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We review the effects of Coulomb correlation on the linear and non-linear optical properties of semiconductor quantum wires, with emphasis on recent results for the bound excitonic states. Our theoretical approach is based on generalized…

材料科学 · 物理学 2009-10-30 G. Goldoni , F. Rossi , E. Molinari

The classical (i.e. non-quantum) equilibrium statistical mechanics of a Coulomb fluid living on a pseudosphere (an infinite surface of constant negative curvature) is considered. The Coulomb fluid occupies a large disk communicating with a…

统计力学 · 物理学 2009-11-10 B. Jancovici , G. Téllez

The anomalous Hall effect in a multiband tight-binding model is numerically studied taking into account both elastic scattering by disorder and inelastic scattering by the electron-phonon interaction. The Hall conductivity is obtained as a…

强关联电子 · 物理学 2012-07-19 Atsuo Shitade , Naoto Nagaosa

Using grand-canonical Monte Carlo simulations we investigate the impact of charged walls on the crystallization properties of charged colloidal suspensions confined between these walls. The investigations are based on an effective model…

软凝聚态物质 · 物理学 2015-05-18 S. Grandner , S. H. L. Klapp

We consider a metallic wire coupled to two metallic electrodes via two junctions placed nearby. A bias voltage applied to one of such junctions alters the electron distribution function in the wire in the vicinity of another junction thus…

强关联电子 · 物理学 2012-03-09 D. S. Golubev , A. D. Zaikin

We develop a general formalism to investigate the effect of quenched fixed charge disorder on effective electrostatic interactions between charged surfaces in a one-component (counterion-only) Coulomb fluid. Analytical results are…

软凝聚态物质 · 物理学 2009-11-11 Ali Naji , Rudolf Podgornik

We present a theory for Coulomb drag between two mesoscopic systems. Our formalism expresses the drag in terms of scattering matrices and wave functions, and its range of validity covers both ballistic and disordered systems. The…

介观与纳米尺度物理 · 物理学 2007-05-23 Niels Asger Mortensen , Karsten Flensberg , Antti-Pekka Jauho

We have used the locally self-consistent Green's function (LSGF) method in supercell calculations to establish the distribution of the net charges assigned to the atomic spheres of the alloy components in metallic alloys with different…

材料科学 · 物理学 2009-11-07 A. V. Ruban , H. L. Skriver

The perturbed conformal field theories corresponding to the massive Symmetric Space sine-Gordon soliton theories are identified by calculating the central charge of the unperturbed conformal field theory and the conformal dimension of the…

高能物理 - 理论 · 物理学 2009-10-31 O. A. Castro Alvaredo , J. L. Miramontes

To describe nuclear matter at high temperature and high baryon density appropriate for RHIC and LHC, an effective theory is proposed. Three developments underlie the effective theory: (1) relativistic mean field theory description of…

核理论 · 物理学 2009-09-25 M. M. Islam

Nuclear stopping in the heavy ion collisions over a beam energy range from SIS, AGS up to SPS is studied in the framework of the modified UrQMD transport model, in which mean field potentials of both formed and "pre-formed" hadrons (from…

核理论 · 物理学 2010-04-14 Ying Yuan , Qingfeng Li , Zhuxia Li , Fu-Hu Liu

A study of the temperature (T) and density (n_s) dependence of conductivity \sigma(n_s,T) of a highly disordered, two-dimensional (2D) electron system in Si demonstrates scaling behavior consistent with the existence of a metal-insulator…

无序系统与神经网络 · 物理学 2015-05-06 Ping V. Lin , Dragana Popović

Under assumption of singular behavior of invariant charge alpha_s(q^2) at q^2 sim 0 and of large q^2 behavior, corresponding to the perturbation theory up to four loops, a procedure is considered of smooth matching the beta-function at a…

高能物理 - 唯象学 · 物理学 2009-11-10 A. I. Alekseev , B. A. Arbuzov

We examine some physically relevant implications of potentially dangerous charge and color breaking minima for supersymmetric models. First, we analyze the stability of the corresponding constraints with respect to variations of the initial…

高能物理 - 唯象学 · 物理学 2008-11-26 J. A. Casas , A. Lleyda , C. Muñoz

The effect of the Coulomb-interaction on persistent currents in disordered mesoscopic metal rings threaded by a magnetic flux $\phi$ is studied numerically. We use the simplest form of ``self-consistent'' Hartree theory, where the spatial…

