boot configuration, users can move into the Windows® mode (which requires the full Windows load time) when they want to use the PC to access their work-related files.
www.intervideo.com /jsp/Press.jsp?mode=01-09-2004   (929 words)

  
 Instantons
Instantons would be, in a way, the best candidates for being responsible for confinement.
Wilson loops immersed in the instanton gas present in the ground state could be sufficiently disordered to follow the area law.
In turn, the effect of the instanton gas on confinement is very strongly dependent on this density function.
www.physics.uc.edu /suranyi/conf-lectures/node25.html   (436 words)

  
 Talk:Instanton - Wikipedia, the free encyclopedia
Very nice, but the article doesn't actually say what an instanton is. Anyone with enough knowledge of theoretical physics want to take a crack at putting some text in this article?
I am a mathematician trying to understand what this article means mathematically, but am limited by the deluge of physics jargon starting from the very beginning of this article.
The relation to Yang-Mills gauge theory in Minkowski space should be clarified in a subsection.
en.wikipedia.org /wiki/Talk:Instanton   (249 words)

  
 Professor Stephen Hawking
The action of the instanton itself is negative, but the effect of perturbations around the instanton, is to increase the action, that is, to make the action less negative.
However, a larger instanton, means starting at the north pole, with a lower value of the scalar potential, V. If the form of V is given, this in turn means a shorter period of inflation.
The a-priori probability from the no boundary proposal wants to make the instantons large, and probabi lity of the formation of galaxies, which requires that both omega, and the amplitude of the fluctuations, not be too small.
www.hawking.org.uk /lectures/quantum.html   (4524 words)

  
 InterVideo Announces InstantON Availability - Computing News - Designtechnica
InterVideo InstantON's dual-boot configuration, which is being incorporated into systems from Fujitsu, Sharp and others, allows a single PC to be used for both computing tasks and entertainment.
InterVideo InstantON incorporates the reliability and power of InterVideo WinDVD®, and LinDVD™ the playback/navigation software selected by industry leaders for their PCs and high-end CE devices.
InterVideo InstantON is currently available from InterVideo only to OEMs for evaluation and integration and is not sold as stand-alone retail software.
news.designtechnica.com /news_printerfriendly3657.html   (790 words)

  
 Quantum Cosmology
Instantons don't exist for all choices of boundary three geometry; however those three geometries that do admit the existence of instantons are more probable than those that don't.
The idea behind the Coleman-De Luccia instanton, discovered in 1987, is that the matter in the early universe is initially in a state known as a false vacuum.
Since different types of instantons predict slightly different fluctuation spectra, the temperature perturbations in the cosmic microwave background radiation will depend on the instanton from which the universe was created.
www.damtp.cam.ac.uk /user/gr/public/qg_qc.html   (1988 words)

  
 Citebase - Instanton in the nonperturbative QCD vacuum   (Site not responding. Last check: 2007-10-20)
Effective action for instanton is derived in bilocal approximation and it is demonstrated that stochastic background gluon fields are responsible for IR stabilization of instantons.
Nonperturbative vacuum is described in terms of nonlocal gauge invariant vacuum averages of gluon field strength.Effective action for instanton is derived in bilocal approximation and it is demonstrated tha...
Effective action for instanton is derived in bilocal approximation and it is demonstrated th...
www.citebase.org /cgi-bin/citations?id=oai:arXiv.org:hep-ph/0111305   (833 words)

  
 Professor Stephen Hawking
If the instanton were a perfectly round four sphere, b would be a sine function of sigma.
The non constant scalar field, will cause the instanton not to be a perfectly round four sphere, and in fact there will be a singularity at the south pole.
According to the no boundary proposal, the relative probability of such a closed universe, is e to minus twice the action of the part of the pea instanton, between the north pole, and the equator.
www.hawking.org.uk /lectures/inflate.html   (5491 words)

  
 LinuxElectrons - InterVideo InstantON PcE Software Bundled with AOpen's New XC Cube AV Edition   (Site not responding. Last check: 2007-10-20)
By including InterVideo InstantON with the stylish-looking XC Cube AV, AOpen gives resellers, distributors and system integrators a versatile solution for configuring PCs that can be used for both computing tasks and home entertainment.
InterVideo InstantON clearly sets the XC Cube AV apart from other barebones PCs that usually only include a case, motherboard, and a power supply.
Designed with a dual-boot configuration, InstantON lets AOpen XC Cube AV users easily move from the instant access, CE-like multimedia applications, to the Windows PC mode (which requires the full Windows load time and standard keyboard/mouse control), with a single click of the remote.
www.linuxelectrons.com /article.php?story=20040511070340994   (805 words)

