451 citations
- Consejo Superior de Investigaciones CientíficasES10 papers
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9 papers · 1 filter
Links and analytic invariants of superisolated singularities
I. Luengo-Velasco, A. Melle-Hernandez, A. Nemethi
By using superisolated surface singularities whose link is a rational homology sphere we give counterexamples to some of the most important conjetures concernig invariants of norma…
Effective damping in the Raman cooling of trapped ions
A. B. Klimov, J. L. Romero, J. Delgado +1
We present a method of treating the interaction of a single three-level ion with two laser beams. The idea is to apply a unitary transformation such that the exact transformed Hami…
Diverging Entanglement Length in Gapped Quantum Spin Systems
F. Verstraete, M. A. Martin-Delgado, J. I. Cirac
We prove the existence of gapped quantum Hamiltonians whose ground states exhibit an infinite entanglement length, as opposed to their finite correlation length. Using the concept…
Inequivalent classes of closed three-level systems
Andre B. Klimov, Hubert de Guise, Luis L. Sanchez-Soto
We show here that the and V configurations of three-level atomic systems, while they have recently been shown to be equivalent for many important physical quantities when drive…
A New Family of N-fold Supersymmetry: Type B
Artemio Gonzalez-Lopez, Toshiaki Tanaka
We construct a new family of N-fold supersymmetric systems which is referred to as ``type B''. A higher derivative representation of the N-fold supercharge for this new family is g…
Asymptotic aging in structural glasses
T. S. Grigera, V. Martin-Mayor, G. Parisi +1
Using a non-local Monte Carlo algorithm, we study the aging of a fragile glass, being able to follow it up to equilibibrium down to 0.89 Tmc (Tmc is the Mode-Coupling temperature)…