Post List

All posts; Tags Include "Quantum Physics"

(Modify Search »)

  • December 30, 2016
  • 12:20 PM

Yang-Mills theory paper gets published!

by Marco Frasca in The Gauge Connection

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

  • August 22, 2016
  • 11:11 PM

Measuring altitude — with clocks?

by Jens Wilkinson in It Ain't Magic

Measuring altitude using atomic clocks seems like a crazy idea, but it’s already being done at RIKEN in Japan.... Read more »

Takano, T., Takamoto, M., Ushijima, I., Ohmae, N., Akatsuka, T., Yamaguchi, A., Kuroishi, Y., Munekane, H., Miyahara, B., & Katori, H. (2016) Geopotential measurements with synchronously linked optical lattice clocks. Nature Photonics. DOI: 10.1038/nphoton.2016.159  

  • May 24, 2016
  • 10:02 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:/

  • December 27, 2015
  • 11:07 AM

Quantum gravity

by Marco Frasca in The Gauge Connection

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

  • February 17, 2015
  • 07:05 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  

  • February 10, 2015
  • 07:00 AM

Sometimes Warped Thinking Is A Good Thing

by Mark E. Lasbury in The 'Scope

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

  • December 8, 2014
  • 06:59 AM

Standard Model at the horizon

by Marco Frasca in The Gauge Connection

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

  • December 7, 2014
  • 03:23 AM

Building the Best Computer

by Viputheshwar Sitaraman in Draw Science

The American spy/intelligence agency, IARPA, is working to address the shortcomings of existing supercomputers through its program, C3. [Infographic]... Read more »

Holmes, D., Ripple, A., & Manheimer, M. (2013) Energy-Efficient Superconducting Computing—Power Budgets and Requirements. IEEE Transactions on Applied Superconductivity, 23(3), 1701610-1701610. DOI: 10.1109/TASC.2013.2244634  

  • October 20, 2014
  • 12:12 PM

How a camera and quantum physics could improve phone security

by This Science is Crazy! in This Science Is Crazy!

New study uses mobile phone camera to detect light, using shot noise to generate true random numbers which researchers hope could be used for encryption in the future.... Read more »

Sanguinetti, B., Martin, A., Zbinden, H., & Gisin, N. (2014) Quantum Random Number Generation on a Mobile Phone. Physical Review X, 4(3). DOI: 10.1103/PhysRevX.4.031056  

  • September 21, 2014
  • 04:40 PM

DICE 2014

by Marco Frasca in The Gauge Connection

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

  • June 19, 2014
  • 03:10 PM

LANL Researchers Boost Quantum-Dot Solar Cell Efficiency

by dailyfusion in The Daily Fusion

Researchers at the Los Alamos National Laboratory have achieved an almost four-fold increase of the carrier multiplication yield using nanoengineered quantum dots.... Read more »

Cirloganu, C., Padilha, L., Lin, Q., Makarov, N., Velizhanin, K., Luo, H., Robel, I., Pietryga, J., & Klimov, V. (2014) Enhanced carrier multiplication in engineered quasi-type-II quantum dots. Nature Communications. DOI: 10.1038/ncomms5148  

  • June 12, 2014
  • 06:30 PM

Novel Material to Increase CQD Solar Cell Efficiency

by dailyfusion in The Daily Fusion

Researchers in the University of Toronto’s Edward S. Rogers Sr. Department of Electrical & Computer Engineering have designed and tested a new class of solar-sensitive nanoparticle, an air-stable n-type colloidal quantum dot (CQD) solid.... Read more »

Ning, Z., Voznyy, O., Pan, J., Hoogland, S., Adinolfi, V., Xu, J., Li, M., Kirmani, A., Sun, J., Minor, J.... (2014) Air-stable n-type colloidal quantum dot solids. Nature Materials. DOI: 10.1038/nmat4007  

  • March 6, 2014
  • 07:05 AM

Evidence of the square root of Brownian motion

by Marco Frasca in The Gauge Connection

A mathematical proof of existence of a stochastic process involving fractional exponents seemed out of question after some mathematicians claimed this cannot not exist. This observation is strongly linked to the current definition and may undergo revision if nature does not agree with it. Stochastic process are very easy to simulate on a computer. Very […]... Read more »