  
 New Scientist Premium- The word: Instanton - Books
Blame it on the fact that the vacuum is permeated by a gluon field, which is the glue that binds quarks - the fundamental units of matter - into protons and neutrons.
These four-dimensional vortices are distant relatives of wormholes, the space-time "tunnels" that could act as short cuts through the universe.
Instantons create the distorted vacuum-scape that quarks have to navigate.
www.newscientist.com /channel/fundamentals/mg18725112.300   (280 words)

  
 [No title]
InterVideo InstantON is a modular solution that brings the benefits of consumer electronic (CE) devices to a PC, turning it into a cost-effective home entertainment center with an access time of about 10 seconds and remote control.
The current version of InstantON supports playback of MP3-CDs with rich surround sound; playback of DVD-Video, VCD, and SVCD videos with outstanding clarity; plus TV viewing and recording capabilities that consumers can enjoy from the comfort of their living room couch.
InstantON can also be used for time-shifting capabilities that allow users to pause and replay live TV and record favorite shows for later viewing.
www.emedialive.com /Articles/PrintArticle.aspx?ArticleID=8415   (309 words)

  
 Bu Site Satiliktir colourface@gmail.com - InterVideo Unleashes New Era in Home PC/CE Convergence with Launch of ...   (Site not responding. Last check: 2007-10-20)
InterVideo InstantON is a new software solution that leverages the reliability and power of InterVideo LinDVD(R), the playback/navigation software selected by companies such as SONY, Pioneer and others for their high-end CE devices.
With InterVideo InstantON's dual-boot configuration, users can move into the Windows(R) mode (which requires the full Windows load time) when they want to use the PC to access their work-related files.
Availability InterVideo InstantON is currently available from InterVideo only to OEMs for evaluation and integration and is not sold as stand-alone retail software.
thenoisereport.com /article-print-36.html</font></...   (831 words)

  
 Citebase - Instanton Contribution to Polarized and Unpolarized Gluon Distribution in Nucleon   (Site not responding. Last check: 2007-10-20)
Instanton Contribution to Polarized and Unpolarized Gluon Distribution in Nucleon
Authors: Kochelev, N. The contribution of the anomalous quark-gluon interaction induced by instantons to the polarized and unpolarized gluon distributions in nucleon is estimated.
After introducing instantons and their physical meaning, I show that the number of instantons in the vacuum fluctuates in accordance with the QCD trace anomaly.
www.citebase.org /cgi-bin/citations?id=oai:arXiv.org:hep-ph/9707418   (1064 words)

  
 Instanton Corp. - Powering Digital Asset Exchange   (Site not responding. Last check: 2007-10-20)
Founded in 1996 in Austin, Texas, Instanton provides a new breed of comprehensive digital asset delivery solutions.
Instanton’s digital delivery, integration, and automation capabilities enable our customers to significantly reduce labor, operating, and infrastructure costs while accelerating their ability to generate revenues through swift, reliable delivery of their digital assets to internal business groups, partners, and customers.
Whether you are distributing software to your customers or exchanging business-critical information with your partners or employees, Instanton provides a business ready solution designed to power and bring efficiency to your organization’s digital exchange and distribution strategy.
www.instanton.com /company.html   (132 words)

  
 Hitachi PCs Including InterVideo InstantON - Computing News - Designtechnica
With InterVideo's InstantON dual-boot configuration, the Hitachi Prius PCs can be used for both Windows PC-based computing tasks and CE entertainment.
InstantON also provides TV viewing that users can enjoy from the comfort of their living room couch.
Hitachi J Series Prius Deck and Prius Air notebooks with InterVideo InstantON technology, WinDVD and WinDVD Creator 2 can be purchased through the company's retail and reseller channels or at the Hitachi online store at http://www.intervideo.com/jsp/www.hitachi.co.jp.
news.designtechnica.com /article3991.html   (389 words)

  
 Business Wire: InterVideo InstantON Technology Integrated with LG Electronics Express Series Notebooks
The LM 60/70 Express notebooks are designed with an impressive glare-type color-rich 15.4" LCD wide screen for the LW60 and a 17" LCD screen for the LW70 model that gives consumers a simultaneous dual-window display for a multimedia entertainment with ATI(R) Mobility Radeon(TM) X600 Graphics and the new High Definition Audio (Azalia) technology.
LW Express Series Notebooks with InstantON technology is now available and is shipping in more than thirty countries worldwide.
InterVideo is a registered trademark and InstantON is a trademark of InterVideo, Inc. All other trademarks are the property of their respective holders.
www.findarticles.com /p/articles/mi_m0EIN/is_2005_March_7/ai_n11851129   (768 words)