介观与纳米尺度物理 · 物理学 2009-10-28 Axel Voelker , Peter Kopietz

In nuclear collisions the incident protons generate a Coulomb field which acts on produced charged particles. The impact of these interactions on charged pion transverse-mass and rapidity spectra, as well as on pion-pion momentum…

核实验 · 物理学 2022-09-21 J. Adamczewski-Musch , O. Arnold , C. Behnke , A. Belounnas , A. Belyaev , J. C. Berger-Chen , A. Blanco , C. Blume , M. Böhmer , P. Bordalo , S. Chernenko , L. Chlad , I. Ciepał , C. Deveaux , J. Dreyer , E. Epple , L. Fabbietti , O. Fateev , P. Filip , P. Fonte , C. Franco , J. Friese , I. Fröhlich , T. Galatyuk , J. A. Garzon , R. Gernhäuser , M. Golubeva , R. Greifenhagen , F. Guber , M. Gumberidze , S. Harabasz , T. Heinz , T. Hennino , S. Hlavac , C. Höhne , R. Holzmann , A. Ierusalimov , A. Ivashkin , B. Kämpfer , T. Karavicheva , B. Kardan , I. Koenig , W. Koenig , M. Kohls , B. W. Kolb , G. Korcyl , G. Kornakov , F. Kornas , R. Kotte , A. Kugler , T. Kunz , A. Kurepin , A. Kurilkin , P. Kurilkin , V. Ladygin , R. Lalik , K. Lapidus , A. Lebedev , S. Linev , L. Lopes , M. Lorenz , T. Mahmoud , L. Maier , A. Malige , A. Mangiarotti , J. Markert , T. Matulewicz , S. Maurus , V. Metag , J. Michel , D. M. Mihaylov , S. Morozov , C. Müntz , R. Münzer , M. Nabroth , L. Naumann , K. Nowakowski , Y. Parpottas , M. Parschau , V. Pechenov , O. Pechenova , O. Petukhov , K. Piasecki , J. Pietraszko , W. Przygoda , K. Pysz , S. Ramos , B. Ramstein , N. Rathod , A. Reshetin , P. Rodriguez-Ramos , P. Rosier , A. Rost , A. Rustamov , A. Sadovsky , P. Salabura , T. Scheib , H. Schuldes , N. Schild , E. Schwab , F. Scozzi , F. Seck , P. Sellheim , I. Selyuzhenkov , J. Siebenson , L. Silva , U. Singh , J. Smyrski , Yu. G. Sobolev , S. Spataro , S. Spies , H. Ströbele , J. Stroth , C. Sturm , K. Sumara , O. Svoboda , M. Szala , P. Tlusty , M. Traxler , H. Tsertos , E. Usenko , V. Wagner , C. Wendisch , M. G. Wiebusch , J. Wirth , Y. Zanevsky , P. Zumbruch

We study integrable models for electrons in metals when the single particle spectrum is discrete. The electron-electron interactions are BCS-like pairing, Coulomb repulsion, and spin exchange coupling. These couplings are, in general,…

超导电性 · 物理学 2011-07-19 Luigi Amico , Antonio Di Lorenzo , Andreas Osterloh

The dissipation rate due to inelastic collisions between equally charged, insulating particles in a dilute granular medium is calculated. It is equal to the known dissipation rate for uncharged granular media multiplied by a Boltzmann-like…

统计力学 · 物理学 2007-05-23 Tim Scheffler , Dietrich E. Wolf

We theoretically investigate the anomalous Hall effect in a system of dense-packed ferromagnetic grains in the metallic regime. Using the formalism recently developed for the conventional Hall effect in granular metals, we calculate the…

介观与纳米尺度物理 · 物理学 2012-07-10 Hendrik Meier , Maxim Yu. Kharitonov , Konstantin B. Efetov

The dynamics and thermodynamics of melting in two-dimensional Coulomb clusters is revisited using molecular dynamics and Monte Carlo simulations. Several parameters are considered, including the Lindemann index, the largest Lyapunov…

原子与分子团簇 · 物理学 2007-05-23 E. Yurtsever , F. Calvo , D. J. Wales