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
50 papers · 1 filter
A Density Matrix Renormalization Group study of Excitons in Dendrimers
M. A. Martin-Delgado, J. Rodriguez-Laguna, G. Sierra
We introduce the density matrix renormalization group (DMRG) method as an efficient computational tool for one-exciton approximations with off-diagonal disorder. This method allows…
Alternating-Spin Ladders in a Magnetic Field: New Magnetization Plateaux
A. Langari, M. A. Martin-Delgado
We study numerically the formation of magnetization plateaux with the Lanczos method in 2-leg ladders with mixed spins of magnitudes located at alternating posi…
Low Energy Properties of Ferrimagnetic 2-leg Ladders: a Lanczos study
A. Langari, M. A. Martin-Delgado
We apply the Lanczos method to a 2-leg ladder with mixed spins of magnitudes located at alternating positions along the ladder. The effect of dimerization i…
Gravitino production during preheating and the equivalence theorem
A. L. Maroto, J. R. Pelaez
We review our results on the calculation of helicity 1/2 gravitino production during preheating. The method we present is based on the equivalence between goldstinos and longitudin…
Reanalysis of the high energy cutoff of the 1997 Mkn 501 TeV energy spectrum
HEGRA Collaboration, F. Aharonian
Data taken with the HEGRA system of imaging atmospheric Cherenkov telescopes during the 1997 flares of Mkn 501 are reanalyzed using an algorithm providing improved energy resolutio…
Entangled-State Lithography: Tailoring any Pattern with a Single State
Gunnar Bjork, Luis L. Sanchez-Soto, Jonas Soderholm
We demonstrate a systematic approach to Heisenberg-limited lithographic image formation using four-mode reciprocal binominal states. By controlling the exposure pattern with a simp…
Polarization transfer in the HeH reaction
S. Dieterich, P. Bartsch, D. Baumann +39
Polarization transfer in the 4He(e,e'p)3H reaction at a Q^2 of 0.4 (GeV/c)^2 was measured at the Mainz Microtron MAMI. The ratio of the transverse to the longitudinal polarization…
Chiral Perturbation Theory and Unitarization
E. Ruiz Arriola, A. Gómez Nicola, J. Nieves +1
We review our recent work on unitarization and chiral perturbation theory both in the and the sectors. We pay particular attention to the Bethe-Salpeter and Inverse Ampli…
Optical photometry of the UCM Lists I and II. II-B band surface photometry and morphological discussion
P. G. Perez-Gonzalez, J. Gallego, J. Zamorano +1
We present Johnson B surface photometry for the UCM Survey galaxies. One-dimensional bulge-disk decomposition is attempted, discussing on fitting functions and computational proced…
Twisting type-N vacuum fields with a group
F. J. Chinea, F. Navarro-Lerida
We derive the equations corresponding to twisting type-N vacuum gravitational fields with one Killing vector and one homothetic Killing vector by using the same approach as that de…
Single-Block Renormalization Group: Quantum Mechanical Problems
M. A. Martin-Delgado, J. Rodriguez-Laguna, G. Sierra
We reformulate the density matrix renormalization group method (DMRG) in terms of a single block, instead of the standard left and right blocks used in the construction of the supe…
A Family of Grover's Quantum Searching Algorithms
Alberto Galindo, Miguel A. Martin-Delgado
We introduce the concepts of Grover operators and Grover kernels to systematically analyse Grover's searching algorithms. Then, we investigate a one-parameter family of quantum sea…
Temperature dependence and mechanisms for vortex pinning by periodic arrays of Ni dots in Nb films
J. I. Martin, M. Velez, A. Hoffmann +2
Pinning interactions between superconducting vortices in Nb and magnetic Ni dots were studied as a function of current and temperature to clarify the nature of pinning mechanisms.…
Extensions of Higgs Bundles
Steven B. Bradlow, Tomas L. Gomez
We prove a Hitchin-Kobayashi correspondence for extensions of Higgs bundles. The results generalize known results for extensions of holomorphic bundles. Using Simpson's methods, we…
The UV and IR Origin of Nonabelian Chiral Gauge Anomalies on Noncommutative Minkowski Space-time
C. P. Martin
We discuss both the UV and IR origin of the one-loop triangle gauge anomalies for noncommutative nonabelian chiral gauge theories with fundamental, adjoint and bi-fundamental fermi…
The TeV Energy Spectrum of Mkn 501 Measured with the Stereoscopic Telescope System of HEGRA during 1998 and 1999
The HEGRA Collaboration, F. Aharonian, A. Akhperjanian +1
During 1997, the BL Lac object Mkn 501 went into an extraordinary state of high X-ray and TeV gamma-ray activity, lasting more than 6 months. In this paper we report on the TeV emi…
Primordial magnetic fields from metric perturbations
Antonio L. Maroto
We study the amplification of electromagnetic vacuum fluctuations induced by the evolution of scalar metric perturbations at the end of inflation. Such perturbations break the conf…
Hybrid Monte Carlo algorithm for the Double Exchange Model
J. L. Alonso, L. A. Fernandez, F. Guinea +2
The Hybrid Monte Carlo algorithm is adapted to the simulation of a system of classical degrees of freedom coupled to non self-interacting lattices fermions. The diagonalization of…
Variational Mean Field approach to the Double Exchange Model
J. L. Alonso, L. A. Fernandez, F. Guinea +2
It has been recently shown that the double exchange Hamiltonian, with weak antiferromagnetic interactions, has a richer variety of first and second order transitions than previousl…
Sextics with singular points in special position
E. Artal Bartolo, J. Carmona Ruber, J. I. Cogolludo +1
In this paper we show a Zariski pair of sextics which is not a degeneration of the original example given by Zariski. This is the first example of this kind known. The two curves o…
Relativistic nuclear structure effects in (e,e' vec{p})
J. M. Udias, Javier R. Vignote
Results for recoil nucleon induced polarization for are presented using various approximations for the relativistic nucleonic current, at the kinematics of a recent…
Mapping the star formation history of Mrk86: II. Stellar populations and global interpretation
A. Gil de Paz, J. Zamorano, J. Gallego
In this paper, continuation of Gil de Paz et al. (Paper I), we derive the main properties of the stellar populations in the Blue Compact Dwarf galaxy Mrk86. Ages, stellar masses, m…
Mapping the star formation history of Mrk86: I. Data and models
A. Gil de Paz, J. Zamorano, J. Gallego +1
We have obtained optical (BVR, [OIII]5007 and Halpha), near infrared (JHK) imaging and long-slit optical spectroscopy for the Blue Compact Dwarf galaxy Mrk86 (NGC2537). In this pap…
Multiwavelength optical observations of chromospherically active binary systems. III. High resolution echelle spectra from Ca II H&K to Ca II IRT
D. Montes, M. J. Fernandez-Figueroa, E. De Castro +3
This is the third paper of a series aimed at studying the chromosphere of active binary systems using the information provided for several optical spectroscopic features. High reso…