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  • April 14, 2017
  • 09:58 AM

Well below 1%

by Marco Frasca in The Gauge Connection

When a theory is too hard to solve people try to consider lower dimensional cases. This also happened for Yang-Mills theory. The four dimensional case is notoriously difficult to manage due to the large coupling and the three dimensional case has been treated both theoretically and by lattice computations. In this latter case, the ground […]... Read more »

Andreas Athenodorou, & Michael Teper. (2017) SU(N) gauge theories in 2 1 dimensions: glueball spectra and kstring tensions. J. High Energ. Phys., 15. arXiv: 1609.03873v1

Marco Frasca. (2015) Quantum Yang-Mills field theory. Eur. Phys. J. Plus (2017) 132: 38. arXiv: 1509.05292v2

  • May 24, 2016
  • 11:02 AM

Should Biologists be Guided by Beauty?

by Jalees Rehman in The Next Regeneration

One key characteristic of a beautiful scientific theory is the simplicity of the underlying concepts. According to Weinberg, Einstein's theory of gravitation is described in fourteen equations whereas Newton's theory can be expressed in three. Despite the appearance of greater complexity in Einstein's theory, Weinberg finds it more beautiful than Newton's theory because the Einsteinian approach rests on one elegant central principle – the equivalence of gravitation and ........ Read more »

Dietrich, M., Ankeny, R., & Chen, P. (2014) Publication Trends in Model Organism Research. Genetics, 198(3), 787-794. DOI: 10.1534/genetics.114.169714  

Weinberg, Steven. (1992) Dreams of a Final Theory . Vintage Books. info:/

  • March 14, 2015
  • 11:31 AM

Is Higgs alone?

by Marco Frasca in The Gauge Connection

I am back after the announcement by CERN of the restart of LHC. On May this year we will have also the first collisions. This is great news and we hope for the best and the best here is just the breaking of the Standard Model. The Higgs in the title is not Professor Higgs […]... Read more »

Marco Frasca. (2009) Exact solutions of classical scalar field equations. J.Nonlin.Math.Phys.18:291-297,2011. arXiv: 0907.4053v2

Marco Frasca. (2013) Scalar field theory in the strong self-interaction limit. Eur. Phys. J. C (2014) 74:2929. arXiv: 1306.6530v5

Marco Frasca. (2014) Exact solutions for classical Yang-Mills fields. arXiv. arXiv: 1409.2351v2

Biagio Lucini, & Marco Panero. (2012) SU(N) gauge theories at large N. Physics Reports 526 (2013) 93-163. arXiv: 1210.4997v2

  • March 3, 2015
  • 09:00 AM

Star Trek Phasers, Coming To Us Sooner or Laser

by Mark E. Lasbury in The 'Scope

Can we make a Star Trek phaser? In a classic example of life imitating art, the militaries of many countries are actively pursuing such directed energy weapons. So far, we’ve developed high-energy lasers and masers, particle beams, and something that looks a lot like an aimed lightning bolt. But our versions are huge, what must be overcome to make hand-held versions?... Read more »

Shao, L., Cline, D., Ding, X., Ho, Y., Kong, Q., Xu, J., Pogorelsky, I., Yakimenko, V., & Kusche, K. (2013) Simulation prediction and experiment setup of vacuum laser acceleration at Brookhaven National Lab-Accelerator Test Facility. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 25-29. DOI: 10.1016/j.nima.2012.09.053  

Bartal, T., Foord, M., Bellei, C., Key, M., Flippo, K., Gaillard, S., Offermann, D., Patel, P., Jarrott, L., Higginson, D.... (2011) Focusing of short-pulse high-intensity laser-accelerated proton beams. Nature Physics, 8(2), 139-142. DOI: 10.1038/nphys2153  

Oxborrow, M., Breeze, J., & Alford, N. (2012) Room-temperature solid-state maser. Nature, 488(7411), 353-356. DOI: 10.1038/nature11339  

Peralta, E., Soong, K., England, R., Colby, E., Wu, Z., Montazeri, B., McGuinness, C., McNeur, J., Leedle, K., Walz, D.... (2013) Demonstration of electron acceleration in a laser-driven dielectric microstructure. Nature, 503(7474), 91-94. DOI: 10.1038/nature12664  

