# Post List

## All posts; Tags Include "Theoretical Physics"

• April 14, 2017
• 08:58 AM
• 205 views

# Well below 1%

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

• December 30, 2016
• 12:20 PM
• 383 views

# Yang-Mills theory paper gets published!

Exact solutions of quantum field theories are very rare and, normally, refer to toy models and pathological cases. Quite recently, I put on arxiv a pair of papers presenting exact solutions both of the Higgs sector of the Standard Model and the Yang-Mills theory made just of gluons. The former appeared a few month ago […]... Read more »

Marco Frasca. (2015) A theorem on the Higgs sector of the Standard Model. Eur. Phys. J. Plus (2016) 131: 199. arXiv: 1504.02299v3

Marco Frasca. (2015) Quantum Yang-Mills field theory. arXiv. arXiv: 1509.05292v1

Carl M. Bender, Kimball A. Milton, & Van M. Savage. (1999) Solution of Schwinger-Dyson Equations for ${\cal PT}$-Symmetric Quantum Field Theory. Phys.Rev.D62:085001,2000. arXiv: hep-th/9907045v1

• June 16, 2016
• 05:49 AM
• 843 views

# Higgs or not Higgs, that is the question

LHCP2016 is running yet with further analysis on 2015 data by people at CERN. We all have seen the history unfolding since the epochal event on 4 July 2012 where the announcement of the great discovery happened. Since then, also Kibble passed away. What is still there is our need of a deep understanding of the […]... Read more »

Marco Frasca. (2015) A theorem on the Higgs sector of the Standard Model. Eur. Phys. J. Plus (2016) 131: 199. arXiv: 1504.02299v3

• May 24, 2016
• 10:02 AM
• 802 views

# Should Biologists be Guided by Beauty?

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:/

• May 13, 2016
• 09:21 AM
• 850 views

# Using Supercomputers to Probe the Early Universe

Artist's depiction of the WMAP satellite gathering data to understand the Big Bang. Source: NASA.For decades physicists have been trying to decipher the first moments after the Big Bang. Using very large telescopes, for example, scientists scan the skies and look at how fast galaxies move. Satellites study the relic radiation left from the Big Bang, called the cosmic microwave background radiation. And finally, particle colliders, like the Large Hadron Collider at CERN, allow researchers to smas........ Read more »

• February 14, 2016
• 07:00 PM
• 558 views

# Quixotic Science

Almost all science stems from a need to explain what we see. Not general relativity. What comes first, theory or technology? a reflection after LIGO has detected gravitational waves.... Read more »

The LIGO Scientific Collaboration, & the Virgo Collaboration. (2016) Observation of Gravitational Waves from a Binary Black Hole Merger. Phys. Rev. Lett. 116, 061102 (2016). arXiv: 1602.03837v1

• December 27, 2015
• 11:07 AM
• 1,140 views

# Quantum gravity

Quantum gravity appears today as the Holy Grail of physics. This is so far detached from any possible experimental result but with a lot of attentions from truly remarkable people anyway. In some sense, if a physicist would like to know in her lifetime if her speculations are worth a Nobel prize, better to work […]... Read more »

Ali H. Chamseddine, Alain Connes, & Viatcheslav Mukhanov. (2014) Quanta of Geometry: Noncommutative Aspects. Phys. Rev. Lett. 114 (2015) 9, 091302. arXiv: 1409.2471v4

Ali H. Chamseddine, Alain Connes, & Viatcheslav Mukhanov. (2014) Geometry and the Quantum: Basics. JHEP 12 (2014) 098. arXiv: 1411.0977v1

• December 17, 2015
• 07:54 AM
• 863 views

# News from CERN

Two days ago, CERN presented their new results at 13 TeV to the World. Of course, collected data so far are not enough for conclusive results but the these are exciting anyway. The reason is that both the collaborations, CMS and ATLAS, see a bump at around 750 GeV in the decay. Summing up the results […]... Read more »

Marco Frasca. (2015) Quantum Yang-Mills field theory. arxiv. arXiv: 1509.05292v1

• November 1, 2015
• 05:42 AM
• 949 views

# News on propulsion at NASA

There has been a lot of rumor on measurements performed by Eagleworks labs at NASA this spring. After that, NASA imposed a veto on whatever information should coming out about the work of this group until peer-reviewed work should have appeared. Most of the problems come out from the question of the EmDrive. This is […]... Read more »

