• Qubits that never interact could exhibit past-future entanglement

    Updated: 2012-07-30 17:10:01
    (Phys.org) -- Typically, for two particles to become entangled, they must first physically interact. Then when the particles are physically separated and still share the same quantum state, they are considered to be entangled. But in a new study, physicists have investigated a new twist on entanglement in which two qubits become entangled with each other even though they never physically interact.

  • Introducing… the Particle Olympics!

    Updated: 2012-07-30 16:00:25
    With the 2012 summer Olympics underway, we at symmetry have just one question on our minds: Which particle would win which Olympic event?

  • Viewpoint: High Currents, When Hot

    Updated: 2012-07-30 14:00:00
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  • Viewpoint: An Extraordinary Josephson Junction

    Updated: 2012-07-30 14:00:00
    The combination of the Josephson effect and topological order provides a testing ground for the emergence of Majorana fermions in solid-state systems. Published Mon Jul 30, 2012

  • Running coupling and Yang-Mills theory

    Updated: 2012-07-30 11:05:00
    Forefront research, during its natural evolution, produces some potential cornerstones that, at the end of the game, can prove to be plainly wrong. When one of these cornerstones happens to form, even if no sound confirmation at hand is available, it can make life of researchers really hard. It can be hard time to get [...]

  • Strings 2012

    Updated: 2012-07-28 21:42:19
    The big yearly string theory conference was held this year in Munich over the past week. Strings 2012 was the latest in a series of conferences that started more than 20 years ago. I’ve now written something about so many … Continue reading →

  • Men at Strings 2012

    Updated: 2012-07-28 06:16:00
    : Physics Without Ideology Bite by Bite The search for a theory of everything : satire about bad candidates and gentle fun about good candidates , such as the strand-spaghetti . model 28 July 2012 Men at Strings 2012 The talks at Strings 2012 see here are worth following , if you want to see a group of older men in their 50s telling how nature should be , even though nature is in fact different . If you listen to the talks , you will get goose skin . Ideology really does bad things to smart . people Update For a positive exception , look at the pdf by Sandra Kortner it gives an excellent summary of LHC results . All these experimental results show that there is nothing beyond the standard model . Posted by Clara , once known as Nemo at 06:16 Email This BlogThis Share to Twitter Share to

  • Fermilab deputy director judges Google Science Fair

    Updated: 2012-07-27 19:24:00
    On July 23, Fermilab Deputy Director Young-Kee Kim joined 14 other scientists, science journalists and industry executives to judge the Google Science Fair in Palo Alto, California.

  • Physics doo-wop group’s last stand

    Updated: 2012-07-27 15:00:54
    At their final performance on July 21, it was apparent that the members of Les Horribles Cernettes, a physics-themed doo-wop group, loved every proton of the more than 500 people that packed the annual Hardronic Music Festival at CERN.

  • Focus: Landmarks—Lamb Shift Verifies New Quantum Concept

    Updated: 2012-07-27 14:00:00
    The 1947 discovery of a small discrepancy in hydrogen’s atomic spectrum came at just the right time to push quantum theory forward. Published Fri Jul 27, 2012

  • Endeavour crew members visit CERN to commemorate year of AMS

    Updated: 2012-07-26 20:32:45
    Five U.S. astronauts spoke at CERN Wednesday to celebrate a year of data-collection by the largest experiment in space.

  • Scenes from July 4: The discovery heard around the world

    Updated: 2012-07-26 16:26:53
    On July 4, CERN hosted a seminar to share the latest results in the search for the Higgs boson. Check out this collection of images from the historic day.

  • Synopsis: Cascading Compression

    Updated: 2012-07-26 14:00:00
    A new method for compressing laser pulses overcomes power constraints that hamper current compressor technology. Published Thu Jul 26, 2012

  • Synopsis: Don’t Bring the Noise

    Updated: 2012-07-26 14:00:00
    Noiseless amplification of multiple spatial channels in rubidium vapor can aid optical communications and quantum information processing. Published Thu Jul 26, 2012

  • Synopsis: Neutron Knockout

    Updated: 2012-07-26 14:00:00
    Knocking out neutrons or protons from an isotope of oxygen provides a successful test of an equation that relates nuclear masses. Published Thu Jul 26, 2012