  • February 17, 2015
  • 08:05 AM

I'll Beam Right Over

by Mark E. Lasbury in The 'Scope

Star Trek’s 50th anniversary is next year. Wouldn’t transporting a person to the ISS be a great way to celebrate? Well, there are a couple of problems to overcome, but we’re on our way. We have recently learned how to transport information and light from one place to another, without it ever existing anywhere in between! And this will help us make quantum computers that will be able to transport all the information contained in every atom of your body.... Read more »

Ma, X., Herbst, T., Scheidl, T., Wang, D., Kropatschek, S., Naylor, W., Wittmann, B., Mech, A., Kofler, J., Anisimova, E.... (2012) Quantum teleportation over 143 kilometres using active feed-forward. Nature, 489(7415), 269-273. DOI: 10.1038/nature11472  

Yokoyama, S., Ukai, R., Armstrong, S., Sornphiphatphong, C., Kaji, T., Suzuki, S., Yoshikawa, J., Yonezawa, H., Menicucci, N., & Furusawa, A. (2013) Ultra-large-scale continuous-variable cluster states multiplexed in the time domain. Nature Photonics, 7(12), 982-986. DOI: 10.1038/nphoton.2013.287  

  • October 6, 2014
  • 05:13 AM

Not-So-Green Men

by Viputheshwar Sitaraman in Draw Science

The Webb Telescope searches for alien life on exoplanets by analyzing CFC pollution from potentially advanced civilizations. [Infographic]... Read more »

  • July 21, 2014
  • 03:31 PM

Do quarks grant confinement?

by Marco Frasca in The Gauge Connection

In 2010 I went to Ghent in Belgium for a very nice Conference on QCD. My contribution was accepted and I had the chance to describe my view about this matter. The result was this contribution to the proceedings. The content of this paper was really revolutionary at that time as my view about Yang-Mills […]... Read more »

Marco Frasca. (2010) Mapping theorem and Green functions in Yang-Mills theory. PoS FacesQCD:039,2010. arXiv: 1011.3643v3

Markus Hopfer, Christian S. Fischer, & Reinhard Alkofer. (2014) Running coupling in the conformal window of large-Nf QCD. arXiv. arXiv: 1405.7031v1

Markus Hopfer, Christian S. Fischer, & Reinhard Alkofer. (2014) Infrared behaviour of propagators and running coupling in the conformal window of QCD. arXiv. arXiv: 1405.7340v1

  • June 10, 2014
  • 05:28 PM

Study Looks at Long-Term Stability of Spent Nuclear Fuel

by dailyfusion in The Daily Fusion

A study co-authored by the Joint Research Center (JRC), the EU in-house scientific service, has examined the evolution of components of spent nuclear fuel by comparing actual spent fuel with lab results obtained on fuel analogues in simulated, accelerated timescale.... Read more »

Wiss, T., Hiernaut, J., Roudil, D., Colle, J., Maugeri, E., Talip, Z., Janssen, A., Rondinella, V., Konings, R., Matzke, H.... (2014) Evolution of spent nuclear fuel in dry storage conditions for millennia and beyond. Journal of Nuclear Materials, 451(1-3), 198-206. DOI: 10.1016/j.jnucmat.2014.03.055  

  • May 1, 2014
  • 11:24 AM

Antineutrinos May Help Monitor Nuclear Reactors

by dailyfusion in The Daily Fusion

When monitoring nuclear reactors, the International Atomic Energy Agency (IAEA) has to rely on input given by the operators. In the future, antineutrino detectors may provide an additional option for monitoring.... Read more »

Haag, N., Gütlein, A., Hofmann, M., Oberauer, L., Potzel, W., Schreckenbach, K., & Wagner, F. (2014) Experimental Determination of the Antineutrino Spectrum of the Fission Products of U238. Physical Review Letters, 112(12). DOI: 10.1103/PhysRevLett.112.122501  

  • March 25, 2014
  • 11:24 AM

Spent Nuclear Fuel Could Be Used as Energy Source

by dailyfusion in The Daily Fusion

Lawrence Livermore scientists have modeled actinide-based alloys, such as spent nuclear fuel (SNF), in an effort to predict the impact of evolving fuel chemistry on material performance.... Read more »

