Physics posts
- February 10, 2012
- 12:11 PM
- 47 views
Dust is finally settling…
by Marco Frasca in The Gauge Connection
The situation about Yang-Mills theory is finally settling down. I do not mean that mathematicians’ community has finally decided the winner of the Millenium prize but rather that people working on the study of two-point functions on a pure Yang-Mills theory have finally a complete scenario for it. These studies have seen very hot debates [...]... Read more »
Attilio Cucchieri, David Dudal, & Nele Vandersickel. (2012) The No-Pole Condition in Landau gauge: Properties of the Gribov Ghost Form-Factor and a Constraint on the 2d Gluon Propagator. arXiv. arXiv: 1202.1912v1
Axel Maas. (2007) Two- and three-point Green's functions in two-dimensional Landau-gauge Yang-Mills theory. Phys.Rev.D75:116004,2007. arXiv: 0704.0722v2
Boucaud, P., Gómez, M., Leroy, J., Le Yaouanc, A., Micheli, J., Pène, O., & Rodríguez-Quintero, J. (2010) Low-momentum ghost dressing function and the gluon mass. Physical Review D, 82(5). DOI: 10.1103/PhysRevD.82.054007
Marco Frasca. (2007) Infrared Gluon and Ghost Propagators. Phys.Lett.B670:73-77,2008. arXiv: 0709.2042v6
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
Axel Weber. (2011) Epsilon expansion for infrared Yang-Mills theory in Landau gauge. arXiv. arXiv: 1112.1157v1
- February 10, 2012
- 05:23 AM
- 26 views
Forming crystals from supercooled liquids with lasers
by DundeePhysics in Dundee Physics
One of the things that we are working on in the lab is the study of ice nucleation making use of optically trapped droplets. Nucleation is in the starting point for processes such as freezing and crystallization, and so obviously is of great scientific and industrial importance. Another of the things that my group is [...]... Read more »
Ward, M., McHugh, S., & Alexander, A. (2012) Non-photochemical laser-induced nucleation of supercooled glacial acetic acid. Physical Chemistry Chemical Physics, 14(1), 90. DOI: 10.1039/c1cp22774b
- February 8, 2012
- 01:01 PM
- 59 views
Coaxial ‘cables’ make great lasers, too
by Joerg Heber in All that matters
When Oliver Heaviside invented the coaxial cable in 1880 he could not have foreseen the implications of his idea on modern nanotechnology. His coaxial cables consist of three layers: an inner metallic core, surrounded by an insulator, surrounded by a metallic layer on the outside. The benefit of this design is that the outer metallic [...]... Read more »
Khajavikhan, M., Simic, A., Katz, M., Lee, J., Slutsky, B., Mizrahi, A., Lomakin, V., & Fainman, Y. (2012) Thresholdless nanoscale coaxial lasers. Nature, 482(7384), 204-207. DOI: 10.1038/nature10840
- February 8, 2012
- 12:44 PM
- 49 views
Bio-heat transfer simulation of retinal laser irradiation
by Arunn in nOnoScience (a.k.a. Unruled Notebook)
From 2008, we have been investigating the effects of (human) retinal laser irradiation, a specific project of the general bio-thermo-fluids problem of laser interaction with tissues irrigated by blood flow. The work was done with suitable and timely input from (Dr. Lingam Gopal, then Chairman of) the research division of Shankar Nethralaya, a Chennai-based leading [...]... Read more »
Narasimhan, A., & Jha, K. (2011) BIO-HEAT TRANSFER SIMULATION OF SQUARE AND CIRCULAR ARRAY OF RETINAL LASER IRRADIATION. Frontiers in Heat and Mass Transfer, 2(3). DOI: 10.5098/hmt.v2.3.3005
Jha, K., & Narasimhan, A. (2011) Three-dimensional bio-heat transfer simulation of sequential and simultaneous retinal laser irradiation. International Journal of Thermal Sciences, 50(7), 1191-1198. DOI: 10.1016/j.ijthermalsci.2011.02.005
- February 6, 2012
- 08:39 AM
- 59 views
A perfect couple for designing chemical reactions
by Joerg Heber in All that matters
We are all familiar with the basic ways in which light interacts with matter, when light absorption causes atoms to move and creates heat, or when light gets absorbed by the outer electrons of atoms so that they move into energetically excited states, which is how electricity in solar cells is created. Common to both [...]... Read more »
Schwartz, T., Hutchison, J., Genet, C., & Ebbesen, T. (2011) Reversible Switching of Ultrastrong Light-Molecule Coupling. Physical Review Letters, 106(19). DOI: 10.1103/PhysRevLett.106.196405
