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Scattering in 3+1-dimensional QED is believed to give rise to transitions between different photon vacua. We show that these transitions can be removed by taking into account off-shell modes which correspond to Li\'enard-Wiechert fields of…

High Energy Physics - Theory · Physics 2021-08-04 Dominik Neuenfeld

Color transparency is studied for the $K^+$ meson produced due to large four-momentum transfer in the $(e,e^\prime)$ reaction on nuclei. The variation of the $K^+$ meson color transparency ($K^+$CT) with the photon virtuality, and kaon…

Nuclear Theory · Physics 2019-11-01 Swapan Das

Electromagnetically induced transparency (EIT) is an optical phenomenon which allows a drastic modification of the optical properties of an atomic system by applying a control field. It has been largely studied in the last decades and…

Quantum Physics · Physics 2017-02-27 H. S. Borges , M. H. Oliveira , C. J. Villas-Boas

Neutron diffraction measurements on single crystals of Cr1-xVx (x=0, 0.02, 0.037) show that the ordering moment and the Neel temperature are continuously suppressed as x approaches 0.037, a proposed Quantum Critical Point (QCP). The wave…

Strongly Correlated Electrons · Physics 2009-11-13 D. A. Sokolov , M. C. Aronson , R. Erwin , J. W. Lynn , M. D. Lumsden , S. E. Nagler

We show that critical opalescence, a clear signature of second-order phase transition in conventional matter, manifests itself as critical intermittency in QCD matter produced in experiments with nuclei. This behaviour is revealed in…

High Energy Physics - Phenomenology · Physics 2009-11-11 N. G. Antoniou , F. K. Diakonos , A. S. Kapoyannis , K. S. Kousouris

We study coherent Coulomb excitation of ultrarelativistic nuclei passing through the aligned crystal target. We develop multiple scattering theory description of this process which consistently incorporates both the specific resonant…

High Energy Physics - Phenomenology · Physics 2009-11-07 V. R. Zoller

In the absence of a global description of the experimental data on elastic and soft diffractive scattering from the first principles of QCD, model-independent analyses may provide useful phenomenological insights for the development of the…

High Energy Physics - Phenomenology · Physics 2016-03-08 D. A. Fagundes , M. J. Menon , P. V. R. G. Silva

A new linked cluster expansion for the calculation of ground state observables of complex nuclei with realistic interactions has been developed [1-3]; using the V8' potential [4] the ground state energy, density and momentum distribution of…

Nuclear Theory · Physics 2007-05-23 M. Alvioli , C. Ciofi degli Atti , I. Marchino , H. Morita

Light scattering intensity distribution along the optical fiber length is analyzed, which was measured by optical time domain reflectometry (OTDR) during and after fiber irradiation in a nuclear reactor. The OTDR traces prove to contain two…

Optics · Physics 2025-07-14 S. A. Vasiliev , P. F. Kashaykin , A. L. Tomashuk

We conjecture that the phase transitions in QCD at large number of colours N\gg 1 is triggered by the drastic change in the instanton density. As a result of it, all physical observables also experience some sharp modification in the \theta…

High Energy Physics - Phenomenology · Physics 2015-06-16 Ariel R. Zhitnitsky

London penetration depth, $\lambda(T)$, was measured in single crystals of SrFe$_2$(As$_{1-x}$P$_x$)$_2$ ($x=$0.35) iron - based superconductor. The influence of disorder on the transition temperature, $T_c$, and on $\lambda(T)$ was…

We study breakdown of $CPT$ symmetry which can occur in the decay process $B \bar B \to l^\pm X^\mp f$ with $f$ being a CP eigenstate. In this process, the standard model expectations for time ordered semi-leptonic and hadronic events, i.e.…

High Energy Physics - Phenomenology · Physics 2009-11-10 K. R. S. Balaji , Wilfried Horn , E. A. Paschos

By starting with the simpliest expression of the first order linear wave equation (Dirac's equation) and by confining the elements of the coefficients (matrices) to the quaternions, it is shown that the association of the imaginary bases of…

General Physics · Physics 2008-12-10 Lester C. Welch

Initial state radiation (ISR) in deep inelastic scattering of charged leptons on nucleons can lead to substantial shifts in the reconstruction of $Q^2$ and the scaling variables $x$ and $y$. By measuring at least three out of the four…

High Energy Physics - Experiment · Physics 2007-05-23 Guenter Wolf

Nuclear shadowing corrections to the structure functions of deep inelastic scattering on intermediate-mass nuclei are calculated at very small values of Bjorken x and small values of Q^2 (Q^2<5 Gev^2). The two-component approach developed…

High Energy Physics - Phenomenology · Physics 2020-09-02 Edgar V. Bugaev , Boris V. Mangazeev

Inclusive electron scattering from nuclei at large x and $Q^2$ is the result of a reaction mechanism that includes both quasi--elastic scattering from nucleons and deep inelastic scattering from the quark constituents of the nucleons. Data…

Nuclear Experiment · Physics 2009-11-13 Nadia Fomin

We discuss the role of quantum chaos in atomic nuclei. After reviewing the basic assumptions of the nuclear shell model, we analyze the spectral statistics of the energy levels obtained with realistic shell-model calculations in the fp…

Nuclear Theory · Physics 2008-02-03 Luca Salasnich

One-dimensional photonic crystals (1D PC) represent a class of periodic optical material, composed of alternating media with different dielectric constants along one direction. The most important property of 1D PCs is their photonic…

Optics · Physics 2021-11-08 Quan-Shan Liu , Lu Qiu , Tao Wen , Rui Zhang

Prompt photon production in hadronic collisions at the RHIC and the LHC energies is investigated within the QCD color dipole approach. Predictions for the nuclear modification factor in $pA$ collisions are evaluated based on parton…

High Energy Physics - Phenomenology · Physics 2020-11-11 G. Sampaio dos Santos , G. Gil da Silveira , M. V. T. Machado

The high order corrections to renormalon are considered. Each new type of insertions into the renormalon chain of graphs generates the correction to the asymptotics of perturbation theory of the order of $\sim 1$. However, this series of…

High Energy Physics - Phenomenology · Physics 2010-10-27 S. V. Faleev , P. G. Silvestrov