  • Banks has given up

    Updated: 2012-07-25 06:18:00
    : Physics Without Ideology Bite by Bite The search for a theory of everything : satire about bad candidates and gentle fun about good candidates , such as the strand-spaghetti . model 25 July 2012 Banks has given up The latest preprint , http : arxiv.org abs 1207.5096 where Tom Banks predicts an axion at LHC scale , supersymmetry breaking , pyramid scheme' etc . shows that also Banks , one of the smartest guys in physics , cannot stop working on topics that do not correlate with . experiment Though he provides one idea that sticks : he writes in the appendix that any effective theory that yields the standard model should stem from a microscopic theory of quantum gravity at the Planck scale Why does nobody look for such a theory and then deduces the standard model from it , instead of

  • A little light (or rather, massive) Higgs music

    Updated: 2012-07-24 17:56:21
    Thanks to a few creative scientists, the recent discovery of a Higgs-like particle is music to more than just particle physicists’ ears.

  • Precious cargo: Dark matter experiment set to move underground

    Updated: 2012-07-23 21:10:59
    For the past two years, COUPP-4, a 4-kilogram bubble chamber experiment, has searched for signs of dark matter a mile underground at SNOLAB in Sudbury, Ontario. Now that experiment is about to get company – its big brother is moving in.

  • Can quantum theory be improved?

    Updated: 2012-07-23 15:10:01
    (Phys.org) -- Being correct 50% of the time when calling heads or tails on a coin toss won’t impress anyone. So when quantum theory predicts that an entangled particle will reach one of two detectors with just a 50% probability, many physicists have naturally sought better predictions. The predictive power of quantum theory is, in this case, equal to a random guess. Building on nearly a century of investigative work on this topic, a team of physicists has recently performed an experiment whose results show that, despite its imperfections, quantum theory still seems to be the optimal way to predict measurement outcomes.

  • Viewpoint: Metals Get an Awkward Cousin

    Updated: 2012-07-23 14:00:00
    A newly predicted state of matter is a simple theoretical example of a phase that conducts electricity but is not smoothly connected to our conventional model of metals. Published Mon Jul 23, 2012

  • How the Higgs can lead us to the dark universe

    Updated: 2012-07-23 00:31:53
    The media frenzy surrounding the Higgs discovery announcement has on the whole consisted of stories that reasonably accurately deal with the scientific implications. Journalists have for instance by now learned that “string theory predictions” are a good thing to ignore. … Continue reading →

  • Department of Energy advances Fermilab’s Mu2e experiment

    Updated: 2012-07-20 20:00:09
    Last week, Fermilab’s planned Mu2e experiment passed the second step of the Department of Energy's five-step approval process, only about a month after the DOE’s initial review.

  • Most sensitive dark-matter detector constrains search for WIMPs

    Updated: 2012-07-20 16:47:14
    The XENON collaboration announced this week that they detected no signs of potential dark matter particles during the last 13 months. Their results will be used to narrow the search for the unseen particles that scientists think make up most of the matter in the universe.

  • Focus: How to Control a Random Laser

    Updated: 2012-07-20 14:00:00
    Simulations show that a new technique can control the wavelength of a random laser—a type of laser that lacks mirrors and whose output has been impossible to control. Published Fri Jul 20, 2012

  • Dark matter no-show hobbles elegant particle theory

    Updated: 2012-07-19 18:39:00
    : Log in Email Password Remember me Your login is case sensitive I have forgotten my password Register now Activate my subscription Institutional login Athens login close My New Scientist Home News In-Depth Articles Blogs Opinion TV Galleries Topic Guides Last Word Subscribe Dating Look for Science Jobs SPACE TECH ENVIRONMENT HEALTH LIFE PHYSICS MATH SCIENCE IN SOCIETY Cookies Privacy Dark matter no-show hobbles elegant particle theory 18:39 19 July 2012 Physics Math Lisa Grossman , reporter Image : Francesco Arneodo LNGS-INFN Dark matter stubbornly refuses to come out of the shadows . The latest results from an underground detector show no sign of WIMPs , or weakly interacting massive particles , the still-theoretical particles thought to make up the invisible majority of the universe's .

