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- Institució Catalana de Recerca i Estudis AvançatsES18 papers
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16 papers · 1 filter
Galois actions on Q-curves and Winding Quotients
Francesc Bars, Luis Dieulefait
We prove two "large images" results for the Galois representations attached to a degree Q-curve over a quadratic field : if is arbitrary, we prove maximality of the…
Stimulated and spontaneous relaxation in glassy systems
F. Ritort
Recent numerical simulations of a disordered system (Preprint arXiv:condmat/0307554) have shown the existence of two different relaxational processes (called stimulated and spontan…
Magnetic relaxation in terms of microscopic energy barriers in a model of dipolar interacting nanoparticles
Oscar Iglesias, Amilcar Labarta
The magnetic relaxation and hysteresis of a system of single domain particles with dipolar interactions are studied by Monte Carlo simulations. We model the system by a chain of He…
Propagation in a thermal graviton background
Daniel Arteaga, Renaud Parentani, Enric Verdaguer
It is well known that radiative corrections evaluated in nontrivial backgrounds lead to effective dispersion relations which are not Lorentz invariant. Since gravitational interact…
Bell's inequalities detect efficient entanglement
Antonio Acin, Nicolas Gisin, Lluis Masanes +1
We review the status of Bell's inequalities in quantum information, stressing mainly the links with quantum key distribution and distillation of entanglement. We also prove that fo…
Galois characterization of Endoscopy for rational Siegel modular forms
Luis Dieulefait
We establish a relation between Galois reducibility and Endoscopy for genus 2 Siegel cusp forms which have rational eigenvalues and are unramified at 3