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To trace the particle nature of dark matter (DM) from cosmic microwave background observations, we study the co-evolution of DM density perturbation and primordial metric perturbation during DM production. Solving the perturbative Einstein…

宇宙学与河外天体物理 · 物理学 2022-11-11 Changhong Li

Radiative association and photodissociation rates are calculated for quadrupole transitions of H2. A complete set of bound and unbound states are included in a self-consistent master equation to obtain steady-state concentrations for a…

星系天体物理 · 物理学 2016-10-12 Robert C. Forrey

Dust-ion collisional effect in dust ion acoustic waves is investigated in the framework of spherical and cylindrical geometry. For such study the fluid equation are takes and collisional effect is consider in the equation of momentum…

等离子体物理 · 物理学 2021-12-08 Uday Narayan Ghosh , Laxmikanta Mandi , Prasanta Chatterjee

We examine the influence of the main approximations employed in density-functional theory descriptions of the solid phase of molecular hydrogen near dissociation. We consider the importance of nuclear quantum effects on equilibrium…

材料科学 · 物理学 2015-06-15 M. A. Morales , J. M. McMahon , C. Pierleoni , D. M. Ceperley

Very accurate wave functions are calculated for small transition metal oxide molecules. These wave functions are decomposed using reduced density matrices to study the underlying correlation of electrons. The correlation is primarily of…

强关联电子 · 物理学 2015-06-11 Lucas K. Wagner

Gauge-invariant sources with a hydrogen wave function shape are constructed for bottomonium two-point correlation functions using the free-form smearing technique. The bottomonium spectrum, including a first lattice result for the D-wave…

高能物理 - 格点 · 物理学 2014-09-26 Mark Wurtz , Randy Lewis , R. M. Woloshyn

We calculate the temperature dependent condensate density $\rho^0 (T)$ of interacting bosons in three dimensions using the functional renormalization group (FRG). From the numerical solution of suitably truncated FRG flow equations for the…

量子气体 · 物理学 2010-03-16 Christopher Eichler , Nils Hasselmann , Peter Kopietz

A dense form of matter is formed in relativistic heavy ion collisions. The constituent degrees of freedom in this dense matter are currently unknown. Long-range, forward-backward multiplicity correlations (LRC) are expected to arise due to…

核实验 · 物理学 2012-11-07 Terence J. Tarnowsky

We consider resonant dynamics in a dilute atomic gas falling under gravity through a periodically pulsed standing-wave laser field. Our numerical calculations are based on a Monte Carlo method for an incoherent mixture of noninteracting…

原子物理 · 物理学 2009-05-07 M. Saunders , P. L. Halkyard , S. A. Gardiner , K. J. Challis

The paper discusses a model of Van der Waals crystals in which band-gap structures do not form. An effect of strong and chaotic electron-electron repulsion, which was excluded from consideration in the traditional approach, is taken into…

超导电性 · 物理学 2007-05-23 V. N. Bogomolov

Triangular flow $v_3$ of identified and inclusive particles in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV is studied as a function of centrality and transverse momentum within the \textsc{hydjet++} model. The model enables one to…

A fission decay of highly excited periodically driven compound nuclei is considered in the framework of Langevin approach. We have used residual-time distribution (RTD) as the tool for studying of dynamic features in a presence of periodic…

混沌动力学 · 物理学 2007-05-23 V. P. Berezovoj , Yu. L. Bolotin , O. P. Dzyubak , V. V. Yanovsky , A. V. Zhiglo

The effects of resonances and flow on the correlation function for two identical particles are described assuming chaotic sources and classical propagation of particles. Expanding to second order in relative momenta, the source sizes can be…

高能物理 - 唯象学 · 物理学 2016-09-01 H. Heiselberg

We calculate resonances which are formed by a particle in a potential which is either Coulombian or quadratic when the particle is strongly coupled to a massless boson, taking only two energy levels into consideration. From these…

量子物理 · 物理学 2009-11-13 Claude Billionnet

We investigate the van der Waals interactions in solid molecular hydrogen structures. We calculate enthalpy and the Gibbs free energy to obtain zero and finite temperature phase diagrams, respectively. We employ density functional theory…

材料科学 · 物理学 2019-05-10 Sam Azadi , Graeme J. Ackland

The influence of nuclear matter on the properties of coherently produced resonances is discussed. It is shown that, in general, the mass distribution of resonance decay products has a two-component structure corresponding to decay outside…

核理论 · 物理学 2009-10-30 K. G. Boreskov , L. A. Kondratyuk , M. I. Krivoruchenko , J. H. Koch

Flow fluctuations in ultra-relativistic heavy-ion collision can be probed by studying the momentum dependent correlations or the factorization-breaking coefficients between flow harmonics in separate kinematic bins (transverse momentum or…

核理论 · 物理学 2023-06-06 Rupam Samanta , Piotr Bozek

The Hamiltonian for a small number, N <= 11, of bosons in a rapidly rotating harmonic trap, interacting via a short range (contact potential) or a long range (Coulomb) interaction, is studied via an exact diagonalization in the lowest…

介观与纳米尺度物理 · 物理学 2008-11-26 Leslie O. Baksmaty , Constantine Yannouleas , Uzi Landman

This work deals with form factors of the energy-momentum tensor (EMT) of spin-0 particles and the unknown particle property D-term related to the EMT, and is divided into three parts. The first part explores free, weakly and strongly…

高能物理 - 唯象学 · 物理学 2017-12-15 Jonathan Hudson , Peter Schweitzer

{It has recently been proposed that giant molecular complexes form at the sites where streams of diffuse warm atomic gas collide at transonic velocities.} {We study the global statistics of molecular clouds formed by large scale colliding…

天体物理学 · 物理学 2009-11-13 P. Hennebelle , R. Banerjee , E. Vazquez-Semadeni , R. Klessen , E. Audit