• September 2, 2015
• 05:03 AM
• 827 views

# Higgs even more standard

LHCP 2015 is going on at St. Peterburg and new results were presented by the two main collaborations at CERN. CMS and ATLAS combined the results from run 1 and improved the quality of the measured data of the Higgs particle discovered on 2012. CERN press release is here. I show you the main picture about […]... Read more »

• April 25, 2015
• 11:53 AM
• 1,142 views

# NASA and warp drive: An update

There is some excitement in the net about some news of Harold White’s experiment at NASA. I have uncovered it by chance at a forum. This is a well-frequented site with people at NASA posting on it and regularly updating about the work that they are carrying out. You can also have noticed some activity […]... Read more »

Marco Frasca. (2005) Strong coupling expansion for general relativity. Int.J.Mod.Phys.D15:1373-1386,2006. arXiv: hep-th/0508246v3

• April 8, 2015
• 03:48 PM
• 876 views

# The heat is magnon at magnetic/non-magnetic interfaces

A magnon is a quantised spin wave, i.e. a collective excitation of the spin angular momentum that is associated with electrons in a crystal structure. ...
The post The heat is magnon at magnetic/non-magnetic interfaces appeared first on Spin and Tonic.

Scott A. Bender and Yaroslav Tserkovnyak. (2015) Interfacial spin and heat transfer between metals and magnetic insulators. Physical Review B, 140402. info:/

• April 5, 2015
• 03:32 PM
• 1,162 views

# That Higgs is trivial!

Notwithstanding LHC has seen the particle, the Higgs sector of the Standard Model has some serious problems. This fact yielded more than one headache to physicists. One of these difficulties is called technically “triviality“. The scalar field theory, that is so well defined classically, does not exist as a quantum field theory unless is non-interacting. […]... Read more »

Renata Jora. (2015) $Φ^4$ theory is trivial. arXiv. arXiv: 1503.07298v1

Marco Frasca. (2006) Proof of triviality of $λφ^4$ theory. Int.J.Mod.Phys.A22:2433-2439,2007. arXiv: hep-th/0611276v5

I. L. Bogolubsky, E. -M. Ilgenfritz, M. Müller-Preussker, & A. Sternbeck. (2009) Lattice gluodynamics computation of Landau-gauge Green's functions in the deep infrared. Phys.Lett.B676:69-73,2009. arXiv: 0901.0736v3

• March 14, 2015
• 10:31 AM
• 1,128 views

# Is Higgs alone?

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 10, 2015
• 07:00 AM
• 1,553 views

# Pulling Us Toward Tractor Beams

Tractor beams pulling space ships are things of science fiction, but tractor beams pulling small objects on Earth are science fact. Beams usually push things away with their force, but we have learned to manipulate them so that they push things back to the source – we can do it with water, sound and even laser light.... Read more »

Shvedov, V., Davoyan, A., Hnatovsky, C., Engheta, N., & Krolikowski, W. (2014) A long-range polarization-controlled optical tractor beam. Nature Photonics, 8(11), 846-850. DOI: 10.1038/nphoton.2014.242

Mo Li, W. H. P. Pernice, & H. X. Tang. (2009) Tunable bipolar optical interactions between guided lightwaves. Nature Photonics. arXiv: 0903.5117v1

Démoré CE, Dahl PM, Yang Z, Glynne-Jones P, Melzer A, Cochran S, MacDonald MP, & Spalding GC. (2014) Acoustic tractor beam. Physical review letters, 112(17), 174302. PMID: 24836252

Punzmann, H., Francois, N., Xia, H., Falkovich, G., & Shats, M. (2014) Generation and reversal of surface flows by propagating waves. Nature Physics, 10(9), 658-663. DOI: 10.1038/nphys3041

Ruffner DB, & Grier DG. (2012) Optical conveyors: a class of active tractor beams. Physical review letters, 109(16), 163903. PMID: 23215079