  • Synopsis: The Physics of Droplets Takes Off

    Updated: 2012-07-19 14:00:00
    High-speed camera studies show the detailed behavior of liquid droplets bouncing and eventually shooting off of a hot surface. Published Thu Jul 19, 2012

  • Synopsis: Building a Better Atom Trap

    Updated: 2012-07-19 14:00:00
    An improved method for trapping cesium atoms near dielectric nanofibers raises possibilities for applications as well as tests of fundamental physics. Published Thu Jul 19, 2012

  • Synopsis: Looking for No Neutrinos

    Updated: 2012-07-19 14:00:00
    A new limit on the half-life of neutrinoless double-beta decay sets an upper limit on the Majorana neutrino mass Published Thu Jul 19, 2012

  • Synopsis: Splitting Matter Waves with Light

    Updated: 2012-07-19 14:00:00
    A new design for a matter-beam splitter uses crossed lasers to make a “fork in the road” for traveling matter waves. Published Thu Jul 19, 2012

  • Large Synoptic Survey Telescope nears final design phase

    Updated: 2012-07-19 01:00:47
    The Large Synoptic Survey Telescope just received another boost. The National Science Foundation announced today that it will advance the giant telescope to the final design stage.

  • Two New Experimental Results

    Updated: 2012-07-18 15:07:53
    Today brings news of two new experimental results, both consistent with the Standard Model: At the Higgs Hunting 2012 conference starting today, ATLAS reports results from the WW decay channel for the Higgs. At the July 4 joint announcement, CMS … Continue reading →

  • H-WW channel at ATLAS

    Updated: 2012-07-18 10:17:33
    Today is started Higgs Hunting conference at Orsay (France). Data for WW decay of Higgs boson from ATLAS have been made public. The talk is here. The data provide a clear excess in this channel and the rate is somewhat higher with respect to the Standard Model expectations of times. Gamma-Gamma channel remains the one [...]

  • Implications of LHC Results

    Updated: 2012-07-16 18:37:01
    The past few days at CERN there has been a workshop on Implications of LHC results for TeV-scale physics. This is the third in a series of these workshops, which have a goal of evaluating the implications of LHC results … Continue reading →

  • Viewpoint: The Choreographer of a Most Unusual Electron Dance

    Updated: 2012-07-16 14:00:00
    A new approach to finding the electronic potentials in density-functional theory—one of the most important computational tools in condensed matter and quantum chemistry—is proposed. Published Mon Jul 16, 2012

  • Viewpoint: Not Every Exit is an Entrance

    Updated: 2012-07-16 14:00:00
    Experiments demonstrate a new way to prevent light from retracing its steps, which could potentially be integrated with other components on a chip to process optical information. Published Mon Jul 16, 2012

  • A verifiable alternative to the Higgs Boson

    Updated: 2012-07-15 11:25:06
    TweetWe have shown throughout "The Imagineer’s Chronicles" and its companion book "The Reality of the Fourth *Spatial* Dimension" there would be many theoretical advantages to defining the universe in terms of four *spatial* dimensions instead of four dimensional space-time. Fermilab What is the Higgs boson One is that it would allow physicists to understand mass [...]

  • Questions about the ATLAS 2011 results

    Updated: 2012-07-14 01:21:00
    : Physics Without Ideology Bite by Bite The search for a theory of everything : satire about bad candidates and gentle fun about good candidates , such as the strand-spaghetti . model 14 July 2012 Questions about the ATLAS 2011 results This link shows the original 2011 data results from the ATLAS experiment , taken from https : atlas.web.cern.ch Atlas GROUPS PHYSICS PAPERS HIGG-2012-17 We all recall that the peak was much higher than the expected peak , if the Higgs is at 125 . GeV In summer 2012, the same 2011 data was analyzed again , when it was known that CMS had also seen something at the energy , and it was graphed as follows : https : atlas.web.cern.ch Atlas GROUPS PHYSICS CONFNOTES ATLAS-CONF-2012-091 fig_09a.png Even though the bump in this reselected 2011 sample looks in a sense

  • Focus: Black Holes May Produce Lithium

    Updated: 2012-07-13 14:00:00
    Theorists predict that the matter surrounding some black holes may be hot enough for nuclear fusion, which could generate lithium and deepen the mysteries surrounding lithium in the universe. Published Fri Jul 13, 2012

  • Synopsis: Turning from Nuclei to Electrons for Dark-Matter Detection

    Updated: 2012-07-12 14:00:00
    A new analysis shows that it is possible to look for dark-matter particles with mass far below 1 giga-electron-volt by using atomic ionization. Published Thu Jul 12, 2012

