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
84 papers · 1 filter
Self-compression and catastrophic collapse of photon bullets in vacuum
M. Marklund, B. Eliasson, P. K. Shukla
Photon-photon scattering, due to photons interacting with virtual electron-positron pairs, is an intriguing deviation from classical electromagnetism predicted by quantum electrody…
The non-Abelian tensor multiplet in loop space
Andreas Gustavsson
We introduce a non-Abelian tensor multiplet directly in the loop space associated with flat six-dimensional Minkowski space-time, and derive the supersymmetry variations for on-she…
Optical geometry analysis of the electromagnetic self-force
Sebastiano Sonego, Marek A. Abramowicz
We present an analysis of the behaviour of the electromagnetic self-force for charged particles in a conformally static spacetime, interpreting the results with the help of optical…
Quasispecies and recombination
Martin Nilsson Jacobi, Mats Nordahl
Recombination is introduced into Eigen's theory of quasispecies evolution. Comparing numerical simulations of the rate equations in the non-recombining and recombining cases show t…
Interaction effects between impurities in low dimensional spin-1/2 antiferromagnets
Fabrizio Anfuso, Sebastian Eggert
We are considering the interplay between several non-magnetic impurities in the spin-1/2 Heisenberg antiferromagnet in chains, ladders and planes by introducing static vacancies in…
Non-symmetric Jacobi and Wilson type polynomials
Lizhong Peng, Genkai Zhang
Consider a root system of type on the real line with general positive multiplicities. The Cherednik-Opdam transform defines a unitary operator from an -spac…
Quasi-Species and Aggregate Dynamics
Anders Eriksson, Olof Görnerup, Martin Nilsson Jacobi +1
At an early stage in pre-biotic evolution, groups of replicating molecules must coordinate their reproduction to form aggregated units of selection. Mechanisms that enable this to…
Approximation by point potentials in a magnetic field
Katerina Ozanova
We discuss magnetic Schrodinger operators perturbed by measures from the generalized Kato class. Using an explicit Krein-like formula for their resolvent, we prove that these opera…
Regularizations of products of residue and principal value currents
Håkan Samuelsson
We prove that the Coleff-Herrera residue current, corresponding to a pair of holomorphic functions defining a complete intersection, can be obtained as the unrestricted weak limit…
Nature of Chemisorption on Titanium Carbide and Nitride
Carlo Ruberto, Aleksandra Vojvodic, Bengt I. Lundqvist
Extensive density-functional calculations are performed to understand atomic chemisorption on the TiC(111) and TiN(111) surfaces, in particular the calculated pyramid-shaped trends…
Trends in Atomic Adsorption on Titanium Carbide and Nitride
Aleksandra Vojvodic, Carlo Ruberto, Bengt I. Lundqvist
Extensive density-functional calculations on atomic chemisorption of H, B, C, N, O, F, Al, Si, P, S, and Cl on the polar TiC(111) and TiN(111) yield similar adsorption trends for t…
Nature of Adsorption on TiC(111)
Carlo Ruberto, Bengt I. Lundqvist
Extensive density-functional calculations are performed for chemisorption of atoms in the three first periods (H, B, C, N, O, F, Al, Si, P, S, and Cl) on the polar TiC(111) surface…
Integral representation with weights II, division and interpolation
Mats Andersson
Let be a -matrix of holomorphic functions that is generically surjective. We provide explicit integral representation of holomorphic such that , provided t…
Quantum size effect in Pb(100) films: the role of symmetry and implication for film growth
Dengke Yu, Matthias Scheffler, Mats Persson
We show from density-functional calculations that Pb(100) thin films exhibit quantum size effect with a bilayer periodicity in film energies, film relaxations, and work functions,…
Residue currents with prescribed annihilator ideals
Mats Andersson, Elizabeth Wulcan
Given a coherent ideal sheaf we construct locally a vector-valued residue current whose annihilator is precisely the given sheaf. In case is a complete intersection, $R…
Curvature of vector bundles associated to holomorphic fibrations
Bo Berndtsson
Let be a (semi)-positive line bundle over a Kahler manifold, , fibered over a complex manifold . Assuming the fibers are compact and non-singular we prove that the hermit…
Transport in metallic multi-island Coulomb blockade systems: A systematic perturbative expansion in the junction transparency
Björn Kubala, Göran Johansson, Jürgen König
We study electronic transport through metallic multi-island Coulomb-blockade systems. Based on a diagrammatic real-time approach, we develop a computer algorithm that generates and…
Spin-dependent Proximity Effects in d-wave Superconductor/Half-metal Heterostructures
Nobukatsu Yoshida, Mikael Fogelstrom
We report on mutual proximity effects in d-wave superconductor/half-metal heterostructures which correspond to systems composed of high-Tc cuprates and manganite materials. In our…
Knight shifts around vacancies in the 2D Heisenberg model
Fabrizio Anfuso, Sebastian Eggert
The local response to a uniform field around vacancies in the two-dimensional (2D) spin-1/2 Heisenberg antiferromagnet is determined by numerical quantum Monte Carlo simulations as…
Counting without sampling. New algorithms for enumeration problems using statistical physics
Antar Bandyopadhyay, David Gamarnik
We propose a new type of approximate counting algorithms for the problems of enumerating the number of independent sets and proper colorings in low degree graphs with large girth.…
Hopf Structures on Ambiskew Polynomial Rings
Jonas T. Hartwig
We derive necessary and sufficient conditions for an ambiskew polynomial ring to have a Hopf algebra structure of a certain type. This construction generalizes many known Hopf alge…
On a family of differential operators with the coupling parameter in the boundary condition
G. Rozenblum, M. Solomyak
We study a family of differential operators in two variables, depending on the coupling parameter that appears only in the boundary conditions. Our main concern is th…
Coherent instabilities of intense high-energy "white" charged-particle beams in the presence of nonlocal effects within the context of the Madelung fluid description
R. Fedele, D. Anderson, M. Lisak
A hydrodynamical description of coherent instabilities that take place in the longitudinal dynamics of a charged-particle coasting beam in a high-energy accelerating machine is pre…
Language embeddings that preserve staging and safety
Todd L. Veldhuizen
We study embeddings of programming languages into one another that preserve what reductions take place at compile-time, i.e., staging. A certain condition -- what we call a `Turing…