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Dynamical correlations and non-local contributions beyond static mean-field theories are of fundamental importance for describing the electronic structure of correlated metals. Their effects are usually described with many-body approaches…

Strongly Correlated Electrons · Physics 2023-09-22 Marco Vanzini , Nicola Marzari

We show that the radiative corrections to charged current (CC) nuclear reactions with an electron(positron) in the final state are described by a universal function. The consistency of our treatment of the radiative corrections with the…

High Energy Physics - Phenomenology · Physics 2009-11-07 A. Kurylov , M. J. Ramsey-Musolf , P. Vogel

The dimensional scaling of the differential cross sections of binary reactions $d\sigma/d t\sim s^{-(n-2)}$, where $n$ is given by constituent quark counting rules, was predicted for asymptotically high energies $\sqrt{s}\gg m_i$ and…

Nuclear Theory · Physics 2016-09-21 Yu. N. Uzikov

Defects formed under irradiation in the bulk act as additional pinning centers resulting in the well-known effect of radiation-induced hardening. On the other hand, there is a poorly understood but well-established effect of instant and…

I provide a brief, and therefore necessarily biased, review of the application of effective field theory to electromagnetic processes on the deuteron. Electron-deuteron scattering is discussed for virtual photon momenta up to 700 MeV, and…

Nuclear Theory · Physics 2009-11-06 Daniel R. Phillips

I summarize two recent applications of chiral perturbation theory to electromagnetic reactions on deuterium: elastic electron-deuteron scattering, and Compton scattering on deuterium. Both calculations have now been carried out to three…

Nuclear Theory · Physics 2009-11-11 Daniel R. Phillips

Photo- and electro-disintegration techniques have been traditionally used for studying giant dipole resonances and through them nuclear structure. Over a long period, detailed theoretical models for the giant dipole resonances were proposed…

Nuclear Theory · Physics 2013-06-24 J. Swain , Y. N. Srivastava , A. Widom

Results of numerical simulations of fusion rate d(d,p)t, for low-energy deuteron beam, colliding with deuterated metallic matrix (Raiola et al. Phys. Lett.B 547 (2002) 193 and Eur. Phys J. A 13 (2002) 377) confirm analytical estimate given…

Nuclear Theory · Physics 2009-11-10 M. Coraddu , G. Mezzorani , Yu. V. Petrushevich , P. Quarati , A. N. Starostin

Short-pulse, ultra high-intensity lasers have opened new regimes for studying fusion plasmas and creating novel ultra-short ion beams and neutron sources. Diagnosing the plasma in these experiments is important for optimizing the fusion…

Plasma Physics · Physics 2023-07-14 B. M. Hegelich , L. Labun , O. Z. Labun , T. A. Mehlhorn

We theoretically investigate the interaction of moderate intensity near-infrared few cycle laser pulses with nano-scale metal tips. Local field enhancement in a nanometric region around the tip apex triggers coherent electron emission on…

Mesoscale and Nanoscale Physics · Physics 2014-08-26 Georg Wachter , Christoph Lemell , Joachim Burgdoerfer

The electron-screening acceleration of laboratory fusion reactions at astrophysical energies is an unsolved problem of great importance to astrophysics. That effect is modeled here by considering the fusion of hydrogen-like atoms whose…

Nuclear Theory · Physics 2009-11-06 Theodore E. Liolios

Photo-production of $\eta$-mesons and their collisions with light nuclei are studied within the Alt-Grassberger-Sandhas (AGS) formalism for different parameters of $\eta N$ interaction. A three-body resonance or a quasi-bound state is found…

Nuclear Theory · Physics 2007-05-23 N. V. Shevchenko , V. B. Belyaev , S. A. Rakityansky , S. A. Sofianos , W. Sandhas

The large-degeneracy expansion for dilute magnetic alloys is extended to account for conduction electrons interactions. Particular attention is paid to the renormalization of the hybridization vertex which affects the low-energy…

Strongly Correlated Electrons · Physics 2008-02-03 S. Tornow , V. Zevin , G. Zwicknagl

Ultrafast relaxation dynamics of an athermal electron distribution is investigated in silver films using a femtosecond pump-probe technique with 18 fs pulses in off-resonant conditions. The results yield evidence for an increase with time…

Strongly Correlated Electrons · Physics 2022-09-29 Natalia Del Fatti , Roland Bouffanais , Fabrice Vallée , Christos Flytzanis

This work describes the first observations of the ionisation of neon in a metastable atomic state utilising a strong-field, few-cycle light pulse. We compare the observations to theoretical predictions based on the Ammosov-Delone-Krainov…

Dielectronic recombination (DR) of few-electron ions has evolved into a sensitive spectroscopic tool for highly charged ions. This is due to technological advances in electron-beam preparation and ion-beam cooling techniques at heavy-ion…

Atomic Physics · Physics 2011-02-01 Stefan Schippers

The scattering of neutral particles by an atomic nucleus can lead to electronic ionisation and excitation through a process known as the Migdal effect. We revisit and improve upon previous calculations of the Migdal effect, using the…

High Energy Physics - Phenomenology · Physics 2023-03-01 Peter Cox , Matthew J. Dolan , Christopher McCabe , Harry M. Quiney

We provide a physical explanation for enhancement of the low-energy electron production by sensitizing nanoparticles due to irradiation by fast ions. It is demonstrated that a significant increase in the number of emitted electrons arises…

Atomic and Molecular Clusters · Physics 2016-10-07 Alexey V. Verkhovtsev , Andrei V. Korol , Andrey V. Solov'yov

The electronic stopping power of H and He moving through gold is obtained to high accuracy using time-evolving density-functional theory, thereby bringing usual first-principles accuracies into this kind of strongly coupled, continuum…

Materials Science · Physics 2012-06-26 M. Ahsan Zeb , J. Kohanoff , D. Sanchez-Portal , A. Arnau , J. I. Juaristi , Emilio Artacho

Tunneling ionization of an atom in ultrashort laser pulses is considered. When the driving laser pulse is switched-on and -off with a steep slope, the photoelectron momentum distribution (PMD) shows an edge-effect because of the…

Atomic Physics · Physics 2022-07-07 M. Klaiber , Q. Z. Lv , K. Z. Hatsagortsyan , C. H. Keitel