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We investigate the impact of the nonlocal geometric force -- arising from the molecular Berry curvature -- on the lattice dynamics of magnetic materials with broken time-reversal symmetry. A first-principles computational framework is…

Materials Science · Physics 2025-06-05 Hao Chen , Haoshu Li , Lifa Zhang , Qian Niu

Large optical chirality in the vicinity of achiral high index dielectric nanostructures has been recently demonstrated as useful means of enhancing molecular circular dichroism. We theoretically study the spatial dependence of optical…

Optics · Physics 2022-05-25 Krzysztof M. Czajkowski , Tomasz J. Antosiewicz

The light-by-light contribution to the anomalous magnetic moment of muon (g-2)_{\mu} from the hadronic exchanges in the neutral pseudoscalar meson channel is calculated in the nonlocal chiral quark model. The full kinematic dependence of…

High Energy Physics - Phenomenology · Physics 2011-07-21 A. E. Dorokhov , A. E. Radzhabov , A. S. Zhevlakov

Recently developed chiral effective field theory models provide excellent descriptions of the bulk characteristics of finite nuclei, but have not been tested with other observables. In this work, densities from both relativistic…

Nuclear Theory · Physics 2016-09-08 B. C. Clark , R. J. Furnstahl , L. Kurth Kerr , John Rusnak , S. Hama

We discuss charge symmetry and charge independence breaking in a chiral effective field theory approach for few-nucleon systems based on a modified Weinberg power counting. We construct a two-nucleon potential with bound and scattering…

Nuclear Theory · Physics 2009-11-06 Markus Walzl , Ulf-G. Meißner , Evgeny Epelbaum

We point out that, due to the use of static nucleon propagators in Heavy Baryon Chiral Perturbation Theory, the current calculations of the nucleon-nucleon potential miss certain contributions starting at two loops. These contributions give…

Nuclear Theory · Physics 2008-11-26 Jorge Mondejar , Joan Soto

The optical potential is a powerful instrument for calculations on a wide variety of nuclear reactions, in particular, for quasi-elastic lepton-nucleus scattering. Phenomenological optical potentials are successful in the description of…

Nuclear Theory · Physics 2017-07-13 Carlotta Giusti

The nonlocal chiral effective theory is applied to investigate the electromagnetic and strange form factors of nucleon. The bubble and tadpole diagrams are included in the calculation. With the contributions from bubble and tadpole…

High Energy Physics - Phenomenology · Physics 2023-02-06 Z. Y. Gao , P. Wang , M. Y. Yang

The key question of this letter is whether the K-nucleus optical potential is deep, as it is prefered by the phenomenological fits to kaonic atoms data, or shallow, as it comes out from unitary chiral model calculations. The current…

Nuclear Theory · Physics 2011-05-13 V. K. Magas , J. Yamagata-Sekihara , S. Hirenzaki , E. Oset , A. Ramos

In this work, we combine the nonlocal theory of Eringen into the E-B beam bending together with nonlinear kinematics [3]. We briefly present the derivation and key equations of this nonlinearnonlocal beam theory and investigate the role of…

Computational Physics · Physics 2012-11-29 Chi Huan Nguyen , Shailendra P. Joshi

The theory of the macroscopic field appearing in the Kohn-Sham exchange-correlation potential for dielectric materials, as introduced by Gonze, Ghosez and Godby, is reexamined. It is shown that this Kohn-Sham field cannot be determined from…

Materials Science · Physics 2009-10-30 David Vanderbilt

We present a new chiral expansion scheme for the nucleon-nucleon scattering amplitude which preserves unitarity exactly. Our effective field theory builds on the power counting rules for 2-nucleon reducible diagrams proposed in \cite{lutz}.…

Nuclear Theory · Physics 2010-12-16 M. Lutz

The work investigates enantiomers of chiral organo-metallic particles that exhibit a collective memory effect. Under the influence of magnetic field millions of particles in solution form macroscopic shapes and when dispersed again at zero…

Chemical Physics · Physics 2024-12-24 I. Carmeli , Vladimiro Mujica , Gregory Leitus , Pini Shechter , Zeev Zalevsky , Shachar Richter

The Dirac structure of the nucleon self-energy in asymmetric nuclear matter cannot reliably be deduced from the momentum dependence of the single-particle energies. It is demonstrated that such attempts yield an isospin dependence with even…

Nuclear Theory · Physics 2008-11-26 S. Ulrych , H. Müther

We employ the extended Nambu-Jona-Lasinio, linear-$\sigma$ models, and the density-dependent model with chiral limits to work out the mean fields and relevant properties of nuclear matter. To have the constraint from the data, we reexamine…

Nuclear Theory · Physics 2021-12-07 Niu Li , Si-Na Wei , Wei-Zhou Jiang

We consider the chiral limit of QCD subjected to an imaginary isospin chemical potential. In the epsilon-regime of the theory we can perform precise analytical calculations based on the zero-momentum Goldstone modes in the low-energy…

High Energy Physics - Theory · Physics 2009-11-11 P. H. Damgaard , U. M. Heller , K. Splittorff , B. Svetitsky , D. Toublan

The Pauli rearrangement potential given by the second-order diagram is evaluated for a nucleon optical model potential (OMP) with $G$ matrices of the nucleon-nucleon interaction in chiral effective field theory. The results obtained in…

Nuclear Theory · Physics 2018-12-26 M. Kohno

Nanoscopic observation of chiro-optical phenomena is essential in wide scientific areas but has measurement difficulties; hence, its physics are still unknown. Currently, in most cases, chiro-optical phenomena have been investigated by…

Optics · Physics 2023-08-21 Junsuke Yamanishi , Hyo-Yong Ahn , Hiromi Okamoto

Calculations for infinite nuclear matter with realistic nucleon-nucleon interactions suggest that the isoscalar effective mass (IEM) of a nucleon at the saturation density equals $m^*/m\sim 0.8\pm 0.1$, at variance with empirical data on…

Nuclear Theory · Physics 2015-05-14 M. Zalewski , P. Olbratowski , W. Satula

Present applications of the dispersive-optical-model analysis are restricted by the use of a local but energy-dependent version of the generalized Hartree-Fock potential. This restriction is lifted by the introduction of a corresponding…

Nuclear Theory · Physics 2010-12-02 W. H. Dickhoff , D. Van Neck , S. J. Waldecker , R. J. Charity , L. G. Sobotka
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