  • March 24, 2014
  • 10:01 AM

New Magnetic Mechanism Could Advance Fusion Power

by dailyfusion in The Daily Fusion

A team of researchers from the University of Michigan and Princeton has uncovered a new kind of magnetic mechanism that could help make nuclear fusion reactions easier to start.... Read more »

  • February 22, 2014
  • 12:55 PM

Nailing down the Yang-Mills problem

by Marco Frasca in The Gauge Connection

Millennium problems represent a major challenge for physicists and mathematicians. So far, the only one that has been solved was the Poincaré conjecture (now a theorem) by Grisha Perelman. For people working in strong interactions and quantum chromodynamics, the most interesting of such problems is the Yang-Mills mass gap and existence problem. The solutions of […]... Read more »

Axel Weber. (2012) Epsilon expansion for infrared Yang-Mills theory in Landau gauge. Phys. Rev. D , 125005. arXiv: 1112.1157v2

Marco Frasca. (2007) Infrared Gluon and Ghost Propagators. Phys.Lett.B670:73-77,2008. arXiv: 0709.2042v6

Marco Frasca. (2009) Mapping a Massless Scalar Field Theory on a Yang-Mills Theory: Classical Case. Mod. Phys. Lett. A 24, 2425-2432 (2009). arXiv: 0903.2357v4

Marco Frasca. (2010) Mapping theorem and Green functions in Yang-Mills theory. PoS FacesQCD:039,2010. arXiv: 1011.3643v3

  • February 18, 2014
  • 05:50 PM

NIF Experiment Achieves Fusion Fuel Gain Exceeding Unity

by dailyfusion in The Daily Fusion

Ignition—the process of releasing fusion energy equal to or greater than the amount of energy used to confine the fuel—has long been considered the “holy grail” of inertial confinement fusion science.... Read more »

O.A. Hurricane, D.A. Callahan, D. T. Casey, P.M. Celliers, C. Cerjan, E.L. Dewald, T.R. Dittrich, T. Döppner, D.E. Hinkel, L.F. Berzak Hopkins, J.L. Kline, S. Le Pape, T. Ma, A.G. MacPhee, J.L. Milovich, A. Pak, H.-S. Park, P.K. Patel, B.A. Remingt. (2014) Fuel gain exceeding unity in an inertially confined fusion implosion. Nature. DOI: 10.1038/nature13008  

  • February 10, 2014
  • 08:59 AM

2013 Update of the discovery of nuclides

by Paul Stevenson in Blog of the Isotopes

I noticed on the arXiv server this morning that a preprint has appeared with the 2013 update of the project, run by Michael Thoennessen of MSU, documenting the experimental discover of nuclides. Nuclides are the nuclear equivalent of chemical elements - the basic units of matter.  Each element is characterised by the number of protons in the nucleus (or equivalently by the number of electrons orbiting a neutral atom of the element).  They run from element #1 - Hydrogen, with one p........ Read more »

M. Thoennessen. (2014) 2013 Update of the discoveries of nuclides. arXiv. arXiv: 1402.1663v1

  • February 3, 2014
  • 12:59 PM

New Safeguards Tool for Plutonium Analysis Proposed

by dailyfusion in The Daily Fusion

A promising new safeguards tool for plutonium analysis has been developed by the Radiation and Nuclear Safety Authority of Finland (STUK) and the Joint Research Center (JRC), the EU in-house scientific service.... Read more »

K. Peräjärvi, J. Turunen, S. Ihantola, V. Kämäräinen, S. Pommé, R. Pöllänen, T. Siiskonen, H. Sipilä, H. Toivonen. (2014) Feasibility of conversion electron spectrometry using a Peltier-cooled silicon drift detector. Journal of Radioanalytical and Nuclear Chemistry , 1(299), 229-234. DOI: 10.1007/s10967-013-2788-0  

  • January 11, 2014
  • 02:55 PM

Helmholtz Coil May Help Lessen Fusion Instabilities

by dailyfusion in The Daily Fusion

A surprising effect created by a 19th century device called a Helmholtz coil offers clues about how to achieve controlled nuclear fusion at Sandia National Laboratories’ powerful Z machine.... Read more »

