81 posts · 48,659 views
I discuss most recent findings in the area of QCD and strong interactions in the low-energy limit. This involves lattice computations of the spectrum, the problem of the mass gap and existence of Yang-Mills theory.
Marco Frasca
81 posts
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- June 15, 2013
- 04:10 PM
- 56 views
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
Ollitrault, J. (1992) Anisotropy as a signature of transverse collective flow. Physical Review D, 46(1), 229-245. DOI: 10.1103/PhysRevD.46.229
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
Lieb, E., & Simon, B. (1977) The Thomas-Fermi theory of atoms, molecules and solids. Advances in Mathematics, 23(1), 22-116. DOI: 10.1016/0001-8708(77)90108-6
Marco Frasca. (2006) Thermodynamic Limit and Decoherence: Rigorous Results. Journal of Physics: Conference Series 67 (2007) 012026. arXiv: quant-ph/0611024v1
- May 25, 2013
- 12:33 PM
- 63 views
Intrinsic decoherence observed again!
by Marco Frasca in The Gauge Connection
Decoherence is the effect that causes a quantum system to behave classically. The most known of this kind of effects is due to environment where the interaction of an open quantum system with its surrounding is the reason for the loss of quantum coherence. This effect is well-proven on an experimental ground and must be considered […]... Read more »
Bryce Gadway, Jeremy Reeves, Ludwig Krinner, & Dominik Schneble. (2012) Evidence for a Quantum-to-Classical Transition in a Pair of Coupled Quantum Rotors. Phys. Rev. Lett. 110, 190401 (2013). arXiv: 1203.3177v2
Adachi, S., Toda, M., & Ikeda, K. (1988) Quantum-Classical Correspondence in Many-Dimensional Quantum Chaos. Physical Review Letters, 61(6), 659-661. DOI: 10.1103/PhysRevLett.61.659
- May 17, 2013
- 06:48 AM
- 112 views
CMS harbors new physics beyond the Standard Model
by Marco Frasca in The Gauge Connection
In these days is ongoing LHCP 2013 (First Large Hadron Collider Physics Conference) and CMS data seem to point significantly toward new physics. Their measurements on the production modes for WW and ZZ are agreeing with my recent computations (see here) and overall are deviating slightly from Standard Model expectations giving Note that Standard Model is alive and […]... Read more »
Marco Frasca. (2013) Revisiting the Higgs sector of the Standard Model. arXiv. arXiv: 1303.3158v1
Marco Frasca. (2010) Mass generation and supersymmetry. arXiv. arXiv: 1007.5275v2
T. G. Steele, & Zhi-Wei Wang. (2013) Is Radiative Electroweak Symmetry Breaking Consistent with a 125 GeV Higgs Mass?. Physical Review Letters, 151601. arXiv: 1209.5416v3
Krzysztof A. Meissner, & Hermann Nicolai. (2006) Conformal Symmetry and the Standard Model. Phys.Lett.B648:312-317,2007. arXiv: hep-th/0612165v4
- April 26, 2013
- 05:27 AM
- 120 views
Tartaglia-Pascal triangle and quantum mechanics
by Marco Frasca in The Gauge Connection
The paper I wrote with Alfonso Farina and Matteo Sedehi about the link between the Tartaglia-Pascal triangle and quantum mechanics is now online (see here). This paper contains as a statement my theorem that provides a connection between the square root of a Wiener process and the Schrödinger equation that arose a lot of interest [...]... Read more »
Farina, A., Frasca, M., & Sedehi, M. (2013) Solving Schrödinger equation via Tartaglia/Pascal triangle: a possible link between stochastic processing and quantum mechanics. Signal, Image and Video Processing. DOI: 10.1007/s11760-013-0473-y
Marco Frasca. (2012) Quantum mechanics is the square root of a stochastic process. arXiv. arXiv: 1201.5091v2
