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In low energy atom-surface scattering, it is possible for the atom to be reflected in a region of attractive potential with no classical turning point. This phenomenon has come to be known as quantum reflection and it can reduce the…

原子物理 · 物理学 2023-11-28 A. L. Harris

In the limit where partons become collinear to each other, scattering amplitudes factorize into a product of universal, process-independent building blocks and scattering amplitudes involving fewer partons. We compute these universal…

高能物理 - 唯象学 · 物理学 2024-08-07 Xin Guan , Franz Herzog , Yao Ma , Bernhard Mistlberger , Adi Suresh

Quantum transport properties in quantum Hall wires in the presence of spatially correlated random potential are investigated numerically. It is found that the potential correlation reduces the localization length associated with the edge…

介观与纳米尺度物理 · 物理学 2009-11-13 Tohru Kawarabayashi , Yoshiyuki Ono , Tomi Ohtsuki , Stefan Kettemann , Alexander Struck , Bernhard Kramer

Backward stimulated Raman scattering is a three-wave coupling instability requiring the matching of an incoming pump light wave to a scattered light wave and electron plasma wave. It can be harmful to laser-driven inertial confinement…

等离子体物理 · 物理学 2024-07-24 David Rhys Blackman , Vladimir Tikhonchuk , Ondrej Klimo , Stefan Weber

We numerically investigate the effects of disorder on the quantum Hall effect (QHE) and the quantum phase transitions in silicene based on a lattice model. It is shown that for a clean sample, silicene exhibits an unconventional QHE near…

强关联电子 · 物理学 2017-12-15 Y. L. Liu , G. X. Luo , N. Xu , H. Y. Tian , C. D. Ren

We connect quantum compact graphs with infinite leads, and turn them into scattering systems. We derive an exact expression for the scattering matrix, and explain how it is related to the spectrum of the corresponding closed graph. The…

混沌动力学 · 物理学 2007-05-23 Tsampikos Kottos , Holger Schanz

We consider the effects of decoherence on Landau-Zener crossings encountered in a large-scale adiabatic-quantum-computing setup. We analyze the dependence of the success probability, i.e. the probability for the system to end up in its new…

量子物理 · 物理学 2007-05-23 S. Ashhab , J. R. Johansson , Franco Nori

In this paper we perform a numerical study of the tranverse expansion of hadronic scattering amplitudes in the dipole picture of high energy QCD. We go beyond the mean field approximation by including fluctuations and also wave function…

高能物理 - 唯象学 · 物理学 2008-11-26 Emil Avsar

Theoretical description of inclusive tau lepton hadronic decay is performed in the framework of Dispersive approach to QCD. The significance of effects due to hadronization is demonstrated. The approach on hand is capable of describing…

高能物理 - 唯象学 · 物理学 2012-01-18 A. V. Nesterenko

The angular and frequency correlation functions of the transmission coefficient for light propagation through a strongly scattering amplifying medium are considered. It is found that just as in the case of an elastic scattering medium the…

介观与纳米尺度物理 · 物理学 2009-10-31 A. A. Burkov , A. Yu. Zyuzin

This paper describes the qualitative effects of LGS spot elongation and Rayleigh scattering on ALFA wavefront sensor images. An analytical model of Rayleigh scattering and a numerical model of laser plume generation at the altitude of the…

天体物理学 · 物理学 2007-05-23 E. Viard , F. Delplancke , N. Hubin , N. Ageorges , R. Davies

Quantum cascade lasers (QCLs) are becoming a key tool for plenty of applications, from the mid-infrared (mid-IR) to the THz range. Progress in related areas, such as the development of ultra-low-loss crystalline microresonators, optical…

The mixing of states with {\it opposite chirality} in quantum Hall system is shown to have delocalization effect. It is possible that extended states may form bands because of this mixing, as is shown through a numerical calculation on a…

介观与纳米尺度物理 · 物理学 2009-11-11 Gang Xiong , Shi-Dong Wang , Qian Niu , Yupeng Wang , X. C. Xie , De-Cheng Tian , X. R. Wang

The splitting processes of bremsstrahlung and pair production in a medium are coherent over large distances in the very high energy limit, which leads to a suppression known as the Landau-Pomeranchuk-Migdal (LPM) effect. In this paper, we…

高能物理 - 唯象学 · 物理学 2016-11-23 Peter Arnold , Han-Chih Chang , Shahin Iqbal

Landau level spectroscopy has been employed to probe the electronic structure of the valence band in a series of p-type HgTe/HgCdTe quantum wells with both normal and inverted ordering of bands. We find that the standard axial-symmetric…

Double-layer electron systems in the quantum Hall regime have excitonic condensate ground states when the layers are close together and the total Landau level filling factor is close to an odd integer. In this paper we discuss the…

介观与纳米尺度物理 · 物理学 2007-05-23 Allan H. MacDonald , Anton A. Burkov , Yogesh N. Joglekar , Enrico Rossi

Elastic light scattering by low-dimensional semiconductor objects is investigated theoretically. The differential cross section of resonant light scattering on excitons in quantum dots is calculated. The polarization and angular…

介观与纳米尺度物理 · 物理学 2009-11-11 I. G. Lang , L. I. Korovin , S. T. Pavlov

The linewidth of an atom laser can be limited by excitation of higher energy modes in the source Bose-Einstein condensate, energy shifts in that condensate due to the atomic interactions, or phase diffusion of the lasing mode due to those…

量子物理 · 物理学 2013-05-29 Mattias T. Johnsson , Joseph J. Hope

We consider small--angle electron--positron scattering in Quantum Electrodynamics. Leading logarithmic contributions to the cross--section are explicitly calculated to three loop. Next--to--leading terms are exactly computed to two loop.…

高能物理 - 唯象学 · 物理学 2009-10-28 A. B. Arbuzov , V. S. Fadin , E. A. Kuraev , L. N. Lipatov , N. P. Merenkov , L. G. Trentadue

We consider the collinear limit of QCD amplitudes at one-loop order, and their factorization properties directly in colour space. These results apply to the multiple collinear limit of an arbitrary number of QCD partons, and are a basic…

高能物理 - 唯象学 · 物理学 2009-11-10 German Rodrigo , Stefano Catani , Daniel de Florian , Werner Vogelsang