Hutchison, J., Schwartz, T., Genet, C., Devaux, E., & Ebbesen, T. (2012) Modifying Chemical Landscapes by Coupling to Vacuum Fields. Angewandte Chemie International Edition. DOI: 10.1002/anie.201107033
- February 6, 2012
- 06:25 AM
- 62 views
How Snowflakes Are Formed
by Jaime Menchen in United Academics
The delicate structure of snowflakes unfolds before your eyes, like a flower blooming. Scientist Kenneth Libbrecht has studied how snowflakes are formed.... Read more »
Kenneth G. Libbrecht. (2011) Observations of an Edge-enhancing Instability in Snow Crystal Growth near -15 C. Cornell University Library. arXiv: 1111.2786v1
- February 2, 2012
- 10:35 AM
- 64 views
Numerical evidence for the square root of a Wiener process
by Marco Frasca in The Gauge Connection
Brownian motion is a very kind mathematical object being very keen to numerical simulations. There are a plenty of them for any platform and software so that one is able to check very rapidly the proper working of a given hypothesis. For these aims, I have found very helpful the demonstration site by Wolfram and [...]... Read more »
Marco Frasca. (2012) Quantum mechanics is the square root of a stochastic process. arXiv. arXiv: 1201.5091v2
- January 31, 2012
- 06:04 AM
- 105 views
Quantum mechanics and stochastic processes: Revised paper posted
by Marco Frasca in The Gauge Connection
After having fixed the definition of the extended Itō integral, I have posted a revised version of my paper on arXiv (see here). The idea has been described here. A full account of this story is given here. The interesting aspect from a physical standpoint is the space that is fluctuating both for a Wiener [...]... Read more »
Marco Frasca. (2012) Quantum mechanics is the square root of a stochastic process. arXiv. arXiv: 1201.5091v2
- January 31, 2012
- 06:00 AM
- 95 views
Correcting presbyopia with corneal inlays: ¿reinventing the wheel or the advantages of simplicity?
by Pablo Artal in Optics confidential
A simple method to correct for presbyopia is evaluated...... Read more »
Tabernero, J., Schwarz, C., Fernandez, E., & Artal, P. (2011) Binocular Visual Simulation of a Corneal Inlay to Increase Depth of Focus. Investigative Ophthalmology , 52(8), 5273-5277. DOI: 10.1167/iovs.10-6436
- January 30, 2012
- 05:02 PM
- 91 views
An X-ray laser—sounds cool, but what is it?
by Cath in Basal Science (BS) Clarified
You may have noticed there was a lot of coverage on lasers last week. Some of the headlines really caught my attention: “X-Ray Laser Turns Up the Heat to 3.6 Million Degrees” or “World’s Most Powerful X-Ray Laser Super-Heats Aluminum Foil to 3.6 Million Degrees”. Sounds like an impressive laser, right? I wondered what an [...]... Read more »
Vinko, S., Ciricosta, O., Cho, B., Engelhorn, K., Chung, H., Brown, C., Burian, T., Chalupský, J., Falcone, R., Graves, C.... (2012) Creation and diagnosis of a solid-density plasma with an X-ray free-electron laser. Nature. DOI: 10.1038/nature10746
- January 27, 2012
- 03:42 PM
- 102 views
Evading Piau’s paradox
by Marco Frasca in The Gauge Connection
Disclaimer: This post is somewhat technical. Recently, I posted a paper on arXiv (see here) claiming that quantum mechanics is the square root of a Wiener process. In order to get my results I have to consider some exotic Itō integrals that Didier Piau showed not existent (see here and here). In my argument I [...]... Read more »
Marco Frasca. (2012) Quantum mechanics is the square root of a stochastic process. arXiv. arXiv: 1201.5091v1
- January 26, 2012
- 09:14 PM
- 55 views
Sniffing out Parkinson's disease
by Nsikan Akpan in That's Basic Science
Via my new Nature Network blog, a breathalyzer for Parkinson's disease based on carbon nanotube technology.... Read more »
Tisch, U., Aluf, Y., Ionescu, R., Nakhleh, M., Bassal, R., Axelrod, N., Robertman, D., Tessler, Y., Finberg, J., & Haick, H. (2011) Detection of Asymptomatic Nigrostriatal Dopaminergic Lesion in Rats by Exhaled Air Analysis Using Carbon Nanotube Sensors. ACS Chemical Neuroscience, 2147483647. DOI: 10.1021/cn200093r
- January 25, 2012
- 04:55 PM
- 131 views
do decaying neutrons travel between universes?
