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We explore the signatures of quintessence and modified gravity theories in the relativistic description of galaxy clustering within a parametrized post-Friedmann framework. For this purpose, we develop a calibration method to consistently…

宇宙学与河外天体物理 · 物理学 2013-10-29 Lucas Lombriser , Jaiyul Yoo , Kazuya Koyama

An effective model for describing the relativistic quantum dynamics of a radiating electron is developed via a relativistic generalization of the Lindblad master equation. By incorporating both radiation reaction and vacuum fluctuations…

量子物理 · 物理学 2026-01-01 Andre G. Campos , Karen Z. Hatsagortsyan , Christoph H. Keitel

We study the radiative leptonic $B_c\to \gamma\ell\bar\nu$ decays in the nonrelativistic QCD effective field theory, and consider a fast-moving photon. As a result the interactions with the heavy quarks can be integrated out, and thus we…

高能物理 - 唯象学 · 物理学 2015-10-14 Wei Wang , Rui-Lin Zhu

This study evaluates the accuracy of nuclear fragmentation simulations using a quantum molecular dynamics (QMD) model based on relativistic mean field (RMF) theory for an energy range of 50-400 MeV/u, relevant to hadron therapy. A total of…

In this work, we theoretically investigate the deflection of light for strong- and weak-field regimes in the background of an electrically charged BH described in Kalb-Ramond gravity, which introduces the Lorentz symmetry violation…

广义相对论与量子宇宙学 · 物理学 2026-02-27 C. F. S. Pereira , Marcos V. de S. Silva , A. R. Soares , A. A. Araújo Filho , R. L. L. Vitória , H. Belich

We perform three-dimensional numerical relativity simulations of homogeneous and inhomogeneous expanding spacetimes, with a view towards quantifying non-linear effects from cosmological inhomogeneities. We demonstrate fourth-order…

宇宙学与河外天体物理 · 物理学 2017-03-22 Hayley J. Macpherson , Paul D. Lasky , Daniel J. Price

The dark matter scattering with atomic bound electrons is a crucial avenue for exploring the sub-GeV mass range. If not handled properly, even negative values can arise in the scattering matrix element squared or equivalently the…

高能物理 - 唯象学 · 物理学 2025-09-22 Shao-Feng Ge , Jie Sheng , Chuan-Yang Xing

The Fokker-Planck equation models rare events across sciences, but its high-dimensional nature challenges classical computers. Quantum algorithms for such non-unitary dynamics often suffer from exponential {decay in} success probability. We…

量子物理 · 物理学 2026-01-23 Tyler Kharazi , Ahmad M. Alkadri , Kranthi K. Mandadapu , K. Birgitta Whaley

We discuss the application of a relativistic potential model to the description of the spectrum and radiative transitions in mesons containing at least one heavy quark (b or c). Although the model has a small number of parameters, it is…

高能物理 - 唯象学 · 物理学 2026-05-06 I. V. Obraztsov , A. E. Bondar , A. I. Milstein

The full space-time evolution of gluons, light and heavy quarks in ultra-relativistic heavy-ion collisions is studied within the partonic transport model Boltzmann Approach to MultiParton Scatterings (BAMPS). We discuss for light and heavy…

高能物理 - 唯象学 · 物理学 2015-06-17 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

Extracting the Hamiltonian of interacting quantum-information processing systems is a keystone problem in the realization of complex phenomena and large-scale quantum computers. The remarkable growth of the field increasingly requires…

The hypothesis of limiting fragmentation (LF) or it is called otherwise recently, as extended longitudinal scaling, is an interesting phenomena in high energy multiparticle production process. This paper discusses about different regions of…

高能物理 - 唯象学 · 物理学 2019-04-17 Pragati Sahoo , Pooja Pareek , Swatantra Kumar Tiwari , Raghunath Sahoo

We present a complete systematically theoretical study of multifragmentation for asymmetric colliding nuclei for heavy-ion reactions in the energy range between 50 MeV/nucleon and 600 MeV/nucleon by using soft and hard equations of state.…

核理论 · 物理学 2010-11-19 Varinderjit Kaur , Suneel Kumar

Using the information current, we develop a Lorentz-covariant framework for modeling equilibrium fluctuations in relativistic kinetic theory in the grand-canonical ensemble. The resulting stochastic theory is proven to be causal and…

核理论 · 物理学 2024-07-24 Gabriel Soares Rocha , Lorenzo Gavassino , Nicki Mullins

We show that the QCD factorization approach for $B$-meson decays to charmless hadronic two-body final states can be extended to include electromagnetic corrections. The presence of electrically charged final-state particles complicates the…

高能物理 - 唯象学 · 物理学 2020-12-02 Martin Beneke , Philipp Böer , Jan-Niklas Toelstede , K. Keri Vos

Generalising the work of Lenard and Bernstein, we introduce a new, fully relativistic model to describe collisional plasmas. Like the Fokker-Planck operator, this equation represents velocity diffusion and conserves particle number.…

等离子体物理 · 物理学 2009-10-23 Adam Noble , David Burton

The analysis of the linearization effect in multifractal analysis, and hence of the estimation of moments for multifractal processes, is revisited borrowing concepts from the statistical physics of disordered systems, notably from the…

统计力学 · 物理学 2011-07-28 Florian Angeletti , Marc Mézard , Eric Bertin , Patrice Abry

Recently, many experiments with cold atomic gases have been conducted from interest in the non-equilibrium dynamics of correlated quantum systems. Of these experiments, the mixing dynamics of fermion clusters motivates us to research…

量子气体 · 物理学 2014-07-31 Jun'ichi Ozaki , Masaki Tezuka , Norio Kawakami

The form factors of the semileptonic $B$, $B_s$ and $B_c$ meson decays are calculated in the framework of the relativistic quark model based on the quasipotential approach in QCD. They are expressed through the overlap integrals of the…

高能物理 - 唯象学 · 物理学 2022-07-27 R. N. Faustov , V. O. Galkin , Xian-Wei Kang

The relativistic spinning particle model, proposed in [3,4], is analyzed in a Hamiltonian framework. The spin is simulated by extending the configuration space by introducing a light-like four vector degree of freedom. The model is heavily…

高能物理 - 理论 · 物理学 2009-11-06 Sudipta Das , Subir Ghosh