  
 InterVideo announces new PVR/HTPC software for consumer electronics @ CHAITGEAR
InterVideo InstantON is a modular solution that brings the benefits of a consumer electronic (CE) device to a PC, turning it into a cost-effective home entertainment center.
With the new PVR tools that have been added, InstantON can also be used for time-shifting capabilities that allow users to pause and replay live TV and record favorite shows for later viewing.
InterVideo InstantON’s dual-boot configuration allows a single PC to be used for both computing tasks and entertainment.
www.chait.net /index.php?p=67   (920 words)

  
 Instanton--Anti-Instanton Pair Induced Contributions to (ResearchIndex)   (Site not responding. Last check: 2007-10-20)
Abstract: The instanton--anti-instanton pair induced asymptotics of perturbation theory expansion for the cross section of electron--positron pair annihilation to hadrons and hadronic width of ø-lepton was found.
For N f = N c the nonperturbative instanton contribution is finite and may be calculated without phenomenological input.
The instanton induced peturbative asymptotics was shown to be enhanced as (n + 10)!
citeseer.ist.psu.edu /119155.html   (278 words)

  
 New Scientist Breaking News - Multimedia PC with instant start-up launches
Rather than sitting on a hard drive, LinDVD is small enough to be held in a read-only memory chip and boots in 10 seconds flat.
InterVideo developed the InstantOn technology in collaboration with Intel, IBM and Sony.
The InstantOn PC represents a direct challenge to Microsoft's Windows XP Media Center, a version of XP that lets a PC run entertainment and office programs at the same time.
www.newscientist.com /article.ns?id=dn4567   (642 words)

  
 Citebase - Instanton and QCD-monopole Trajectory in the Abelian Dominating System   (Site not responding. Last check: 2007-10-20)
Authors: Suganuma, H. Itakura, K. Toki, H. Correlation between instantons and QCD-monopoles is studied in the abelian-gauge-fixed QCD.
The solution to the Maximal Abelian projection is found to be a circular monopole trajectory with radius R centered on the instanton.
As an example we consider the case of one instanton and the case of a set of instantons arranged along a straight line.
www.citebase.org /cgi-bin/citations?id=oai:arXiv.org:hep-th/9512141   (1272 words)

  
 Citebase - Instanton-driven Gluon Saturation   (Site not responding. Last check: 2007-10-20)
The explicitly known instanton gauge field serves as a concrete realization of an underlying non-perturbative saturation mechanism associated with strong classical fields.
The conspicuous, intrinsic instanton size scale known from lattice simulations, turns out to determine the saturation scale.
The aim of this review is to demonstrate that there exists a coherent picture of strong interactions, based on instantons.
citebase.eprints.org /cgi-bin/citations?id=oai:arXiv.org:hep-ph/0407146   (640 words)

  
 [No title]
The instanton number of the solution corresponding to the pair $(n_+,n_-)$ is $k=(n_-^2-n_+^2)/8$, as explained in [SS1,ASSS].
They are the flat potential (gauge equivalent to the vacuum) with the zeroth Fourier coefficient $A_0=-1$ and all other coefficients zero, the round BPST instanton with $A_0=A_1=A_{-1}=1$ and all other coefficients zero, and the round BPST anti-instanton with $A_0=1$, $A_1=A_{-1}=-1$ and all other coefficients zero.
It is a possibility that some non-self-dual solutions admit a similar interpretation, as a superposition of instantons and anti-instantons.
www.ma.utexas.edu /mp_arc/html/papers/91-19   (6261 words)

  
 Exotic Instanton Effects | Musings
So there are situations where, presumably, you need to represent the instanton-induced deformation of the classical moduli space by an exotic superpotential of the form (3), instead of the more transparent (4).
Beasley and Witten lay out a couple of instances where they argue that’s the case, and show how you can calculate a superpotential of the form (3), induced by worldsheet instantons in heterotic string theory.
What’s quite interesting is that some of their heterotic computations are closely related to the higher-genus worldsheet instanton computations in the topological A-model.
golem.ph.utexas.edu /~distler/blog/archives/000694.html   (821 words)

  
 Colour figures for hep-lat...   (Site not responding. Last check: 2007-10-20)
An instanton model is fitted to eigenmodes and topological charge density and the sizes and positions of these are compared.
Note the very strong correlation with the instanton on the action density.
The eigenmode has a wall like shape and is not correlated with the instanton.
www.physics.adelaide.edu.au /cssm/lattice/eigenmodes   (375 words)

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