Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- IkerbasqueES1.8k papers
- Donostia International Physics CenterES914 papers
- Material Physics CenterES536 papers
- Centre National de la Recherche ScientifiqueFR419 papers
- Consejo Superior de Investigaciones CientíficasES315 papers
- The University of TokyoJP277 papers
- National Taiwan UniversityTW253 papers
- Technical University of MunichDE245 papers
- University of Science and Technology of ChinaCN241 papers
- Chinese Academy of SciencesCN234 papers
- Deutsches Elektronen-Synchrotron DESYDE234 papers
- Charles UniversityCZ226 papers
43 papers · 1 filter
Thin-film effects on the surface stopping power of a free electron gas
A. Garcia-Lekue, J. M. Pitarke
The electronic properties of thin films present quantum-size effects, which are a consequence of the finite size of the system. Here we focus on the investigation of these effects…
Comment on "Measurement of time of arrival in quantum mechanics"
A. D. Baute, I. L. Egusquiza, J. G. Muga
The analysis of the model quantum clocks proposed by Aharonov et al. [Phys. Rev. A 57 (1998) 4130 - quant-ph/9709031] requires considering evanescent components, previously ignored…
Recent Progress in the Computational Many-Body Theory of Metal Surfaces
M. Nekovee, J. M. Pitarke
In this article we describe recent progress in the computational many-body theory of metal surfaces, and focus on current techniques beyond the local-density approximation of densi…
Signature Change on the Brane
Marc Mars, Jose M. M. Senovilla, Raul Vera
We explore the possibility of having a good description of classical signature change in the brane scenario.
Electronic response of aligned multishell carbon nanotubes
J. M. Pitarke, F. J. Garcia-Vidal
We report calculations of the effective electronic response of aligned multishell carbon nanotubes. A local graphite-like dielectric tensor is assigned to every point of the multis…
Comment on "Foundations of quantum mechanics: Connection with stochastic processes"
D. Alonso, J. G. Muga, R. Sala Mayato
Recently, Olavo has proposed several derivations of the Schrodinger equation from different sets of hypothesis ("axiomatizations") [Phys. Rev. A 61, 052109 (2000)]. One of them is…
Gravitational Collapse in Constant Potential Bath
S. Jhingan, N. Dadhich, P. S. Joshi
We analyse here the gravitational collapse of directed null radiation in a background with a constant potential such as one produced by a star system like galaxy in which the colla…
Zigzag equilibrium structure in monatomic wires
Daniel Sanchez-Portal, Emilio Artacho, Javier Junquera +2
We have applied first-principles density-functional calculations to the study of the energetics, and the elastic and electronic properties of monatomic wires of Au, Cu, K, and Ca i…
General Electric-Magnetic decomposition of fields, positivity and Rainich-like conditions
Jose M M Senovilla
We show how to generalize the classical electric-magnetic decomposition of the Maxwell or the Weyl tensors to arbitrary fields described by tensors of any rank in general -dimen…
Jellium surface energy beyond the local-density approximation: Self-consistent-field calculations
J. M. Pitarke, A. G. Eguiluz
We report extensive self-consistent calculations of jellium surface energies, by going beyond the local-density approximation. The density-response function of a bounded free-elect…
A Tolman-Bondi-Lemaitre Cell-Model for the Universe and Gravitational Collapse
A. Chamorro, S. S. Deshingkar, I. H. Dwivedi +1
A piecewise Tolman-Bondi-Lemaitre (TBL) cell-model for the universe incorporating local collapsing and expanding inhomogeneities is presented here. The cell-model is made up of TBL…
One Sense per Collocation and Genre/Topic Variations
David Martinez, Eneko Agirre
This paper revisits the one sense per collocation hypothesis using fine-grained sense distinctions and two different corpora. We show that the hypothesis is weaker for fine-grained…
Enriching very large ontologies using the WWW
Eneko Agirre, Olatz Ansa, Eduard Hovy +1
This paper explores the possibility to exploit text on the world wide web in order to enrich the concepts in existing ontologies. First, a method to retrieve documents from the WWW…
Gravitational Collapse and Cosmological Constant
S. S. Deshingkar, S. Jhingan, A. Chamorro +1
We consider here the effects of a non-vanishing cosmological term on the final fate of a spherical inhomogeneous collapsing dust cloud. It is shown that depending on the nature of…
Qualitative analysis of dissipative cosmologies
A. Di Prisco, L. Herrera, J. Ibanez
The evolution of an homogeneous and isotropic dissipative fluid is analyzed using dynamical systems techniques. The dissipation is driven by bulk viscous pressure and the truncated…
Surface-state electron dynamics in noble metals
P. M. Echenique, J. Osma, M. Machado +3
Theoretical investigations of surface-state electron dynamics in noble metals are reported. The dynamically screened interaction is computed, within many-body theory, by going beyo…
New family of inhomogeneous -law cosmologies: example of gravitational waves in a homogeneous background
Jose M. M. Senovilla, Raul Vera
We present an explicit three-parameter class of , (), cosmological models admitting a two-dimensional group of isometries acting on spacelike surfa…
Devonshire-Landau free energy of BaTiO3 from first principles
Jorge Iniguez, S. Ivantchev, J. M. Perez-Mato +1
We have studied the Devonshire-Landau potential underlying the phase transition sequence of BaTiO3 using the first-principles effective Hamiltonian of Zhong, Vanderbilt, and Rabe […
Color conductivity and ladder summation in hot QCD
J. M. Martinez Resco, M. A. Valle Basagoiti
The color conductivity is computed at leading logarithmic order using a Kubo formula. We show how to sum an infinite series of planar ladder diagrams, assuming some approximations…
Hole dynamics in noble metals
I. Campillo, A. Rubio, J. M. Pitarke +2
We present a detailed analysis of hole dynamics in noble metals (Cu and Au), by means of first-principles many-body calculations. While holes in a free-electron gas are known to li…
Magnetic monopoles and vortices in the standard model of electroweak interactions
Ana Achúcarro
These lectures start with an elementary introduction to the subject of magnetic monopoles which should be accesible from any physics background. In the Weinberg-Salam model of elec…
Sources of quantum waves
A. D. Baute, I. L. Egusquiza, J. G. Muga
Due to the space and time dependence of the wave function in the time dependent Schroedinger equation, different boundary conditions are possible. The equation is usually solved as…
Nonlinear interaction of charged particles with a free electron gas beyond the random-phase approximation
T. del Rio Gaztelurrutia, J. M. Pitarke
A nonlinear description of the interaction of charged particles penetrating a solid has become of basic importance in the interpretation of a variety of physical phenomena. Here we…
Assisted inflation in Friedmann-Robertson-Walker and Bianchi spacetimes
J. M. Aguirregabiria, A. Chamorro, L. P. Chimento +1
We use exact general solutions for the spatially flat FRW and the anisotropic Bianchi I cosmologies to show that generically uncoupled scalar fields cooperate to make inflation mor…