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- Institut d'Estudis Espacials de CatalunyaES488 papers
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86 papers · 1 filter
Effects of strong correlations for 2D Bose-Einstein condensed dipolar excitons
Yu. E. Lozovik, I. L. Kurbakov, G. E. Astrakharchik +2
By doing quantum Monte Carlo ab initio simulations we show that dipolar excitons, which are now under experimental study, actually are strongly correlated systems. Strong correlati…
Small primitive roots and malleability of RSA moduli
Luis Dieulefait, Jorge Jimenez Urroz
In a paper of P. Paillier and J. Villar a conjecture is made about the malleability of an RSA modulus. In this paper we present an explicit algorithm refuting the conjecture. Concr…
Effects of hydrostatic pressure on the magnetism and martensitic transition of Ni-Mn-In magnetic superelastic alloys
Lluis Manosa, Xavier Moya, Antoni Planes +7
We report magnetization and differential thermal analysis measurements as a function of pressure accross the martensitic transition in magnetically superelastic Ni-Mn-In alloys. It…
Off-diagonal Ground State Properties of a 1D Gas of Fermi Hard Rods
F. Mazzanti, G. E. Astrakharchik, J. Boronat +1
A variational Monte Carlo calculation of the one-body density matrix and momentum distribution of a system of Fermi hard rods (HR) is presented and compared with the same quantitie…
Mechanical detection of carbon nanotube resonator vibrations
D. Garcia-Sanchez, A. San Paulo, M. J. Esplandiu +4
Bending-mode vibrations of carbon nanotube resonator devices were mechanically detected in air at atmospheric pressure by means of a novel scanning force microscopy method. The fun…
Orbit decidability and the conjugacy problem for some extensions of groups
O. Bogopolski, A. Martino, E. Ventura
Given a short exact sequence of groups with certain conditions, , we prove that has solvable conjugacy problem if and only if the corresponding action su…