by Greg Fish in weird things
According to string theorists, our universe is just one of many in an otherwise infinite cosmos and that all the different universes don't just sit quietly in a vacuum, but actively interact with each other when space and time bend and fold to create the right conditions for different forces and particles to jump between [...]... Read more »
Michael Sarrazin, Guillaume Pignol, Fabrice Petit, & Valery V. Nesvizhevsky. (2012) Experimental limits on neutron disappearance into another braneworld. n/a. arXiv: 1201.3949v1
- January 25, 2012
- 05:22 AM
- 127 views
Quantum mechanics and the square root of Brownian motion
by Marco Frasca in The Gauge Connection
There is a very good reason why I was silent in the past days. The reason is that I was involved in one of the most difficult article to write down since I do research (and are more than twenty years now!). This paper arose during a very successful collaboration with two colleagues of mine: [...]... Read more »
Marco Frasca. (2012) Quantum mechanics is the square root of a stochastic process. arXiv. arXiv: 1201.5091v1
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
Grabert, H., Hänggi, P., & Talkner, P. (1979) Is quantum mechanics equivalent to a classical stochastic process?. Physical Review A, 19(6), 2440-2445. DOI: 10.1103/PhysRevA.19.2440
- January 16, 2012
- 09:51 AM
- 233 views
Is this journal for real?
by Neurobonkers in Neurobonkers
This year 134 suspect new journals have appeared from the abyss, all published by the same clandestine company “Scientific & Academic Publishing, USA“. Scientists have been quick to raise the alarm and ruthless in their response.... Read more »
Morrison, Heather. (2012) Scholarly Communication in Crisis. Freedom for scholarship in the internet age. Simon Fraser University School of Communication. info:/
- January 15, 2012
- 02:09 PM
- 140 views
Shrinking magnetic storage devices
by Joerg Heber in All that matters
I now finally got the time to follow-up on last week’s paper in Science by Andreas Heinrich‘s group at IBM on magnetic storage elements that are only a few atoms in size. There have been a few misconceptions in some of the news reports with some being plainly wrong (‘smallest storage device ever made’), and many didn’t [...]... Read more »
Loth, S., Baumann, S., Lutz, C., Eigler, D., & Heinrich, A. (2012) Bistability in Atomic-Scale Antiferromagnets. Science, 335(6065), 196-199. DOI: 10.1126/science.1214131
- January 14, 2012
- 12:35 PM
- 153 views
to boost data density, chill and apply magnetism
by Greg Fish in weird things
Chances are, your computer's current hard drive can store around 500 GB, and if you're a real video editing or graphics enthusiast, you either bought yourself, or customized your computer to have a 1 TB drive. But what if in the same space that your hard drive takes up now, you could host a multi-PB [...]... Read more »
Loth, S., Baumann, S., Lutz, C., Eigler, D., & Heinrich, A. (2012) Bistability in Atomic-Scale Antiferromagnets. Science, 335(6065), 196-199. DOI: 10.1126/science.1214131
- January 14, 2012
- 07:25 AM
- 109 views
Explaining Titan's Alien Weather System
by Kelly Oakes in Basic Space
Underneath Titan’s dense atmosphere lies something rather unusual, by terrestrial standards. Some features of the Saturnian moon, at first glance, might look similar to some features we have on Earth — it is the only other body in the solar system with lakes, and appears to have an active weather system. But instead of water, it’s methane that rains from the skies to fill Titan’s vast lakes, before it evaporates to form clouds that cover the surface. Curiously similar to the water cycle here on Earth, but at the same time rather alien.... Read more »
Schneider, T., Graves, S., Schaller, E., & Brown, M. (2012) Polar methane accumulation and rainstorms on Titan from simulations of the methane cycle. Nature, 481(7379), 58-61. DOI: 10.1038/nature10666
- January 13, 2012
- 10:45 AM
- 153 views
counting exoplanets by their gravitational wells
by Greg Fish in weird things
Depending on who you talk to, planets around alien suns are either somewhat rare due to the chaotic nature of planetary formation around infant stars, or even more plentiful than the stars themselves. Since exoplanets are rather small and dim, lost in the glare of their host suns, spotting them takes a lot of time [...]... Read more »
Cassan, A., Kubas, D., Beaulieu, J., Dominik, M., Horne, K., Greenhill, J., Wambsganss, J., Menzies, J., Williams, A., Jørgensen, U.... (2012) One or more bound planets per Milky Way star from microlensing observations. Nature, 481(7380), 167-169. DOI: 10.1038/nature10684
- January 11, 2012
- 05:13 PM
- 5 views
The Nano-ear: ‘Hearing’ using optical tweezers
by DundeePhysics in Dundee Physics
A discussion of a new technique making use of optical tweezers to 'hear' extremely low signal acoustic waves.... Read more »
Ohlinger, A., Deak, A., Lutich, A., & Feldmann, J. (2012) Optically Trapped Gold Nanoparticle Enables Listening at the Microscale. Physical Review Letters, 108(1). DOI: 10.1103/PhysRevLett.108.018101
topics
join us!
Do you write about peer-reviewed research in your blog? Use ResearchBlogging.org 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.
News
Editor's Selections: Programmed cell death in unicellular parasites, a novel gene transfer agent from Baronella, and full-contact herpes gladiatorum
Editor's Selections: Family medical histories, a grave in the Bahamas, medieval malaria, and macaques
Editor's Selections: Blood Tests for Depression, the Axolotl, Dopamine, and The Bachelor
