508 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Sapienza University of RomeIT203 papers
- Centre National de la Recherche ScientifiqueFR156 papers
- Deutsches Elektronen-Synchrotron DESYDE152 papers
- European Organization for Nuclear ResearchCH147 papers
- Universität HamburgDE147 papers
- Princeton UniversityUS145 papers
- RWTH Aachen UniversityDE144 papers
- Eötvös Loránd UniversityHU143 papers
- Rutgers, The State University of New JerseyUS143 papers
- Tata Institute of Fundamental ResearchIN143 papers
- University of California San DiegoUS143 papers
- University of Wisconsin–MadisonUS143 papers
12 papers · 1 filter
Multi-level algorithms for modularity clustering
Andreas Noack, Randolf Rotta
Modularity is one of the most widely used quality measures for graph clusterings. Maximizing modularity is NP-hard, and the runtime of exact algorithms is prohibitive for large gra…
Target mass and finite corrections to diffractive deeply inelastic scattering
J. Blümlein, D. Robaschik, B. Geyer
The quantum field theoretic treatment of inclusive deep--inelastic diffractive scattering given in a previous paper \cite{BGR2006} is discussed in detail using an equivalent formul…
AG Codes from Polyhedral Divisors
Nathan Ilten, Hendrik Süß
A description of complete normal varieties with lower dimensional torus action has been given by Altmann, Hausen, and Suess, generalizing the theory of toric varieties. Considering…
Canonical divisors on T-varieties
Hendrik Süß
Generalising toric geometry we study compact varieties admitting lower dimensional torus actions. In particular we describe divisors on them in terms of convex geometry and give a…
Torus invariant divisors
Lars Petersen, Hendrik Süß
Using the language of polyhedral divisors and divisorial fans we describe invariant divisors on normal varieties X which admit an effective codimension one torus action. In this pi…
Fermi surface dichotomy on systems with fluctuating order
M. Grilli, G. Seibold, A. Di Ciolo +1
We investigate the effect of a dynamical collective mode coupled with quasiparticles at specific wavevectors only. This coupling describes the incipient tendency to order and produ…
Competing orders in FeAs layers
J. Lorenzana, G. Seibold, C. Ortix +1
Using the unrestricted Hartree-Fock approximation and Landau theory we identify possible phases competing with superconductivity in FeAs layers. We find that close to half-filling…
Modularity clustering is force-directed layout
Andreas Noack
Two natural and widely used representations for the community structure of networks are clusterings, which partition the vertex set into disjoint subsets, and layouts, which assign…
Charge instabilities and electron-phonon interaction in the Hubbard-Holstein model
A. Di Ciolo, J. Lorenzana, M. Grilli +1
We consider the Hubbard-Holstein model in the adiabatic limit to investigate the effects of electron-electron interactions on the electron-phonon coupling. To this aim we compute a…
Time-dependent Gutzwiller theory of pairing fluctuations in the Hubbard model
G. Seibold, F. Becca, J. Lorenzana
We present a method to compute pairing fluctuations on top of the Gutzwiller approximation (GA). Our investigations are based on a charge-rotational invariant GA energy functional…
Nanosized superparamagnetic precipitates in cobalt-doped ZnO
Matthias Opel, Karl-Wilhelm Nielsen, Sebastian Bauer +6
The existence of semiconductors exhibiting long-range ferromagnetic ordering at room temperature still is controversial. One particularly important issue is the presence of seconda…
Slave-boson based configuration-interaction approach for the Hubbard model
G. Seibold
Based on the Kotliar-Ruckenstein slave-boson scheme we develop a configuration-interaction (CI) approach which is suitable to improve the energy of symmetry-broken saddle-point sol…