Farina, A., Giompapa, S., Graziano, A., Liburdi, A., Ravanelli, M., & Zirilli, F. (2011) Tartaglia-Pascal’s triangle: a historical perspective with applications. Signal, Image and Video Processing, 7(1), 173-188. DOI: 10.1007/s11760-011-0228-6
- April 12, 2013
- 07:13 AM
- 94 views
Conformal Standard Model is consistent with the observed Higgs particle
by Marco Frasca in The Gauge Connection
Robert Garisto is an Editor of Physical Review Letters, the flagship journal of American Physical Society and the one with the highest impact factor in physics. I follow him on twitter (@RobertGaristo) and he points out interesting papers that appear in the journal he works in. This time I read the following and turned immediately [...]... Read more »
Steele, T., & Wang, Z. (2013) Is Radiative Electroweak Symmetry Breaking Consistent with a 125 GeV Higgs Mass?. Physical Review Letters, 110(15). DOI: 10.1103/PhysRevLett.110.151601
Marco Frasca. (2013) Revisiting the Higgs sector of the Standard Model. arXiv. arXiv: 1303.3158v1
- March 18, 2013
- 06:28 AM
- 121 views
Much closer to the Standard Model
by Marco Frasca in The Gauge Connection
Today, the daily from arxiv yields a contribution from John Ellis and Tevong You analyzing new data presented at Aspen and Moriond the last two weeks by CMS and ATLAS about Higgs particle (see here). Their result can be summarized in the following figure that is really impressive. This means that the updated data coming [...]... Read more »
John Ellis, & Tevong You. (2013) Updated Global Analysis of Higgs Couplings. arXiv. arXiv: 1303.3879v1
- March 14, 2013
- 06:40 AM
- 186 views
A Higgs particle but which one?
by Marco Frasca in The Gauge Connection
After Moriond conference last week, and while Moriond QCD and Aspen conferences are running yet, an important conclusion can be drawn and it is the one given in this CERN press release. The particle announced on 4th July last year is for certain a Higgs particle as it has spin 0, positive parity and couples [...]... Read more »
Marco Frasca. (2013) Revisiting the Higgs sector of the Standard Model. arXiv. arXiv: 1303.3158v1
Marco Frasca. (2009) Exact solutions of classical scalar field equations. J.Nonlin.Math.Phys.18:291-297,2011. arXiv: 0907.4053v2
- February 28, 2013
- 04:34 AM
- 241 views
Fooling with mathematicians
by Marco Frasca in The Gauge Connection
I am still working with stochastic processes and, as my readers know, I have proposed a new view of quantum mechanics assuming that at the square root of a Wiener process can be attached a meaning (see here and here). I was able to generate it through a numerical code. A square root of a [...]... Read more »
Marco Frasca. (2012) Quantum mechanics is the square root of a stochastic process. arXiv. arXiv: 1201.5091v2
- December 16, 2012
- 06:14 AM
- 197 views
Where does mass come from?
by Marco Frasca in The Gauge Connection
After CERN’s updates (well recounted here and here) producing no real news but just some concern about possible Higgs cloning, I would like to discuss here some mathematical facts about what one should expect about mass generation and why we should not be happy with these results, now coming out on a quarterly basis. The [...]... Read more »
M. Beneke, & P. Moch. (2012) On "dynamical mass" generation in Euclidean de Sitter space. arXiv. arXiv: 1212.3058v1
Marco Frasca. (2009) Exact solutions of classical scalar field equations. J.Nonlin.Math.Phys.18:291-297,2011. arXiv: 0907.4053v2
- November 20, 2012
- 05:34 AM
- 341 views
A first paper on square root of a Brownian motion and quantum mechanics gets published!
