Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of GothenburgSE951 papers
- Centre National de la Recherche ScientifiqueFR805 papers
- Leiden UniversityNL590 papers
- Max Planck Institute for Radio AstronomyDE405 papers
- European Southern ObservatoryCL356 papers
- Center for Astrophysics Harvard & SmithsonianUS313 papers
- Leiden Observatory304 papers
- California Institute of TechnologyUS296 papers
- National Astronomical Observatory of JapanJP280 papers
- Observatoire de ParisFR268 papers
- Stockholm UniversitySE262 papers
- Centro de AstrobiologíaES252 papers
94 papers · 1 filter
Words restricted by 3-letter generalized multipermutation patterns
Alexander Burstein, Toufik Mansour
We find exact formulas and/or generating functions for the number of words avoiding 3-letter generalized multipermutation patterns and find which of them are equally avoided.
General Relativistic Rossby-Haurwitz waves of a slowly and differentially rotating fluid shell
Marek A. Abramowicz, Luciano Rezzolla, Shin'ichirou Yoshida
We show that, at first order in the angular velocity, the general relativistic description of Rossby-Haurwitz waves (the analogues of r-waves on a thin shell) can be obtained from…
Ferromagnetic GaMnAs/GaAs superlattices - MBE growth and magnetic properties
J. Sadowski, R. Mathieu, P. Svedlindh +9
We have studied the magnetic properties of (GaMnAs)m/(GaAs)n superlattices with magnetic GaMnAs layers of thickness between 8 and 16 molecular layers (ML) (23-45 Å), and with nonma…
A model for spin-polarized transport in perovskite manganite bi-crystal grain boundaries
R. Gunnarsson, A. Kadigrobov, Z. Ivanov
We have studied the temperature dependence of low-field magnetoresistance and current-voltage characteristics of a low-angle bi-crystal grain boundary junction in perovskite mangan…
Universal Quantum Gates for Single Cooper Pair Box Based Quantum Computing
P. Echternach, C. P. Williams, S. C. Dultz +3
We describe a method for achieving arbitrary 1-qubit gates and controlled-NOT gates within the context of the Single Cooper Pair Box (SCB) approach to quantum computing. Such gates…
Two-proton events in the 17F(p,2p)16O reaction
L. V. Grigorenko, R. C. Johnson, I. J. Thompson +1
In a recent experimental study (Gomez del Campo et al, PRL 86, 43 (2001)) of the reaction 17F(p,2p)16O, two-proton events were measured from excitations near a 1-, E*=6.15 MeV stat…
Coloured permutations containing and avoiding certain patterns
T. Mansour
Following Mansour, let be the set of all coloured permutations on the symbols with colours , which is the analogous of the symmetric group when r…
Fractional Branes and N=1 Gauge Theories
M. Bertolini, P. Di Vecchia, G. Ferretti +1
We discuss fractional D3-branes on the orbifold C^3/Z_2*Z_2. We study the open and the closed string spectrum on this orbifold. The corresponding N=1 theory on the brane has, gener…
Projection operator approach to general constrained systems
Igor Batalin, Simon Lyakhovich, Robert Marnelius
We propose a new BRST-like quantization procedure which is applicable to dynamical systems containing both first and second class constraints. It requires no explicit separation in…
Photoemission studies of GaMnAs: Mn-concentration dependent properties
H. Asklund, L. Ilver, J. Kanski +2
Using angle-resolved photoemission, we have investigated the development of the electronic structure and the Fermi level pinnning in GaMnAs with Mn concentrations in…
Gravitational wave amplification of seed magnetic fields
C. G. Tsagas, P. K. S. Dunsby, M. Marklund
We discuss how gravitational waves could amplify seed magnetic fields to strengths capable of supporting the galactic dynamo. We consider the interaction of a weak magnetic field w…
Statistics of selectively neutral genetic variation
A. Eriksson, B. Haubold, B. Mehlig
Random models of evolution are instrumental in extracting rates of microscopic evolutionary mechanisms from empirical observations on genetic variation in genome sequences. In this…
Dielectric mixtures -- electrical properties and modeling
Enis Tuncer, Yuriy V. Serdyuk, Stanislaw M. Gubanski
In this paper, a review on dielectric mixtures and the importance of the numerical simulations of dielectric mixtures are presented. It stresses on the interfacial polarization obs…
The detection of neutron clusters
F. M. Marques, M. Labiche, N. A. Orr
A new approach to the production and detection of bound neutron clusters is presented. The technique is based on the breakup of beams of very neutron-rich nuclei and the subsequent…
The quantum Hilbert space of a chiral two-form in d = 5 + 1 dimensions
M. Henningson
We consider the quantum theory of a two-form gauge field on a space-time which is a direct product of time and a spatial manifold, taken to be a compact five-manifold with no torsi…
CN and HNC Line Emission in IR Luminous Galaxies
S. Aalto, A. G. Polatidis, S. Huttemeister +1
We have observed HNC 1-0, CN 1-0 and 2-1 line emission in a sample of 13 IR luminous (LIRGs, L_IR > 10E11 Lo) starburst and Seyfert galaxies. HNC 1-0 is detected in 9, CN 1-0 is de…
Enhancement of magnetic ordering by the stress fields of grain boundaries in ferromagnets
A. Kadigrobov, Z. Ivanov, R. I. Shekhter +1
In the paper we predict a distinctive change of magnetic properties and considerable increase of the Curie temperature caused by the strain fields of grain boundaries in ferromagne…
Dissipation of non-linear circularly polarized Alfven waves
R. Turkmani, U. Torkelsson
We study propagating Alfven waves by solving the time-dependent equations of magnetohydrodynamics (MHD) in one dimension numerically. In a homogeneous medium the circularly polariz…
Role of bulk and surface phonons in the decay of metal surface states
A. Eiguren, B. Hellsing, F. Reinert +5
We present a comprehensive theoretical investigation of the electron-phonon contribution to the lifetime broadening of the surface states on Cu(111) and Ag(111), in comparison with…
D-brane probes on G2 Orbifolds
G. Ferretti, P. Salomonson, D. Tsimpis
We consider type IIB string theory on a seven dimensional orbifold with holonomy in G2. The motivation is to use D1-branes as probes of the geometry. The low energy theory on the D…
Environmental effects in galaxies: Molecular Gas, Star Formation, and Activity
Duilia F. de Mello, Tommy Wiklind, Marcio A. G. Maia
In order to study whether there is any correlation between nuclear activities, gas content, and the environment where galaxies reside, we have obtained optical and millimetric spec…
Environmental Effects in Galaxies: The Data
Duilia F. de Mello, Marcio A. G. Maia, Tommy Wiklind
We present optical and millimetric data for 47 intermediate Hubble type spiral galaxies located either in dense environments or in the field. We compare correlations between global…
Superfield algorithms for topological field theories
Igor Batalin, Robert Marnelius
A superfield algorithm for master actions of a class of gauge field theories including topological ones in arbitrary dimensions is presented generalizing a previous treatment in tw…
Many-body spectrum and particle localization in quantum dots and finite rotating Bose condensates
M. Manninen, S. Viefers, M. Koskinen +1
The yrast spectra (i.e. the lowest states for a given total angular momentum) of quantum dots in strong magnetic fields, are studied in terms of exact numerical diagonalization and…