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
37 papers · 1 filter
Electron-phonon interactions on a single-branch quantum Hall edge
O. Heinonen, Sebastian Eggert
We consider the effect of electron-phonon interactions on edge states in quantum Hall systems with a single edge branch. The presence of electron-phonon interactions modifies the s…
Fluctuating loops and glassy dynamics of a pinned line in two dimensions
Anders B. Eriksson, Jari M. Kinaret, Lev V. Mikheev
We represent the slow, glassy equilibrium dynamics of a line in a two-dimensional random potential landscape as driven by an array of asymptotically independent two-state systems,…
Gauged supersymmetric WZNW model using the BRST approach
Henric Rhedin
We consider the supersymmetric WZNW model gauged in a manifestly supersymmetric way. We find the BRST charge and the necessary condition for nilpotency. In the BRST framework the m…
Excess Resistance Effect in a Normal Metal Contacting a Superconductor
A. Kadigrobov, R. Shekhter, M. Jonson
In relatively pure normal samples contacting a superconductor we consider the excess resistance effect (that is a decrease of the total electrical resistance of the sample after tr…
Boundary Effects on Spectral Properties of Interacting Electrons in One Dimension
Sebastian Eggert, Henrik Johannesson, Ann Mattsson
The single electron Green's function of the one-dimensional Tomonaga-Luttinger model in the presence of open boundaries is calculated with bosonization methods. We show that the cr…
Giant Josephson current through a single bound state in a superconducting tunnel junction
G. Wendin, V. S. Shumeiko
We study the microscopic structure of the Josephson current in a single-mode tunnel junction with a wide quasiclassical tunnel barrier. In such a junction each Andreev bound state…
Thermal Instability of Advection-Dominated Disks against Local Perturbations
Shoji Kato, Marek A. Abramowicz, Xingming Chen
Thermal instability is examined for advection-dominated one-temperature accretion disks. We consider axisymmetric perturbations with short wavelength in the radial direction. The v…
Is the Accretion Flow in NGC 4258 Advection-dominated?
J. -P. Lasota, M. A. Abramowicz, X. Chen +3
The mass of the central black hole in the active galaxy NGC 4258 (M106) has been measured to be $M=3.6\times10^7\Msun$ (Miyoshi et al. 1995). The Eddington luminosity corresponding…
General Triplectic Quantization
Igor Batalin, Robert Marnelius
The general structure of the Sp(2) covariant version of the field-antifield quantization of general constrained systems in the Lagrangian formalism, the so called triplectic quanti…
Thermal Fermionic Dispersion Relations in a Magnetic Field
Per Elmfors, David Persson, Bo-Sture Skagerstam
The thermal self-energy of an electron in a static uniform magnetic field is calculated to first order in the fine structure constant and to all orders in . We use two…
Coulomb Blockade-Effects on Quantization of Charge and Persistent Current in a Luttinger-Liquid Ring
I. V. Krive, P. Sandström, R. I. Shekhter +1
We show that in a ring-shaped Luttinger Liquid (LL) in contact with an electron reservoir --- the chemical potential in the ring being controlled by a gate voltage --- both t…
Accretion discs around black holes: two dimensional, advection cooled flows
Igor V. Igumenshchev, Xingming Chen, Marek A. Abramowicz
Two-dimensional accretion flows near black holes have been investigated by time-dependent hydrodynamical calculations. We assume that the flow is axisymmetric and that radiative lo…
The Observational Appearance of Slim Accretion Disks
Ewa Szuszkiewicz, Matthew A. Malkan, Marek A. Abramowicz
We reexamine the hypothesis that the optical/UV/soft X-ray continuum of Active Galactic Nuclei is thermal emission from an accretion disk. Previous studies have shown that fitting…
Excess Noise in Biased Superconducting Weak Links
J. P. Hessling, V. S. Shumeiko, Yu. M. Galperin +1
Non-equilibrium excess noise of a short quasi one-dimensional constriction between two superconductors is considered. A general expression for the current-current correlation funct…
Gauge fixing, co-BRST and time evolution in QED
Géza Fülöp
We consider BRST-invariant inner product states for quantum electrodynamics constructed from trivial BRST-invariant states and a gauge regulator. The trivial states are products of…
Low Energy Dynamics of Monopoles in N=2 SYM with Matter
Martin Cederwall, Gabriele Ferretti, Bengt E. W. Nilsson +1
We derive, for $N\is2$ super-Yang--Mills with gauge group and massless matter, the supersymmetric quantum mechanical models describing the time evolution of multi-monopole…
An Accurate Determination of the Exchange Constant in Sr_2CuO_3 from Recent Theoretical Results
Sebastian Eggert
Data from susceptibility measurements on Sr_2CuO_3 are compared with recent theoretical predictions for the magnetic susceptibility of the antiferromagnetic spin-1/2 Heisenberg cha…
Gauge fixing and coBRST
Géza Fülöp, Robert Marnelius
It has previously been shown that a BRST quantization on an inner product space leads to physical states of the form |ph>=e^[Q, ψ] |ϕ> where |ϕ> is either a trivially BRST invarian…
Magnetic Impurity in a Luttinger Liquid: A Conformal Field Theory Approach
Per Frojdh, Henrik Johannesson
We study the low-temperature properties of a spin-\onehalf\ magnetic impurity coupled to a one-dimensional interacting electron system. Using the newly developed formalism by Affle…
Interacting Electrons and Localized Spins: Exact Results from Conformal Field Theory
Per Frojdh, Henrik Johannesson
We give a brief review of the Kondo effect in a one-dimensional interacting electron system, and present exact results for the impurity thermodynamic response based on conformal fi…
The Ba 4d-f giant dipole resonance as a probe of the structure of endohedral Ba@C_n metallofullerenes
Jarek Luberek, Goran Wendin
We calculate the x-ray absorption near edge structure (XANES) modulating the Ba 4d-photoabsorption cross section - the giant dipole resonance - centered around 110 eV photon energy…
MICROWAVE-INDUCED RESONANT REFLECTION AND LOCALIZATION OF BALLISTIC ELECTRONS IN QUANTUM MICROCHANNELS
L. Y. Gorelik, M. Jonson, R. I. Shekhter
We show that electron transport in a ballistic microchannel supporting both propagating and reflected modes can be completely blocked by applying a microwave electromagnetic field.…
Kondo Effect in a Luttinger Liquid: Exact Results from Conformal Field Theory
Per Frojdh, Henrik Johannesson
We report on exact results for the low-temperature thermodynamics of a spin- magnetic impurity coupled to a one-dimensional interacting electron system. By using bound…
Impurities in S=1/2 Heisenberg Antiferromagnetic Chains: Consequences for Neutron Scattering and Knight Shift
Sebastian Eggert, Ian Affleck
Non-magnetic impurities in an S=1/2 Heisenberg antiferromagnetic chain are studied using boundary conformal field theory techniques and finite-temperature quantum Monte Carlo simul…