by Marco Frasca in The Gauge Connection
Following my series of posts on the link between the square root of a stochastic process and quantum mechanics (see here, here, here, here, here), that I proved to exist both theoretically and experimentally, I am pleased to let you know that the first paper of my collaboration with Alfonso Farina and Matteo Sedehi was [...]... Read more »
Marco Frasca. (2012) Quantum mechanics is the square root of a stochastic process. arXiv. arXiv: 1201.5091v2
Farina, A., Giompapa, S., Graziano, A., Liburdi, A., Ravanelli, M., & Zirilli, F. (2011) Tartaglia-Pascal’s triangle: a historical perspective with applications. Signal, Image and Video Processing. DOI: 10.1007/s11760-011-0228-6
- November 12, 2012
- 05:29 AM
- 181 views
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 »
Sidney Coleman. (2011) Notes from Sidney Coleman's Physics 253a. arXiv. arXiv: 1110.5013v4
Axel Weber. (2012) The infrared fixed point of Landau gauge Yang-Mills theory. arXiv. arXiv: 1211.1473v1
- November 7, 2012
- 03:57 AM
- 206 views
Breaking of a symmetry: A paper
by Marco Frasca in The Gauge Connection
I have uploaded a paper on arXiv (see here), following my preceding post, where I show that supersymmetry has inside itself the seeds for the breaking. I consider a Wess-Zumino model without masses (chiral) and I prove that, at lower momenta, it boils down to a Nambu-Jona-Lasinio model so, breaking supersymmetry through a gap equation [...]... Read more »
Marco Frasca. (2012) Chiral Wess-Zumino model and breaking of supersymmetry. arXiv. arXiv: 1211.1039v1
Jamil Hetzel. (2012) Probing the supersymmetry breaking mechanism using renormalisation group invariants. arXiv. arXiv: 1211.1157v1
- November 5, 2012
- 05:10 AM
- 179 views
Breaking of a symmetry
by Marco Frasca in The Gauge Connection
This week-end has been somewhat longer in Italy due to November 1st holiday and I have had the opportunity to read a very fine book by Ian Aitchison: Supersymmetry in Particle Physics – An Elementary Introduction. This book gives a very clear introduction to SUSY with all the computations clearly stated and going into the [...]... Read more »
Dimopoulos, S., & Georgi, H. (1981) Softly broken supersymmetry and SU(5). Nuclear Physics B, 193(1), 150-162. DOI: 10.1016/0550-3213(81)90522-8
Marco Frasca. (2011) Chiral symmetry in the low-energy limit of QCD at finite temperature. Phys. Rev. C 84, 055208 (2011). arXiv: 1105.5274v4
- October 22, 2012
- 06:24 AM
- 218 views
Large-N gauge theories on the lattice
by Marco Frasca in The Gauge Connection
Today I have found on arXiv a very nice review about large-N gauge theories on the lattice (see here). The authors, Biagio Lucini and Marco Panero, are well-known experts on lattice gauge theories being this their main area of investigation. This review, to appear on Physics Report, gives a nice introduction to this approach to [...]... Read more »
Biagio Lucini, & Marco Panero. (2012) SU(N) gauge theories at large N. arXiv. arXiv: 1210.4997v1
Marco Frasca. (2008) Yang-Mills Propagators and QCD. Nuclear Physics B (Proc. Suppl.) 186 (2009) 260-263. arXiv: 0807.4299v2
Marco Frasca. (2011) Beyond one-gluon exchange in the infrared limit of Yang-Mills theory. arXiv. arXiv: 1110.2297v4
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
Marco Frasca. (2011) Chiral symmetry in the low-energy limit of QCD at finite temperature. Phys. Rev. C 84, 055208 (2011). arXiv: 1105.5274v4
- September 27, 2012
- 10:10 AM
- 278 views
Confinement revisited
by Marco Frasca in The Gauge Connection
Today it is appeared a definitive updated version of my paper on confinement (see here). I wrote this paper last year after a question put out to me by Owe Philipsen at Bari. The point is, given a decoupling solution for the gluon propagator in the Landau gauge, how does confinement come out? I would [...]... Read more »
Marco Frasca. (2011) Beyond one-gluon exchange in the infrared limit of Yang-Mills theory. arXiv. arXiv: 1110.2297v4
Kenneth G. Wilson. (1974) Confinement of quarks. Phys. Rev. D 10, 2445–2459 (1974) . DOI: 10.1103/PhysRevD.10.2445
Attilio Cucchieri, David Dudal, Tereza Mendes, & Nele Vandersickel. (2011) Modeling the Gluon Propagator in Landau Gauge: Lattice Estimates of Pole Masses and Dimension-Two Condensates. arXiv. arXiv: 1111.2327v1