  • Synopsis: Measuring Many-Body Entanglement

    Updated: 2012-07-12 14:00:00
    Two proposed experiments may allow measurement of how much entanglement is present in a many-body quantum system. Published Thu Jul 12, 2012

  • Synopsis: Drumming to the Beat of the Vacuum

    Updated: 2012-07-09 14:00:00
    A novel measurement of the Casimir force may help settle a long-standing debate over how to deal with a certain type of vacuum fluctuation. Published Mon Jul 09, 2012

  • Viewpoint: The Twisted Paths of Bosons

    Updated: 2012-07-09 14:00:00
    The explanation for why helium doesn’t solidify at low temperatures may be more complicated than previously thought. Published Mon Jul 09, 2012

  • Quote of the day

    Updated: 2012-07-09 08:32:53
    “So far, the h particle does indeed walk and quack very much like a Higgs boson.“ John Ellis and Tevong You  Filed under: Particle Physics, Physics, Quote Tagged: CERN, Higgs particle

  • Classical problem becomes undecidable in a quantum setting

    Updated: 2012-07-09 06:10:01
    (Phys.org) -- As a testament to how differently things work in the quantum and classical regimes, physicists have found that a problem that is easily solved in a classical context cannot be solved at all in a quantum context. The physicists think that the same situation applies to many other similar problems, which could have implications for quantum computing applications and quantum many-body models, which describe microscopic systems.

  • QCD 12 and Higgs’ tears

    Updated: 2012-07-08 20:37:28
    I have spent this week in Montpellier being a participant to QCD 12, a biannual conference organized by Stephan Narison. It is the third time that I go to Montpellier for this conference and there are always very good reasons for being there. Essentially, the quality of physics and beauty of the city are already [...]

  • Are ATLAS people serious?

    Updated: 2012-07-08 19:28:00
    : Physics Without Ideology Bite by Bite The search for a theory of everything : satire about bad candidates and gentle fun about good candidates , such as the strand-spaghetti . model 8 July 2012 Are ATLAS people serious Is this the 5 sigma result of a serious experiment Nobody in his right mind will agree that the black data points are due to the dotted curve . Taken from https : atlas.web.cern.ch Atlas GROUPS PHYSICS CONFNOTES ATLAS-CONF-2012-091 Bonus question : Are there more points above or below the red line Posted by Clara , once known as Nemo at 19:28 Email This BlogThis Share to Twitter Share to Facebook 6 : comments Ervin Goldfain 8 July 2012 22:58 , Clara I see a lot of up and down fluctuation in the data but I have no clue on how the final graphs were arrived at . Tommaso has

  • Are CMS people serious?

    Updated: 2012-07-08 07:20:00
    : Physics Without Ideology Bite by Bite The search for a theory of everything : satire about bad candidates and gentle fun about good candidates , such as the strand-spaghetti . model 8 July 2012 Are CMS people serious Look at slide 42 of the CMS presentation of July 4th , shown above . If you manage to see any peak at 126 GeV in any graph that shows the 2012 data , you are really special . Nobody in his right mind will agree that the black data points are due to the red dotted curve . From this slide , by adding the 2011 data , CMS people deduce the clear peak of page 43. The whole process looks more like magic , less like science . Are these people all dreaming I do not believe the conclusions by CMS yet . More data is needed . Posted by Clara , once known as Nemo at 07:20 Email This

  • Short Items, Higgs-free

    Updated: 2012-07-07 20:49:21
    The Simons Foundation has some more wonderful interviews with mathematicians. There’s one with Pierre Deligne, and another with Robert MacPherson. The MacPherson piece describes not just mathematics, but also the unusual personal and professional collaboration of MacPherson and his student … Continue reading →

  • Hard times for spaghetti!