T.J. Awe, R.D. McBride, C.A. Jennings, D.C. Lamppa, M.R. Martin, D.C. Rovang, S.A. Slutz, M.E. Cuneo, A.C. Owen, D.B. Sinars, K. Tomlinson, M.R. Gomez, S.B. Hansen, M.C. Herrmann, J.L. McKenney1, C. Nakhleh, G.K. Robertson1, G.A. Rochau, M.E. Savage, D.G. (2013) Observations of Modified Three-Dimensional Instability Structure for Imploding z-Pinch Liners that are Premagnetized with an Axial Field. Physical Review Letters, 111(23). DOI: 10.1103/PhysRevLett.111.235005  

  • June 15, 2013
  • 05:10 PM

Return in Paris

by Marco Frasca in The Gauge Connection

After two years since the last edition, I was back in Paris to participate to the Twelfth Workshop on Non-perturbative Quantum Chromodynamics. The conference is organized by high-energy group at Brown University and held at Institut d’Astrophysique de Paris. Professor Chung-I Tan and Professor Berndt Mueller from Duke University are the organizers. As it also happened in the precedent edition, […]... Read more »

Marco Frasca. (2011) Chiral symmetry in the low-energy limit of QCD at finite temperature. Phys. Rev. C 84, 055208 (2011). arXiv: 1105.5274v4

D. Gomez Dumm, & N. N. Scoccola. (2004) Characteristics of the chiral phase transition in nonlocal quark models. Phys.Rev. C72 (2005) 014909. arXiv: hep-ph/0410262v2

M. Ruggieri, F. Scardina, S. Plumari, & V. Greco. (2013) Elliptic Flow from Nonequilibrium Color Glass Condensate Initial Conditions. arXiv. arXiv: 1303.3178v1

David Dudal, John Gracey, Silvio Paolo Sorella, Nele Vandersickel, & Henri Verschelde. (2008) A refinement of the Gribov-Zwanziger approach in the Landau gauge: infrared propagators in harmony with the lattice results. Phys.Rev.D78:065047,2008. arXiv: 0806.4348v2

Lieb, E., & Simon, B. (1973) Thomas-Fermi Theory Revisited. Physical Review Letters, 31(11), 681-683. DOI: 10.1103/PhysRevLett.31.681  

Marco Frasca. (2006) Thermodynamic Limit and Decoherence: Rigorous Results. Journal of Physics: Conference Series 67 (2007) 012026. arXiv: quant-ph/0611024v1

  • March 26, 2013
  • 10:00 AM

Ceramic Coating Will Stop Tritium Permeation in Fusion Reactors

by dailyfusion in The Daily Fusion

Tritium, which is used in fusion reactors, is a radioactive isotope of hydrogen, and as such is shares the same chemical properties. Like hydrogen, it can easily permeate a large number of materials. In a colloquium delivered at JET (Joint European Torus) last week, Assistant Professor Takumi Chikada from the University of Tokyo outlined progress in research of ceramic coating that could contain tritium and protect tritium-carrying pipework.... Read more »

Chikada, T., Suzuki, A., Kobayashi, T., Maier, H., Terai, T., & Muroga, T. (2011) Microstructure change and deuterium permeation behavior of erbium oxide coating. Journal of Nuclear Materials, 417(1-3), 1241-1244. DOI: 10.1016/j.jnucmat.2010.12.283  

  • December 19, 2012
  • 07:00 PM

what alcohol can tell us about the fate of the universe

by Greg Fish in weird things

Once upon a time, we looked at an explanation for dark matter involving a theory about how all matter around us could decay over 6.6 × 10^33 years and noted that there’s a controversy as to whether protons actually decay. To help settle this, astronomers took advantage of the fact that telescopes are relativistic time machines, and peered through them at a galaxy known as PKS 1830-211 — a name only a scientist could love — that just so happens to be a gravitational lens a........ Read more »

  • November 12, 2012
  • 06:29 AM

Kyoto, arXiv and all that

by Marco Frasca in The Gauge Connection

Today, Kyoto conference HCP2012 has started. There is already an important news from LHCb that proves for the first time the existence of the decay . They find close agreement with the Standard Model (see here). Another point scored by this model and waiting for new physics yet. You can find the program with all [...]... Read more »

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