M. Stingl. (1995) A Systematic Extended Iterative Solution for QCD. Z.Phys. A353 (1996) 423-445. arXiv: hep-th/9502157v3
P. Gonzalez, V. Mathieu, & V. Vento. (2011) Heavy meson interquark potential. Physical Review D, 114008. arXiv: 1108.2347v2
Marco Frasca. (2012) Low energy limit of QCD and the emerging of confinement. arXiv. arXiv: 1208.3756v2
Dimitra Karabali, V. P. Nair, & Alexandr Yelnikov. (2009) The Hamiltonian Approach to Yang-Mills (2 1): An Expansion Scheme and Corrections to String Tension. Nucl.Phys.B824:387-414,2010. arXiv: 0906.0783v1
- September 19, 2012
- 09:58 AM
- 298 views
Warp drive at NASA
by Marco Frasca in The Gauge Connection
I am currently a twitter user. One of my followings is Jeri Ryan. She has been Seven of Nine in Star Trek Voyager saga. Yesterday, it comes out of the blue what I read in one of her twits: NASA is developing warp drive! Indeed, Jeri was pointing to this link. This is a Gizmodo’s [...]... Read more »
Stefano Finazzi, Stefano Liberati, & Carlos Barceló. (2009) Semiclassical instability of dynamical warp drives. PHYSICAL REVIEW D 79, 124017 (2009). arXiv: 0904.0141v2
Miguel Alcubierre. (2000) The warp drive: hyper-fast travel within general relativity. Class.Quant.Grav.11:L73-L77,1994. arXiv: gr-qc/0009013v1
- September 10, 2012
- 10:07 AM
- 288 views
ATLAS and CMS papers published
by Marco Frasca in The Gauge Connection
Papers by ATLAS and CMS have appeared in Physics Letters B and can be freely downloaded. They report on the discovery of the Higgs-like particle on July 4th. CMS Collaboration (2012). Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC Physics Letters B DOI: 10.1016/j.physletb.2012.08.021 ATLAS [...]... Read more »
CMS Collaboration. (2012) Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC . Physics Letters B. DOI: 10.1016/j.physletb.2012.08.021
ATLAS Collaboration. (2012) Combined search for the Standard Model Higgs boson using up to 4.9 fb^{−1} of pp collision data at \sqrt{7} TeV with the ATLAS detector at the LHC . Physics Letters B. DOI: 10.1016/j.physletb.2012.02.044
- August 30, 2012
- 01:38 PM
- 296 views
Higgs boson and conformal symmetry
by Marco Frasca in The Gauge Connection
So far, I believed to be the only man on Earth to trust a complete absence of mass terms in the Standar Model (we call this conformal symmetry). I was wrong. Krzysztof Meissner and Hermann Nicolai anticipated this idea. Indeed, in a model where mass is generally banned, there is no reason to believe that [...]... Read more »
Krzysztof A. Meissner, & Hermann Nicolai. (2006) Conformal Symmetry and the Standard Model. Phys.Lett.B648:312-317,2007. arXiv: hep-th/0612165v4
Krzysztof A. Meissner, & Hermann Nicolai. (2012) A 325 GeV scalar resonance seen at CDF?. arXiv. arXiv: 1208.5653v1
Marco Frasca. (2010) Mass generation and supersymmetry. arXiv. arXiv: 1007.5275v2
Marco Frasca. (2010) Glueball spectrum and hadronic processes in low-energy QCD. Nucl.Phys.Proc.Suppl.207-208:196-199,2010. arXiv: 1007.4479v2
- August 23, 2012
- 01:28 PM
- 371 views
‘t Hooft and quantum computation
by Marco Frasca in The Gauge Connection
Gerard ‘t Hooft is one of greatest living physicists, one of the main contributors to the Standard Model. He has been awarded the Nobel prize in physics on 1999. I have had the opportunity to meet him in Piombino (Italy) at a conference on 2006 where he was there to talk about his view on [...]... Read more »
M. Hartmann, G. Mahler, & O. Hess. (2003) Gaussian quantum fluctuations in interacting many particle systems. Lett. Math. Phys. 68, 103-112 (2004). arXiv: math-ph/0312045v2
Elliott H. Lieb,, & Barry Simon. (1973) Thomas-Fermi Theory Revisited. Phys. Rev. Lett. 31, 681–683 (1973) . DOI: 10.1103/PhysRevLett.31.681
- August 1, 2012
- 04:23 AM
- 329 views
Papers by ATLAS and CMS on Higgs just appeared
by Marco Frasca in The Gauge Connection
As promised by the two collaborations at CERN, their papers have been today appeared on arXiv: “Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC“ “Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC“ [...]... Read more »
The ATLAS Collaboration. (2012) Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC. arXiv. arXiv: 1207.7214v1
The CMS Collaboration. (2012) Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC. arXiv. arXiv: 1207.7235v1
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