  • February 9, 2014
  • 10:19 AM

Nature already patched it

by Marco Frasca in The Gauge Connection

Dennis Overbye is one of the best science writer around. Recently, he wrote a beautiful piece on the odd behavior of non-converging series like and so on to infinity (see here). This article contains a wonderful video, this one where it shown why and this happens only when this series is taken going to infinity. […]... Read more »

  • February 2, 2014
  • 01:11 PM

Back to work

by Marco Frasca in The Gauge Connection

I would like to have a lot more time to write on my blog. Indeed, time is something I have no often and also the connection is not so good as I would like in the places I spend most of it. So, I take this moment to give an update of what I have […]... Read more »

Kuroda N, Ulmer S, Murtagh DJ, Van Gorp S, Nagata Y, Diermaier M, Federmann S, Leali M, Malbrunot C, Mascagna V.... (2014) A source of antihydrogen for in-flight hyperfine spectroscopy. Nature communications, 3089. PMID: 24448273  

M. W. Ray,, E. Ruokokoski,, S. Kandel,, M. Möttönen,, & D. S. Hall. (2014) Observation of Dirac monopoles in a synthetic magnetic field. Nature, 657-660. DOI: 10.1038/nature12954  

  • January 31, 2014
  • 02:56 AM

Des batteries à base de végétaux

by Jean-Christophe Lavocat in Presstor

L'écosystème du stockage d'énergie se dirige de plus en plus vers des solutions alternatives inspirées par la Nature.... Read more »

Huskinson B, Marshak MP, Suh C, Er S, Gerhardt MR, Galvin CJ, Chen X, Aspuru-Guzik A, Gordon RG, & Aziz MJ. (2014) A metal-free organic-inorganic aqueous flow battery. Nature, 505(7482), 195-8. PMID: 24402280  

  • January 19, 2014
  • 11:45 PM

Kooky history of the quantum mind: reviving realism

by Artem Kaznatcheev in Evolutionary Games Group

One of my hobbies in undergrad was to spend time reading and editing Wikipedia. Towards the end of my studies, I started to specialize in going through Wikipedia’s fat-tail, removing articles to non-notable individuals, and trying to counter pseudoscientists, kooks, and cranks. Trying to understand why people subscribe to pseudoscience; how to demarcate real and […]... Read more »

  • January 15, 2014
  • 08:06 AM

Chinese Scientists Suggest Using Infrared Light for Hydrogen Production

by dailyfusion in The Daily Fusion

Infrared light could help split water into hydrogen and oxygen, despite the fact that infrared photons have less energy than is needed to drive the reaction. That is the claim of physicists in China, who have calculated that the reaction could proceed with the help of a bilayer catalyst that has a strong internal electric dipole.... Read more »

  • December 4, 2013
  • 12:00 PM

Ou étiez-vous, photons ?

by Dr. Goulu in Pourquoi Comment Combien

Traduction d’un article récent [1] que j’ai trouvé fort bien fait sur un sujet difficile d’accès : la mécanique quantique. L’expérience décrite est géniale, et son interprétation par une symétrie du temps me titille particulièrement les neurones…... Read more »

Ariel Danan, Demitry Farfurnik, Shimshon Bar-Ad, & Lev Vaidman. (2013) Asking photons where have they been. ArXiv. arXiv: 1304.7469v2

  • November 11, 2013
  • 01:01 PM

Let’s Explore Quantum Teleportation

by Jason Carr in Wired Cosmos

Quantum teleportation is perhaps the closest that modern technology has come to developing a sort of teleporter for transmitting physical objects across distances without the use of some physical method of moving them. Quantum teleportation involves transmitting the exact state that an atom or photon exists in, and then using this data at a different … Read More →... Read more »

Satyabrata Adhikari, A S Majumdar, Dipankar Home, A K Pan, & P Joshi. (2012) Quantum teleportation using non-orthogonal entangled channels. Phys. Scr. DOI: 10.1088/0031-8949/85/04/045001  

join us!

Do you write about peer-reviewed research in your blog? Use to make it easy for your readers — and others from around the world — to find your serious posts about academic research.

If you don't have a blog, you can still use our site to learn about fascinating developments in cutting-edge research from around the world.

Register Now

Research Blogging is powered by SMG Technology.

To learn more, visit