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Regular arrays of two-level emitters at distances smaller that the transition wavelength collectively scatter, absorb and emit photons. The strong inter-particle dipole coupling creates large energy shifts of the collective delocalized…

量子物理 · 物理学 2021-07-28 Raphael Holzinger , Mariona Moreno-Cardoner , Helmut Ritsch

Releasing shell-shaped Bose-Einstein condensates from their confinement produces a spherically symmetric density distribution characterized by concentric ripples surrounding a central peak. Here we investigate how a vortex-antivortex dipole…

量子气体 · 物理学 2026-04-23 A. Tononi

We carried out three-dimensional simulations, with about 1.4 million particles, of phase segregation in a low density binary fluid mixture, described mesoscopically by energy and momentum conserving Boltzmann-Vlasov equations. Using a…

patt-sol · 物理学 2008-02-03 S. Bastea , J. L. Lebowitz

We derive an evolution equation for the generating functional which accounts for processes for both gluon emission and recombination. In terms of color dipoles, the kernel of this equation describes evolution as a classical branching…

高能物理 - 唯象学 · 物理学 2009-11-11 Eugene Levin , Michael Lublinsky

We calculate the one-loop corrections to dihadron production in Deep Inelastic Scattering (DIS) at small x using the Color Glass Condensate formalism. We show that all UV and soft singularities cancel while the collinear divergences are…

高能物理 - 唯象学 · 物理学 2022-10-12 Filip Bergabo , Jamal Jalilian-Marian

We consider the two-dimensional two-component plasma, or Coulomb gas, consisting of $N$ positive and $N$ negative charges with logarithmic interaction. We introduce a suitable regularization of the interaction by smearing the charges over a…

数学物理 · 物理学 2024-10-03 Jeanne Boursier , Sylvia Serfaty

The structure of a finite particle cluster is typically determined by total energy minimization. Here we consider the case where a cluster of soft sphere dipoles becomes active, i.e. when the individual particles exhibit an additional…

软凝聚态物质 · 物理学 2015-07-03 Andreas Kaiser , Katarina Popowa , Hartmut Löwen

We study clustering in a stochastic system of particles sliding down a fluctuating surface in one and two dimensions. In steady state, the density-density correlation function is a scaling function of separation and system size.This scaling…

统计力学 · 物理学 2009-11-13 Mustansir Barma

Employing the representation of the experimental data on deep inelastic electron-proton scattering (DIS) in the color-dipole picture (CDP), we determine the gluon distribution of the proton at small Bjorken $x$. At sufficiently large…

高能物理 - 唯象学 · 物理学 2025-12-02 G. R. Boroun , M. Kuroda , Dieter Schildknecht

The colour dipole cross section is the principal quantity in the lightcone $s$-channel description of the diffractive scattering. Recently we have shown that the dipole cross section satisfies the generalized BFKL equation. In this paper we…

高能物理 - 理论 · 物理学 2009-10-28 N. N. Nikolaev , B. G. Zakharov , V. R. Zoller

We present a detailed analysis (including redshift tomography) of the cosmic dipoles in the Keck+VLT quasar absorber and in the Union2 SnIa samples. We show that the fine structure constant cosmic dipole obtained through the Keck+VLT quasar…

宇宙学与河外天体物理 · 物理学 2013-05-30 Antonio Mariano , Leandros Perivolaropoulos

Magnetic nanoparticles in a colloidal solution self-assemble in various aligned structures, which has a profound influence on the flow behavior. However, the precise role of the microstructure in the development of the rheological response…

软凝聚态物质 · 物理学 2017-04-25 Dmitry Zablotsky , Elmars Blums , Hans J. Herrmann

This talk reviews briefly some of the main results of the small-x dipole formulation with regards to unitarity corrections. It illustrates the correspondence between unitarity and saturation corrections in the dipole approach and multiple…

高能物理 - 唯象学 · 物理学 2007-05-23 G. P. Salam

We propose a new method to implement the running coupling constant in the JIMWLK equation, imposing the scale dependence on the correlation function of the random noise in the Langevin formulation. We interpret this scale choice as the…

高能物理 - 唯象学 · 物理学 2013-03-29 T. Lappi , H. Mäntysaari

Using the leading-twist approximation of the Wilson operator product expansion with "frozen" and analytic versions of the strong-coupling constant, we show that the Bessel-inspired behavior of the structure function F_2 and its slope\break…

高能物理 - 唯象学 · 物理学 2009-10-02 G. Cvetic , A. Yu. Illarionov , B. A. Kniehl , A. V. Kotikov

We study the internal structure of a two-dimensional dilatonic evaporating black hole, based on the CGHS model. At the semiclassical level, a (weak) spacelike singularity was previously found to develop inside the black hole. We employ here…

广义相对论与量子宇宙学 · 物理学 2014-11-21 Dana Levanony , Amos Ori

We derive the DGLAP and BFKL evolution equations in the N=4 supersymmetric gauge theory in the next-to-leading approximation. The eigenvalue of the BFKL kernel in this model turns out to be an analytic function of the conformal spin |n|.…

高能物理 - 唯象学 · 物理学 2010-04-05 A. V. Kotikov , L. N. Lipatov

The BFKL and the unified angular-ordered equations are solved to determine the gluon distribution at small $x$. The impact of kinematic constraints is investigated. Predictions are made for observables sensitive to the gluon at small $x$.…

高能物理 - 唯象学 · 物理学 2009-10-28 J. Kwiecinski , A. D. Martin , P. J. Sutton

We investigate numerically the time evolution of velocity and magnetic field fluctuations in a coronal loop, focusing on the dynamics due to both phase mixing and turbulent cascade. The intensity, doppler velocity and non-thermal broadening…

We apply the time-dependent local density approximation (TDLDA) to calculate dipole excitations in small carbon clusters. A strong low-frequency mode is found which agrees well with observation for clusters C_n with n in the range 7-15. The…

化学物理 · 物理学 2009-10-30 K. Yabana , G. F. Bertsch