Superfluidity: how quantum mechanics became visible. Sébastien Balibar

Although the resulting Hopf algebra, which we call BELL (since it arises directly from a graphical description of the combinatorial Bell numbers), is rather too

But non locality is also visible when, for systems made of two particles located in remote regions of space, one writes the components of the two particle states of the type

mobility q s can result only from coherent transfer of momentum perpendicular to the step (which is not conserved) - and of course from incoherent scattering by

- the solid is superfluid above 25 mK but the critical velocity is too small for superfluidity to..

— The Foucault-Toepler optical method has been applied for visual observation of certain phenomena in liquid helium at temperatures 1.3-2.3° K, such as the existence of a maximum

Nous Studions toutes les propri6t6s thermo, hydrodynamiques, cinStiques et de transport de ces solutions, ainsi que leurs transitions de phase.. Nous suggcrons une th6orie simple

Argon which has a very weak (and quite negligible) quantum character. The corresponding value for the classical sound velo- city is simply obtained from eq. For liquid Neon, we

Abstract - The first measurements of acoustic reflection have been carried out, together with acoustic transmission at the solid-liquid interface of 4 ~ e and are used to