8.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- L. Sánchez‐Soto128 · h 37
- M. Martin-Delgado126 · h 47
- F. Llanes-Estrada122 · h 28
- P. Pérez-González2 profiles120 · h 71
- V. Martín-Mayor112 · h 41
- J. Caballero3 profiles103 · h 36
- D. Montes2 profiles100 · h 47
- A. Dobado96 · h 32
- A. L. Maroto79 · h 32
- F. Domínguez‐Adame79 · h 28
- J. Gallego73 · h 30
- L. A. Fernández70 · h 28
- Instituto de Astrofísica de CanariasES749 papers
- Centre National de la Recherche ScientifiqueFR727 papers
- Consejo Superior de Investigaciones CientíficasES669 papers
- Universidad de La LagunaES660 papers
- Universidad Autónoma de MadridES549 papers
- Instituto de Astrofísica de AndalucíaES514 papers
- National Institute for AstrophysicsIT368 papers
- Centro de AstrobiologíaES366 papers
- Universidad Carlos III de MadridES354 papers
- University of PaduaIT351 papers
- Institute of Mathematical SciencesIN350 papers
- Institute of Space SciencesES347 papers
60 papers · 1 filter
Generation of gravitational waves by generic sources in de Sitter space-time
H. J. de Vega, J. Ramirez, N. Sanchez
We study the generation of gravitational radiation by sources moving in the de Sitter background. Exploiting the maximal symmetry and the conformal flatness of de Sitter space-time…
Comment on "Evidence for the Droplet/Scaling Picture of Spin Glasses"
E. Marinari, G. Parisi, J. J. Ruiz-Lorenzo +1
In a recent letter Moore et al. claim to exhibit evidence for a non-mean-field behavior of the Ising spin glass. We show that their claim is insubstantial, and by analyzing in…
The time structure of Cherenkov images generated by TeV gamma-rays and by cosmic rays
HEGRA Collaboration, M. Hess et al
The time profiles of Cherenkov images of cosmic-ray showers and of gamma-ray showers are investigated, using data gathered with the HEGRA system of imaging atmospheric Cherenkov te…
Symmetries of Discrete Dynamical Systems Involving Two Species
D. Gomez-Ullate, S. Lafortune, P. Winternitz
The Lie point symmetries of a coupled system of two nonlinear differential-difference equations are investigated. It is shown that in special cases the symmetry group can be infini…
Strange form factors of the proton: a new analysis of the neutrino (antineutrino) data of the BNL-734 experiment
W. M. Alberico, M. B. Barbaro, S. M. Bilenky +5
We consider ratios of elastic neutrino(antineutrino)-proton cross sections measured by the Brookhaven BNL-734 experiment and use them to obtain the neutral current (NC) over charge…
Exterior Differential System for Cosmological G2 Perfect Fluids and Geodesic Completeness
L. Fernandez-Jambrina, L. M. Gonzalez-Romero
In this paper a new formalism based on exterior differential systems is derived for perfect-fluid spacetimes endowed with an abelian orthogonally transitive G2 group of motions act…
On the Universality Class of Monopole Percolation in Scalar QED
L. A. Fernandez, V. Martin-Mayor
We study the critical properties of the monopole-percolation transition in U(1) lattice gauge theory coupled to scalars at infinite () gauge coupling. We find strong scaling c…
Study of a microcanonical algorithm on the spin glass model in d=3
J. J. Ruiz-Lorenzo, C. L. Ullod
We consider a microcanonical local algorithm to be applied on the spin glass model. We have compared the results coming from a microcanonical Monte Carlo simulation with th…
Optical and UV observations of a strong flare in the young, single K2-dwarf LQ Hya
D. Montes, S. H. Saar, A. Collier Cameron +1
We present high resolution optical echelle spectra and IUE observations during a strong flare on 1993 December 22 in the very active, young, rapidly rotating, single K2 dwarf LQ Hy…
Generalized off-equilibrium fluctuation-dissipation relations in random Ising systems
Giorgio Parisi, Federico Ricci-Tersenghi, Juan J. Ruiz-Lorenzo
We show that the numerical method based on the off-equilibrium fluctuation-dissipation relation does work and is very useful and powerful in the study of disordered systems which s…
Nonequilibrium chiral perturbation theory and pion decay functions
