News
EPJ A - Vector Correlators in Lattice QCD: Methods and Applications
- Details
- Published on 10 August 2012
Vacuum polarisation, the modification of the photon propagator due to virtual electron-positron pairs, is one of the first quantum loop corrections encountered in field theory. In both QED and QCD it causes the running of the appropriate fine structure constant as the physical scale is varied, and also corrects the magnetic moments of electrons and muons from the value 2 predicted by the Dirac equation.
EPJ D - Largest ever gas mix caught in ultra-freeze trap
- Details
- Published on 10 August 2012
Towards a better understanding of subatomic particles using a new cold-atom setup
A team of scientists have made it easier to study atomic or subatomic-scale properties of the building blocks of matter (which also include protons, neutrons and electrons) known as fermions by slowing down the movement of a large quantity of gaseous atoms at ultra-low temperature. This is according to a study recently published in EPJ D as part of a cold quantum matter special issue, by researchers from the Paris-based École Normale Supérieure and the Non-Linear Institute at Nice Sophia-Antipolis University in France.
EPJ B - Random noise helps make signals clearer
- Details
- Published on 10 August 2012
Model shows that signal clarity only improves if specific energy conditions are met
Scientists have shown the energy conditions, under which a weak signal supplied to a physical system emerges as a stronger signal at the output thanks to the presence of random noise (a process known as stochastic resonance), in a paper that has just been published in EPJB.
EPJ E - The art of stabilising entangled spaghetti-like materials
- Details
- Published on 10 August 2012
Controlling forces between oppositely charged polymers opens a new route towards creating vectors for gene therapy
Gene therapy can only be effective if delivered by a stable complex molecule. Now, scientists have determined the conditions that would stabilise complex molecular structures that are subject to inherent attractions and repulsions triggered by electric charges at the surfaces of the molecules, in a study published in EPJE, by Valentina Mengarelli and her colleagues from the Solid State Physics Laboratory at the Paris-Sud University in Orsay, France, in collaboration with Paris 7 and Evry Universities scientists.
EPJ D - Instant nanodots grow on silicon to form sensing array
- Details
- Published on 10 August 2012
New methods for creating 3D nanostructures deposited on an array of regularly spaced indentations on the surface of silicon films opens the door for innovative nanosensors
Scientists have shown that it is now possible to simultaneously create highly reproductive three-dimensional silicon oxide nanodots on micrometric scale silicon films in only a few seconds. Xavier Landreau and his colleagues at the University of Limoges, France, demonstrated in their paper published in EPJ D that they were able to create a square array of such nanodots, using regularly spaced nanoindents on the deposition layer, that could ultimately find applications as biosensors for genomics or bio-diagnostics.
EPJ B - No extraordinary effects from microwave and mobile phone heating
- Details
- Published on 10 August 2012
Study quantifies effects of electric field-induced versus conventional heating
The effect of microwave heating and cell phone radiation on sample material is no different than a temperature increase, according to scientists from the Department of Chemistry and Biochemistry, Arizona State University, in Tempe, as published in a recent issue of EPJ B.
EPJ C - New Theory Editors-in-Chief and Fermi Prize for Dieter Haidt
- Details
- Published on 10 August 2012
The publishers of The European Physical Journal C – Particles and Fields are pleased to announce the appointment of Professors Gino Isidori (Frascati) and Sergei Odintsov (Barcelona) as new theory Editors-in-Chief. This follows the splitting of the theory section into Theory I: Phenomenology of the Standard Model and Beyond, now led by Gino Isidori, and Theory II: Gravitation, Astroparticle Physics and Cosmology, General Aspects of Quantum Field Theories and Alternatives, now led by Sergei Odintsov.
EPJ B - Can metals remember their shape at nanoscale, too?
- Details
- Published on 10 August 2012
How nickel-titanium nanometric-size particles change back to their memorised shape
University of Constance physicists Daniel Mutter and Peter Nielaba have visualised changes in shape memory materials down to the nanometric scale in an article published in EPJB.EPJ D - Not one, not two, not three, but four clones!
- Details
- Published on 10 August 2012
First quantum cloning machine to produce four copies
Xi-Jun Ren and Yang Xiang from Henan Universities in China, in collaboration with Heng Fan at the Institute of Physics of the Chinese Academy of Sciences, have produced a theory for a quantum cloning machine able to produce several copies of the state of a particle at atomic or sub-atomic scale, or quantum state, in an article published in EPJ D. This could have implications for quantum information processing methods used, for example, in message encryption systems.EPJ E - How biological capsules respond under stress
- Details
- Published on 10 August 2012
Innovative high-precision measuring tool to assess the bending elasticity of liposomes
Cosmetics and pharmaceutical drug delivery systems could be improved thanks to a new method developed to precisely measure the capability of capsule-like biological membranes to change shape under external stress. This work is outlined in a study published in EPJE by Philippe Méléard and Tanja Pott from the Rennes-based Institute of Chemical Sciences at the European University of Brittany and their colleagues from the Center for Biomembrane Physics at the University of Southern Denmark in Odense.