    Updated: 2012-07-06 21:28:00
    : Physics Without Ideology Bite by Bite The search for a theory of everything : satire about bad candidates and gentle fun about good candidates , such as the strand-spaghetti . model 6 July 2012 Hard times for spaghetti The Higgs has been found . Bad times for spaghetti I hope to tell more about what Schiller thinks in the near . future The important thing remains that there is still no trace of supersymmetry and similar nonsense . String theory remains nonsense , but the people believing in it will take longer to see that they are wrong . They will fall deeper . Poor them . Update Schiller has added some comments on his research page The two experiments at the LHC in Geneva have observed a boson with a mass around 126 GeV . It is not clear yet whether the boson is elementary or whether

  • Focus: Saltwater Blobs Explain Puzzling Ocean Patterns

    Updated: 2012-07-06 14:00:00
    Surprisingly uniform layers that form in the ocean result from salt fingers—long, vertical tubes of water with salt content different from their surroundings—according to simulations. Published Fri Jul 06, 2012

  • Higgs, Higgs, Higgs

    Updated: 2012-07-05 18:34:09
    I’m trying to get over my Higgs obsession, and move on to other topics, but one last posting about this for now… The first thing to say is that this is the biggest thing to happen in fundamental physics in … Continue reading →

  • Synopsis: Separating Glass and Jamming Transitions

    Updated: 2012-07-05 14:00:00
    Though often treated similarly, glass and jamming transitions are qualitatively different. Published Thu Jul 05, 2012

  • Synopsis: Weak Measurement of Polarization by a Slit

    Updated: 2012-07-05 14:00:00
    Focusing a beam of light on a slit reveals details of its polarization with surprising sensitivity. Published Thu Jul 05, 2012

  • Synopsis: Capturing Droplets by the Neck

    Updated: 2012-07-05 14:00:00
    The universal shape of necking liquids as they form drops has been measured experimentally. Published Thu Jul 05, 2012

  • Higgs particle finally found!

    Updated: 2012-07-04 10:16:21
    After a two hours seminar, both CMS and ATLAS spokepersons confirmed a 5 sigmas discovery of a new particle that is consistent with the Higgs particle of the Standard Model. The mass is in agreement with previous clues on last December seminar from CERN: About 125 GeV for both experiments. Congratulations for the great discovery [...]

  • Quantum Diaries

    Updated: 2012-07-04 04:16:10
    Quantum Diaries Thoughts on work and life from particle physicists from around the . world Home About Quantum Diaries Latest Posts All Blogs John Felde UC Davis USA View Blog Read Bio Latest Posts 2012.03.05 Fast Photosensors for Neutrino Physics 2011.11.22 Recent Events at UC Davis 2011.11.09 First Double Chooz Neutrino Oscillation Result USLHC USLHC USA View Blog Read Bio Latest Posts 2012.07.26 If I could turn back time 2012.07.20 Higgs Dependence Day : The Nobel Perspective 2012.07.19 The Post-Higgs Hangover : where’s the new physics Frank Simon MPI for Physics Germany View Blog Read Bio Latest Posts 2012.07.04 Plus Two 2011.12.14 After the talk is before the talk 2011.10.24 Breathe Flip Tanedo USLHC USA View Blog Read Bio Latest Posts 2012.07.19 The Post-Higgs Hangover : where’s the

  • Happy Higgs Day

    Updated: 2012-07-04 03:31:09
    I hear reports that mobs of possibly violent physics live-bloggers have massed outside the CERN auditorium where the Higgs results will be discussed tomorrow morning. I’m going to sleep through this, then wake up late tomorrow (it’s a vacation day … Continue reading →

  • Quantum Diaries

    Updated: 2012-07-03 17:25:57
    Quantum Diaries Thoughts on work and life from particle physicists from around the . world Home About Quantum Diaries Latest Posts All Blogs John Felde UC Davis USA View Blog Read Bio Latest Posts 2012.03.05 Fast Photosensors for Neutrino Physics 2011.11.22 Recent Events at UC Davis 2011.11.09 First Double Chooz Neutrino Oscillation Result USLHC USLHC USA View Blog Read Bio Latest Posts 2012.07.26 If I could turn back time 2012.07.20 Higgs Dependence Day : The Nobel Perspective 2012.07.19 The Post-Higgs Hangover : where’s the new physics Frank Simon MPI for Physics Germany View Blog Read Bio Latest Posts 2012.07.04 Plus Two 2011.12.14 After the talk is before the talk 2011.10.24 Breathe Flip Tanedo USLHC USA View Blog Read Bio Latest Posts 2012.07.19 The Post-Higgs Hangover : where’s the

  • Viewpoint: Putting a Spin on Superheavy Elements

    Updated: 2012-07-03 14:00:00
    Gamma-ray spectroscopy of the superheavy nucleus ^{256}Rutherfordium reveals details of its nonspherical shape and internal structure—the heaviest element for which such information has been obtained. Published Tue Jul 03, 2012

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