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We review our theoretical approach to neutral current photon emission on nucleons and nuclei in the few-GeV energy region, relevant for neutrino oscillation experiments. These reactions are dominated by the weak excitation of the…

Nuclear Theory · Physics 2015-10-28 L. Alvarez-Ruso , J. Nieves , E. Wang

Twisted photons carrying orbital angular momentum, which have potential applications spanning diverse fields, have been extensively studied since the theoretical work of Allen \textit{et al}. in 1992. Various methods for direct producing…

Microscopic optical model potential results for reaction cross sections of proton elastic scattering are presented. The applications cover the 10-1000 MeV energy range and consider both stable and unstable nuclei. The study is based on…

Nuclear Theory · Physics 2008-11-26 H. F. Arellano , M. Girod

Due to coherence, there are strong electromagnetic fields of short duration in very peripheral collisions. They give rise to photon-photon and photon-nucleus collisions with a high flux up to an invariant mass region hitherto unexplored…

High Energy Physics - Phenomenology · Physics 2008-11-26 Gerhard Baur , Kai Hencken , Dirk Trautmann , Serguei Sadovsky , Yuri Kharlov

Recent measurements of the cosmic ray (CR) antiproton flux have been shown to challenge existing CR propagation models. It was shown that the reacceleration models designed to match secondary to primary nuclei ratios (e.g., boron/carbon)…

Astrophysics · Physics 2009-11-07 I. V. Moskalenko , A. W. Strong , S. G. Mashnik , J. F. Ormes

We calculate the distributions in recoil momenta and their energy distributions for the high energy non-relativistic double photoionization of helium caused by the quasifree mechanism of the process. The distributions obtain local maxima at…

Atomic Physics · Physics 2013-03-06 M. Ya. Amusia , E. G. Drukarev , E. Z. Liverts , A. I. Mikhailov

Electromagnetic fields carry momentum, which upon reflection on matter gives rise to the radiation pressure of photons. The radiation pressure has recently been utilized in cavity optomechanics for controlling mechanical motions of…

Quantum Physics · Physics 2020-03-17 Atsushi Noguchi , Rekishu Yamazaki , Yutaka Tabuchi , Yasunobu Nakamura

Electromagnetic signals are always composed of photons, though in the circuit domain those signals are carried as voltages and currents on wires, and the discreteness of the photon's energy is usually not evident. However, by coupling a…

We present angle resolved photoemission spectra for Cu(100) and Cu(111) singly crystals in normal emission geometry, taken at tightly spaced intervals for photon energies between 8 eV and 150 eV. This systematic collection of spectra gives…

Materials Science · Physics 2016-04-15 Friedrich Roth , Cosmin Lupulescu , Erik Darlatt , Alexander Gottwald , Wolfgang Eberhardt

We consider a non-spherical neutral particle spinning in free space and interacting with the electromagnetic quantum vacuum. When the rotation axis is orthogonal to the particle symmetry axis, the scattered field develops frequency…

A microscopic mechanism is proposed for understanding the rather large $k_T$ effects ($<k_T>$ = $1-1.5 GeV/c$, as yet unaccounted for by hard QCD), found by the Fermilab E706 Collaboration for 530 and 800 GeV/c protons incident on light…

High Energy Physics - Phenomenology · Physics 2007-05-23 R. K. Shivpuri , B. M. Sodermark , A. N. Mitra

We analyze numerically the radiation and channeling properties of ultrarelativistic electrons and positrons propagating through a periodically bent diamond crystal grown on a straight single-crystal diamond substrate. Such systems can be…

Accelerator Physics · Physics 2021-01-29 Alexander Pavlov , Andrey Korol , Vadim Ivanov , Andrey Solov'yov

We report on the radiative interaction of two single quantum dots (QDs) each in a separate InP/GaInP-based microdisk cavity via resonant whispering gallery modes. The investigations are based on ab initio coupled disk modes. We apply…

Quantum Physics · Physics 2018-01-17 Simon Seyfferle , Fabian Hargart , Michael Jetter , Evelyn Hu , Peter Michler

The strong coupling between an intersubband excitation in a quantum cascade structure and a photonic mode of a planar microcavity has been detected by angle-resolved photovoltaic measurements. A typical anticrossing behavior, with a…

Grazing incidence fast atom diffraction has mainly been investigated with helium atoms, considered as the best possible choice for surface analysis. This article presents experimental diffraction profiles recorded with neon projectile,…

Chemical Physics · Physics 2023-10-24 Maxime Debiossac , Peng Pan , Philippe Roncin

Free-space quantum communication with satellites opens a promising avenue for global secure quantum network and large-scale test of quantum foundations. Recently, numerous experimental efforts have been carried out towards this ambitious…

We demonstrate theoretically that photon-photon attraction can be engineered in the continuum of scattering states for pairs of photons propagating in a hollow-core photonic crystal fiber filled with cold atoms. The atoms are regularly…

Quantum Physics · Physics 2016-05-31 Marina Litinskaya , Edoardo Tignone , Guido Pupillo

Vacuum-stimulated Raman transitions are driven between two magnetic substates of a rubidium-87 atom strongly coupled to an optical cavity. A magnetic field lifts the degeneracy of these states, and the atom is alternately exposed to laser…

Quantum Physics · Physics 2007-05-23 T. Wilk , S. C. Webster , H. P. Specht , G. Rempe , A. Kuhn

We discuss the production of soft photons in high energy hadron-hadron collisions. We present a model where quarks and antiquarks in the hadrons emit ``synchrotron light'' when being deflected by the chromomagnetic fields of the QCD vacuum,…

High Energy Physics - Phenomenology · Physics 2009-10-28 G. W. Botz , P. Haberl , O. Nachtmann

The possibility to convert the photon beam linear polarization into circular one at photon energies of hundreds GeV with the use of crystals is considered. The energy and orientation dependencies of refractive indexes are investigated in…

High Energy Physics - Experiment · Physics 2007-05-23 N. Z. Akopov , A. B. Apyan , S. M. Darbinyan