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
43 papers · 1 filter
Phase-matched second-harmonic generation in a ferroelectric liquid crystal waveguide
Valentina S. U. Fazio, S. T. Lagerwall, P. Busson +2
True phase-matched second-harmonic generation in a waveguide of crosslinkable ferroelectric liquid crystals is demonstrated. These materials allow the formation of macroscopically…
Nonlinear optical properties of a channel waveguide produced with crosslinkable ferroelectric liquid crystals
Valentina S. U. Fazio, S. T. Lagerwall, V. Zauls +4
A binary mixture of ferroelectric liquid crystals (FLCs) was used for the design of a channel waveguide. The FLCs possess two important functionalities: a chromophore with a high h…
Unipolar outflows and global meridional circulations in rotating accretion flows
Igor V. Igumenshchev
Using two-dimensional simulations of non-radiative viscous rotating black hole accretion flows, we show that the flows with alpha~0.1-0.3 self-organize to form stationary unipolar…
VLBI observations of two single dMe stars: spatial resolution and astrometry
M. R. Pestalozzi, A. O. Benz, J. E. Conway +1
We report on 3.6 cm VLA and VLBA observations of YZ CMi and AD Leo, two nearby dMe stars. We resolve YZ CMi and can fit a circular symmetrical gaussian component of FWHP of 0.98 +/…
Kondo Impurity in a Mesoscopic Ring: Charge Persistent Current
H. -P. Eckle, H. Johannesson, C. A. Stafford
We study the influence of a magnetic impurity or ultrasmall quantum dot on the charge persistent current of a mesoscopic ring. The system consists of electrons in a one-dimensional…
Vector solitons in (2+1) dimensions
Johan N. Malmberg, Andreas H. Carlsson, Dan Anderson +3
We address the problem of existence and stability of vector spatial solitons formed by two incoherently interacting optical beams in bulk Kerr and saturable media. We identify fami…
Self-Similar Accretion Flows with Convection
Ramesh Narayan, Igor V. Igumenshchev, Marek A. Abramowicz
We consider height-integrated equations of an advection-dominated accretion flow (ADAF), assuming that there is no mass outflow. We include convection through a mixing length forma…
Making sense of Physics in the first year of study
Shirley Booth, Ake Ingerman
We address the question "How do students make sense of Physics from the point of view of constituting physics knowledge?". A phenomenographic study is described as a result of whic…
Quantum Fluctuations and Dissipation in Thin Superconducting Wires
A. D. Zaikin, D. S. Golubev, A. van Otterlo +1
We investigate quantum fluctuations in thin superconducting wires. We demonstrate that quantum phase slips dominate the system behavior at low temperatures and are well in the meas…
Non-commutativity, Zero modes and D-brane Geometry
Supriya Kar
The non-commutative geometry is revisited from the perspective of a generalized D p-brane. In particular, we analyze the open bosonic string world-sheet description and show that a…
Coupled-mode theory for Bose-Einstein condensates
Elena A. Ostrovskaya, Yuri S. Kivshar, Mietek Lisak +3
We apply the concepts of nonlinear guided-wave optics to a Bose-Einstein condensate (BEC) trapped in an external potential. As an example, we consider a parabolic double-well poten…
Parametric Excitation of Alfven Waves by Gravitational Radiation
M. Servin, G. Brodin, M. Bradley +1
We consider the parametric excitation of Alfven waves by gravitational radiation propagating on a Minkowski background, parallel to an external magnetic field. As a starting point,…
Two-Species Reaction-Diffusion System with Equal Diffusion Constants: Anomalous Density Decay at Large Times
Zoran Konkoli, Henrik Johannesson
We study a two-species reaction-diffusion model where A+A->0, A+B->0 and B+B->0, with annihilation rates lambda0, delta0 > lambda0 and lambda0, respectively. The initial particle c…
In-plane fluxon in layered superconductors with arbitrary number of layers
V. M. Krasnov
I derive an approximate analytic solution for the in-plane vortex (fluxon) in layered superconductors and stacked Josephson junctions (SJJ's) with arbitrary number of layers. The v…
Collisional Ring Galaxies in Small Groups
Cathy Horellou
The probability of plunging orbits is enhanced in groups of galaxies and indeed, observations show that ring galaxies, which are believed to form when a galaxy passes through the c…
Necessary but Not Sufficient Conditions to Trigger Starburst. CO and HI Observations of Optically-Selected Interacting Galaxies
Cathy Horellou, Roy Booth, Bruno Karlsson
We present the analysis of a survey of atomic and molecular gas in interacting and merging galaxies (Horellou & Booth 1997). The sample is optically selected and contains all inter…
Open group transformations within the Sp(2)-formalism
Igor Batalin, Robert Marnelius
Previously we have shown that open groups whose generators are in arbitrary involutions may be quantized within a ghost extended framework in terms of the nilpotent BFV-BRST charge…
Linear and nonlinear waveguides induced by optical vortex solitons
Andreas H. Carlsson, Johan N. Malmberg, Dan Anderson +4
We study, numerically and analytically, linear and nonlinear waveguides induced by optical vortex solitons in a Kerr medium. Both fundamental and first-order guided modes are analy…
Scanning Tunneling Microscopy of a Luttinger Liquid
Sebastian Eggert
Explicit predictions for Scanning Tunneling Microscopy (STM) on interacting one-dimensional electron systems are made using the Luttinger liquid formalism. The STM current changes…
Dirac Equations, Light Cone Supersymmetry, and Superconformal Algebras
Lars Brink, P. Ramond
After a brief historical survey that emphasizes the role of the algebra obeyed by the Dirac operator, we examine an algebraic Dirac operator associated with Lie algebras and Lie al…
Magnetomechanics of mesoscopic wires
Sara Blom
We have studied the force in mesoscopic wires in the presence of an external magnetic field along the wire using a free electron model. We show that the applied magnetic field can…
Generalized Dirichlet Branes and Zero-modes
Supriya Kar
We investigate the effective dynamics of an arbitrary Dirichlet p-brane, in a path-integral formalism, by incorporating the massless excitations of closed string modes in open boso…
Current-Voltage Relations in d-wave Josephson Junctions: Effects of Midgap Interface States
T. Lofwander, G. Johansson, G. Wendin
We investigate the dc current-voltage characteristics of d-wave Josephson junctions, where the barrier at the interface may have arbitrary strength. Dividing the current into n-par…
Holomorphic factorization of correlation functions in (4k+2)-dimensional (2k)-form gauge theory
Mans Henningson, Bengt E. W. Nilsson, Per Salomonson
We consider a free (2 k)-form gauge-field on a Euclidean (4 k + 2)-manifold. The parameters needed to specify the action and the gauge-invariant observables take their values in sp…