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49 papers · 1 filter
Can non-linear elasticity explain contact-line roughness at depinning?
Pierre Le Doussal, Kay Joerg Wiese, Elie Raphael +1
We examine whether cubic non-linearities, allowed by symmetry in the elastic energy of a contact line, may result in a different universality class at depinning. Standard linear el…
Ultrahigh Energy Nuclei Propagation in a Structured, Magnetized Universe
Eric Armengaud, Guenter Sigl, Francesco Miniati
We compare the propagation of iron and proton nuclei above 10^19 eV in a structured Universe with source and magnetic field distributions obtained from a large scale structure simu…
X-ray observation of micro-failures in granular piles approaching an avalanche
Alexandre Kabla, Georges Debregeas, Jean-Marc Di Meglio +1
An X-ray imaging technique is used to probe the stability of 3-dimensional granular packs in a slowly rotating drum. Well before the surface reaches the avalanche angle, we observe…
Refining the Proof of Planar Equivalence
A. Armoni, M. Shifman, G. Veneziano
We outline a full non-perturbative proof of planar (large-N) equivalence between bosonic correlators in a theory with Majorana fermions in the adjoint representation and one with D…
GRBs and the 511 keV emission of the Galactic bulge
E. Parizot, M. Cassé, R. Lehoucq +1
We consider the phenomenology of the 511 keV emission in the Galactic bulge, as recently observed by INTEGRAL, and propose a model is which the positrons are produced by gamma-ray…
Yang-Mills and some related algebras
Alain Connes, Michel Dubois-Violette
After a short introduction on the theory of homogeneous algebras we describe the application of this theory to the analysis of the cubic Yang-Mills algebra, the quadratic self-dual…