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
27 papers · 1 filter
On higher-dimensional loop algebras, pseudodifferential operators and Fock space realizations
Anders Westerberg
We discuss a previously discovered [hep-th/9401027] extension of the infinite-dimensional Lie algebras Map(M,g) which generalizes the Kac-Moody algebras in 1+1 dimensions and the M…
On the morphology of accretion flows with small non-zero specific angular momentum
Xingming Chen, Ronald E. Taam, Marek A. Abramowicz +1
The morphology of adiabatic accretion flows with small non-zero specific angular momentum has been investigated in the axisymmetric and nonviscous limit. For an initial state chara…
Ordering effect of Coulomb interaction in ballistic double-ring systems
C. M. Canali, W. Stephan, L. Y. Gorelik +2
We study a model of two concentric onedimensional rings with incommensurate areas and , in a constant magnetic field. The two rings are coupled by a nonhomogeneous inter…
The Dirichlet Super-p-Branes in Ten-Dimensional Type IIA and IIB Supergravity
Martin Cederwall, Alexander von Gussich, Bengt E. W. Nilsson +2
We give the full supersymmetric and kappa-symmetric actions for the Dirichlet p-branes, including their coupling to background superfields of ten-dimensional type IIA and IIB super…
Disk-Corona Models and X-ray Emission from Seyfert Galaxies
Laura Maraschi, Francesco Haardt
The current status of understanding of the X-ray emission from Seyfert galaxies involves Comptonization of soft photons by hot subrelativistic electrons. After briefly reviewing th…
The Dirichlet Super-Three-Brane in Ten-Dimensional Type IIB Supergravity
Martin Cederwall, Alexander von Gussich, Bengt E. W. Nilsson +1
We give the full supersymmetric and kappa-symmetric action for the Dirichlet three-brane, including its coupling to background superfields of ten-dimensional type IIB supergravity.
Conformations of Linear DNA
Boris Fain, Joseph Rudnick, Stellan Ostlund
We examine the conformations of a model for under- and overwound DNA. The molecule is represented as a cylindrically symmetric elastic string subjected to a stretching force and to…
Scattering theory of superconductive tunneling in quantum junctions
V. S. Shumeiko, E. N. Bratus', G. Wendin
We present a consistent theory of superconductive tunneling in single-mode junctions within a scattering formulation of Bogoliubov-de Gennes quantum mechanics. Both dc Josephson ef…
ASCA observations of the galactic bulge hard x-ray source GRS 1758--258
S. Mereghetti, D. I. Cremonesi, F. Haardt +3
GRS 1758-258 is one of the few persistent hard X-ray emitters (E>100 keV) in the Galaxy. Using the ASCA satellite, we have obtained the first detailed data on GRS 1758-258 in the 1…
X-ray variability and correlations in the two phase disk-corona model for Seyfert galaxies
Francesco Haardt, Laura Maraschi, Gabriele Ghisellini
We discuss in detail the broad band X-ray variability expected in Seyfert galaxies in the framework of a Compton cooled corona model. Variations in the optical depth tau of the cor…
Time evolution in general gauge theories defined on inner product spaces
Robert Marnelius
As previously shown BRST singlets |s> in a BRST quantization of general gauge theories on inner product spaces may be represented in the form |s>=e^{[Q, ψ]} |ϕ> where |ϕ> is either…
Superconformal Ward Identities and N=2 Yang-Mills Theory
P. S. Howe, P. C. West
A reformulation of the superconformal Ward identities that combines all the superconformal currents and the associated parameters in one multiplet is given for theories with rigid…
On the Dirac-Born-Infeld Action for D-branes
Martin Cederwall, Alexander von Gussich, Aleksandar Mikovic +2
In this note, we consider the reformulation of the Dirac-Born-Infeld action for a Dirichlet p-brane in Brink-Di Vecchia-Howe-Tucker form, i.e., including an independent non-propaga…
Advection Dominated Accretion Flows Around Kerr Black Holes
M. A. Abramowicz, X. -M. Chen, M. Granath +1
We derive all relevant equations needed for constructing a global general relativistic model of advectively cooled, very hot, optically thin accretion disks around black holes and…
Advection-dominated accretion: global transonic solutions
Xingming Chen, Marek A. Abramowicz, Jean-Pierre Lasota
We obtained global transonic solutions representing optically thin advection-dominated accretion flow by solving the full set of differential equations describing such systems. We…
A class of ansatz wave functions for 1D spin systems and their relation to DMRG
Stefan Rommer, Stellan Ostlund
We investigate the density matrix renormalization group (DMRG) discovered by White and show that in the case where the renormalization eventually converges to a fixed point the DMR…
Spatial Structure in Mode Population Induced by Coherent Pumping in a Ballistic Quantum Channel
Ola Tageman, L. Y. Gorelik, R. I. Shekter +1
We predict a spatially varying mode population to appear in a GaAs/AlGaAs-2DEG ballistic quantum channel pumped by a THz-field. If a resonant coupling between two modes is suddenly…
Two-loop Back-reaction in 2D Dilaton Gravity
A. Mikovic, V. Radovanovic
We calculate the two-loop quantum corrections, including the back-reaction of the Hawking radiation, to the one-loop effective metric in a unitary gauge quantization of the CGHS mo…
Light curve of a source orbiting around a black hole: A fitting-formula
V. Karas
A simple, analytical fitting-formula for a photometric light curve of a source of light orbiting around a black hole is presented. The formula is applicable for sources on a circul…
Finite Deformations of Conformal Field Theories Using Analytically Regularized Connections
Alexander von Gussich, Per Sundell
We study some natural connections on spaces of conformal field theories using an analytical regularization method. The connections are based on marginal conformal field theory defo…
Local structure study about Co in YBa(CuCo)O thin films using polarized XAFS
E. D. Bauer, F. Bridges, C. H. Booth +4
We have studied the local structure around Co in YBa(CuCo)O thin films with three different concentrations: x=0.07, 0.10, 0.17, and in a PrBa(Cu$_{1…
Numerical Evidence for Multiplicative Logarithmic Corrections from Marginal Operators
Sebastian Eggert
Field theory calculations predict multiplicative logarithmic corrections to correlation functions from marginally irrelevant operators. However, for the numerically most suitable m…
Persistent current in a one-dimensional ring of fractionally charged "exclusons''
I. V. Krive, P. Sandström, R. I. Shekhter +1
The Aharonov-Bohm effect in a one-dimensional (1D) ring containing a gas of fractionally charged excitations is considered. It is shown that the low temperature behavior of the sys…
Explicit gauge invariant quantization of the Schwinger model on a circle in the functional Schrödinger representation
Joakim Hallin, Per Liljenberg
We solve the Schwinger model on a circle by first finding the explicit groundstate functional(s). Having done this, we give the structure of the Hilbert space and derive bosonizati…