A. Gomez Nicola, V. Galan-Gonzalez
We extend chiral perturbation theory to study a meson gas out of thermal equilibrium. Assuming that the system is initially in equilibrium below the critical temperature and workin…
Thermal bosonisation in the sine-Gordon and massive Thirring models
A. Gomez Nicola, D. A. Steer
We study bosonisation in the massive Thirring and sine-Gordon models at finite temperature T and nonzero fermion chemical potential . For that purpose we use both canonical oper…
Phase Diagram of the 2-Leg Heisenberg Ladder with Alternating Dimerization
M. A. Martin-Delgado, J. Dukelsky, G. Sierra
Using the Lanczos method we determine the phase diagram of the 2-leg AF-Heisenberg ladder with alternating dimerization. It consists of a resonating valence bond phase and a dimer…
Generating Quadrilateral and Circular Lattices in KP Theory
Adam Doliwa, Manuel Manas, Luis Martinez Alonso
The bilinear equations of the -component KP and BKP hierarchies and a corresponding extended Miwa transformation allow us to generate quadrilateral and circular lattices from co…
Li I enhancement during a long-duration stellar flare
David Montes, Lawrence W. Ramsey
We report the possible detection of a Li I 6708 AA line enhancement during an unusual long-duration optical flare in the recently discovered, X-ray/EUV selected, chromospherically…
Pseudo-orthogonal groups and integrable dynamical systems in two dimensions
J. A. Calzada, M. A. del Olmo, M. A. Rodriguez
Integrable systems in low dimensions, constructed through the symmetry reduction method, are studied using phase portrait and variable separation techniques. In particular, invaria…
Finite temperature dynamics of vortices in the two dimensional anisotropic Heisenberg model
Till Kamppeter, Franz G. Mertens, Angel Sanchez +3
We study the effects of finite temperature on the dynamics of non-planar vortices in the classical, two-dimensional anisotropic Heisenberg model with XY- or easy-plane symmetry. To…
Full shell model calculation of the binding energies of the nuclei
E. Caurier, G. Martinez-Pinedo, F. Nowacki +3
Binding energies and other global properties of nuclei in the middle of the shell, such as M1, E2 and Gamow-Teller sum rules, have been obtained using a new Shell Model code (…
Relativistic current densities for bound spin-orbit partners and the longitudinal-transverse response in (e,e'p) processes
J. A. Caballero, T. W. Donnelly, E. Moya de Guerra +1
Scalar, baryon and vector--current densities in coordinate and momentum space are calculated within a relativistic mean--field model. The role of the low components of the bound nu…
Self-Diffusion in Simple Models: Systems with Long-Range Jumps
A. Asselah, R. Brito, J. L. Lebowitz
We review some exact results for the motion of a tagged particle in simple models. Then, we study the density dependence of the self diffusion coefficient, , in lattice sys…
Multiwavelength optical observations of the chromospherically active binary system MS Ser
J. Sanz-Forcada, D. Montes, M. J. Fernandez-Figueroa +2
We present here a continuation of our ongoing project of multiwavelength optical observations aimed at studying the chromosphere of active binary systems using the information prov…
A long-duration flare in the X-ray/EUV selected chromospherically active binary 2RE J0743+224
D. Montes, L. W. Ramsey
2RE J0743+224 (BD +23 1799) is a chromospherically active star selected by X-rays and EUV emission detected in the Einstein Slew Survey and ROSAT Wide Field Camara (WFC) all sky su…
Chromospheric activity of ROSAT discovered weak-lined T Tauri stars
D. Montes, L. W. Ramsey
We have started a high resolution optical observation program dedicated to the study of chromospheric activity in weak-lined T Tauri stars (WTTS) recently discovered by the ROSAT A…
Fundamental Group for some Cuspidal Curves
Jose Ignacio Cogolludo
We construct a family of plane curves as pull-backs of a conic for abelian coverings of P^2. If the conic is tangent to the ramification lines one obtains a family of curves of deg…