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The distribution function of transmitted charge through a double-barrier junction is studied at zero temperature and at small applied voltage. Both a semiclassical model, in which the transport is described by jump rates, and a quantum…

凝聚态物理 · 物理学 2009-10-28 M. J. M. de Jong

Photoelectron angular distributions of the two-photon ionization of neutral atoms are theoretically investigated. Numerical calculations of two-photon ionization cross sections and asymmetry parameters are carried out within the…

原子物理 · 物理学 2020-10-22 J. Hofbrucker , L. Eiri , A. V. Volotka , S. Fritzsche

Polarization of the cosmic microwave background, though not yet detected, provides a source of information about cosmological parameters complementary to temperature fluctuations. This paper provides a complete theoretical treatment of…

天体物理学 · 物理学 2014-10-13 Arthur Kosowsky

The effects of polarization transfer from the initial electron to the bremsstrahlung photon in electron-nucleus scattering (Bethe-Heitler process) are considered. The calculation is carried out without the assumption of smallness of the…

高能物理 - 唯象学 · 物理学 2025-09-25 Yu. M. Bystritskiy , V. A. Zykunov

We consider the evolution of relativistic perturbations in the Einstein-de Sitter cosmological model, including second-order effects. The perturbations are considered in two different settings: the widely used synchronous gauge and the…

天体物理学 · 物理学 2009-10-30 S. Matarrese , S. Mollerach , M. Bruni

Diffusion of electrons in two-dimensional disordered systems with spin-orbit interactions is investigated numerically. Asymptotic behaviors of the second moment of the wave packet and of the temporal auto-correlation function are examined.…

凝聚态物理 · 物理学 2009-10-28 Tohru Kawarabayashi , Tomi Ohtsuki

A model of Lorentz invariant random fluctuations in photon polarization is presented. The effects are frequency dependent and affect the polarization of photons as they propagate through space. We test for this effect by confronting the…

广义相对论与量子宇宙学 · 物理学 2014-11-20 Carlo Contaldi , Fay Dowker , Lydia Philpott

We investigate the angular distribution of electrons that are emitted in the ionization of hydrogen-like ions by twisted photons. Analysis is performed based on the first-order perturbation theory and the non-relativistic Schr\"odinger…

An exactly solvable model in heat conduction is considered. The $C$-integrable (i.e., change-of-variables-integrable) equation for second sound (i.e., heat wave) propagation in a thin, rigid dielectric heat conductor uniformly heated on its…

经典物理 · 物理学 2019-01-01 Ivan C. Christov

We consider the definition of unpolarized transverse-momentum-dependent parton distribution functions while staying on-the-light-cone. By imposing a requirement of identical treatment of two collinear sectors, our approach, compatible with…

高能物理 - 唯象学 · 物理学 2015-06-11 Miguel G. Echevarria , Ahmad Idilbi , Ignazio Scimemi

We consider electron-atom scattering in a circularly polarized laser field at sufficiently high electron energies, permitting to describe the scattering process by the first order Born approximation. Assuming the radiation field has…

原子物理 · 物理学 2013-03-07 Aurelia Cionga , Fritz Ehlotzky , Gabriela Zloh

Bremsstrahlung from relativistic electrons is considered under conditions when some transverse direction of momentum transfer is statistically preferred. It is shown that in the dipole approximation all the medium anisotropy effects can be…

高能物理 - 唯象学 · 物理学 2013-05-29 M. V. Bondarenco

We consider instability of the Friedmann world model to the second-order in perturbations. We present the perturbed set of equations up to the second-order in the Friedmann background world model with general spatial curvature and the…

天体物理学 · 物理学 2009-11-07 H. Noh , J. Hwang

A free-energy minimization approach is used to address the secular & dynamical instabilities & the bifurcations along sequences of rotating, self-gravitating fluid and stellar systems. Our approach stems from the Landau-Ginzburg theory of…

天体物理学 · 物理学 2009-10-22 D. M. Christodoulou , D. Kazanas , I. Shlosman , J. E. Tohline

We study the response to perturbation of non-Poisson dichotomous fluctuations that generate super-diffusion. We adopt the Liouville perspective and with it a quantum-like approach based on splitting the density distribution into a symmetric…

统计力学 · 物理学 2009-11-10 P. Allegrini , P. Grigolini , L. Palatella , A. Rosa , B. J. West

General properties of perturbed conformal field theory interacting with quantized Liouville gravity are considered in the simplest case of spherical topology. We discuss both short distance and large distance asymptotic of the partition…

高能物理 - 理论 · 物理学 2007-05-23 Al. Zamolodchikov

A relativistic analysis of the polarization properties of light elastically scattered by atomic hydrogen is performed, based on the Dirac equation and second order perturbation theory. The relativistic atomic states used for the…

We construct a perturbation theory which we conjecture to be free of the Coulomb-phase infrared divergence. This perturbation theory is developed for one of the simplest yet prototypical scattering amplitudes which would otherwise exhibit…

高能物理 - 理论 · 物理学 2025-03-21 Luke Lippstreu

The transport equations for polarized radiation transfer in non-Riemannian, Weyl-Cartan type space-times are derived, with the effects of both torsion and non-metricity included. To obtain the basic propagation equations we use the tangent…

广义相对论与量子宇宙学 · 物理学 2009-11-11 K. S. Cheng , T. Harko , X. Y. Wang

A conceptual problem of the electric-field mediated polarization correlations during a stochastic formation of polarization domain structure in ferroelectrics is addressed by using an exactly solvable stochastic model of polarization…

材料科学 · 物理学 2023-10-05 Yuri A. Genenko , Olga Y. Mazur , Leonid I. Stefanovich