• February 10, 2015
• 07:00 AM
• 1,691 views

# Sometimes Warped Thinking Is A Good Thing

As Star Trek’s 50th anniversary approaches, are we getting closer to traveling at light speed? Believe it or not – yes, we are. We have begun to understand and harness the power of antimatter, and the plasma bubble-driven warp drive has moved from silly idea to serious consideration – so much so that NASA has designed a warp drive ship, the IXS Enterprise, of course.... Read more »

S. Beghella-Bartoli, P.M. Bhujbal, A. Nas. (2015) Confirmation of Santilli's detection of antimatter galaxies via a telescope with concave lens. America Journal of Modern Physics, 4(1), 34. info:/

Ganiev, Y., Gordeev, V., Krasilnikov, A., Lagutin, V., Otmennikov, V., & Panasenko, A. (2000) Aerodynamic Drag Reduction by Plasma and Hot-Gas Injection. Journal of Thermophysics and Heat Transfer, 14(1), 10-17. DOI: 10.2514/2.6504

Ronan Keane, & Wei-Ming Zhang. (2012) Beamed Core Antimatter Propulsion: Engine Design and Optimization. J.Br.Interplanet.Soc. arXiv: 1205.2281v2

• January 8, 2015
• 05:36 PM
• 1,105 views

# What is going on at NASA?

As a physicist I have been always interested about experiments that can corroborate theoretical findings. Most of these often become important applications for everyday life or change forever the course of the history of mankind. With this in view, I am currently following with great interest the efforts by the NASA group headed by Harold […]... Read more »

Miguel Alcubierre. (2000) The warp drive: hyper-fast travel within general relativity. Class.Quant.Grav.11:L73-L77,1994. arXiv: gr-qc/0009013v1

David Garfinkle. (2003) Numerical simulations of generic singuarities. Phys.Rev.Lett. 93 (2004) 161101. arXiv: gr-qc/0312117v4

Marco Frasca. (2005) Strong coupling expansion for general relativity. Int.J.Mod.Phys.D15:1373-1386,2006. arXiv: hep-th/0508246v3

• December 8, 2014
• 06:59 AM
• 1,393 views

# Standard Model at the horizon

Hawking radiation is one of the most famous effects where quantum field theory combines successfully with general relativity. Since 1975 when Stephen Hawking uncovered it, this results has obtained a enormous consideration and has been derived in a lot of different ways. The idea is that, very near the horizon of a black hole, a […]... Read more »

V. B. Bezerra, H. S. Vieira, & André A. Costa. (2013) The Klein-Gordon equation in the spacetime of a charged and rotating black hole. Class. Quantum Grav. 31 (2014) 045003. arXiv: 1312.4823v1

H. S. Vieira, V. B. Bezerra, & C. R. Muniz. (2014) Exact solutions of the Klein-Gordon equation in the Kerr-Newman background and Hawking radiation. Annals of Physics 350 (2014) 14-28. arXiv: 1401.5397v4

Giovanni Collini, Valter Moretti, & Nicola Pinamonti. (2013) Tunnelling black-hole radiation with $φ^3$ self-interaction: one-loop computation for Rindler Killing horizons. Lett. Math. Phys. 104 (2014) 217-232. arXiv: 1302.5253v4

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) Hawking radiation and interacting fields. arXiv. arXiv: 1412.1955v1

• November 17, 2014
• 11:54 AM
• 1,105 views

# That’s a Higgs but how many?

CMS and ATLAS collaborations are yet up to work producing results from the datasets obtained in the first phase of activity of LHC. The restart is really near the corner and, maybe already the next summer, things can change considerably. Anyway what they get from the old data can be really promising and rather intriguing. […]... Read more »

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

Marco Frasca. (2012) Classical solutions of a massless Wess-Zumino model. J.Nonlin.Math.Phys. 20:4, 464-468 (2013). arXiv: 1212.1822v2

• September 21, 2014
• 04:40 PM
• 1,528 views

# DICE 2014

I have spent this week in Castiglioncello participating to the Conference DICE 2014. This Conference is organized with a cadence of two years with the main efforts due to Thomas Elze. I have been a participant to the 2006 edition where I gave a talk about decoherence and thermodynamic limit (see here and here). This […]... Read more »

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

Ali H. Chamseddine, Alain Connes, & Viatcheslav Mukhanov. (2014) Quanta of Geometry. arXiv. arXiv: 1409.2471v3