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While our current cosmological model places galaxy clusters at the nodes of a filament network (the cosmic web), we still struggle to detect these filaments at high redshifts. We perform a weak lensing study for a sample of 16 massive,…

The Ly-alpha forest provides important constraints on the smoothness of the universe on large scales. We calculate the flux distribution along line-of-sight to quasars in a universe made of randomly distributed clumps, each of them with a…

天体物理学 · 物理学 2009-10-31 Adi Nusser , Ofer Lahav

A microscopic calculation of $\alpha$-cluster preformation probability and $\alpha$ decay width in the typical $\alpha$ emitter $^{212}$Po is presented. Results are obtained by improving a recent approach to describe $\alpha$ preformation…

核理论 · 物理学 2016-08-06 Chang Xu , Zhongzhou Ren , G. Röpke , P. Schuck , Y. Funaki , H. Horiuchi , A. Tohsaki , T. Yamada , Bo Zhou

We investigate the high and low energy scattering of charged scalar waves from an extreme dilaton black hole (DBH). The analyses here correspond to forward scattering processes of two charged scalar particles with dilaton coupling under a…

高能物理 - 理论 · 物理学 2019-06-04 Takuya Maki , Kiyoshi Shiraishi

In an analysis of the IRAS 1.2 Jy redshift catalogue, with emphasis on the separate examination of northern and southern parts (in galactic coordinates), we found that the clustering of galaxies differs significantly between north and…

天体物理学 · 物理学 2007-05-23 Martin Kerscher , Jens Schmalzing , Thomas Buchert , Herbert Wagner

The energy spectrum of two short-range interacting particles in a harmonic potential trap has previously been related to free-space scattering phase shifts. But the existing formula for this purpose is exact only in the limit of an…

核理论 · 物理学 2020-05-20 Xilin Zhang

Many systems in nature are conjectured to exist at a critical point, including the brain and earthquake faults. The primary reason for this conjecture is that the distribution of clusters (avalanches of firing neurons in the brain or…

统计力学 · 物理学 2023-03-22 W. Klein , Harvey Gould , Sakib Matin

Weak gravitational lensing of background galaxies provides a direct probe of the projected matter distribution in and around galaxy clusters. Here we present a self-contained pedagogical review of cluster--galaxy weak lensing, covering a…

宇宙学与河外天体物理 · 物理学 2020-12-15 Keiichi Umetsu

We present the first measurement of the angular correlation function in a $K$-selected galaxy survey, from two fields covering almost 10 square degrees. The angular correlation function at small angles is well described by a $\theta^{-0.8}$…

天体物理学 · 物理学 2016-06-08 C. M. Baugh , J. P. Gardner , C. S. Frenk , R. M. Sharples

In the evaluation of the half-life of the neutrinoless double-$\beta$ decay ($0\nu\beta\beta$) of a doubly closed-subshell nucleus $^{96}$Zr, the structure of the nucleus $^{96}$Mo is essentially important. The $\alpha$-clustering aspects…

核理论 · 物理学 2023-04-03 S. Ohkubo , Y. Hirabayashi

A Monte Carlo light scattering code incorporating aligned non-spherical particles is described. The major effects on the flux distribution, linear polarisation and circular polarisation are presented, with emphasis on the application to…

天体物理学 · 物理学 2009-11-07 P. W. Lucas

We present a theoretical study of elastic spin-dependent electron scattering caused by a nonuniform Rashba spin-orbit coupling strength. Using the spin-generalized method of partial waves the scattering amplitude is exactly derived for the…

介观与纳米尺度物理 · 物理学 2007-05-23 András Pályi , Csaba Péterfalvi , József Cserti

The nuclear equation of state is explored with the constrained HFB approach for self conjugate nuclei. It is found that beyond a certain low, more or less universal density, those nuclei spontaneously cluster into A/4 alpha particles with A…

核理论 · 物理学 2015-06-17 Michel Girod , Peter Schuck

This contribution gives a short review of recent theoretical advances in most topics of nuclear cluster physics concentrating, however, around {$\alpha$} particle clustering. Along the route, the point of view will be critical mentioning…

核理论 · 物理学 2018-11-29 P. Schuck

Two causes of non-locality inherent in nucleon-nucleus scattering are considered. They are the results of two-nucleon antisymmetry of the projectile with each nucleon in the nucleus and the dynamic polarization potential representation of…

核理论 · 物理学 2008-12-18 P. Fraser , K. Amos , S. Karataglidis , L. Canton , G. Pisent , J. P. Svenne

We study the link between classical scattering of spinning black holes and quantum amplitudes for massive spin-$s$ particles. Generic spin orientations of the black holes are considered, allowing their spins to be deflected on par with…

高能物理 - 理论 · 物理学 2019-11-20 Alfredo Guevara , Alexander Ochirov , Justin Vines

We explore possible observable signatures of $\alpha$ clustering of light nuclei in ultra-relativistic nuclear collisions involving ${}^{7,9}$Be, ${}^{12}$C, and ${}^{16}$O. The clustering leads to specific spatial correlations of the…

核理论 · 物理学 2018-03-28 Maciej Rybczyński , Milena Piotrowska , Wojciech Broniowski

We investigate the sensitivity of low-energy nuclear collisions to intrinsic nuclear structure by studying the interplay between initial-state geometry and final-state observables in C+C and C+Pb collisions at $\sqrt{s_{NN}}=2.36$~GeV,…

核理论 · 物理学 2026-02-12 Subhash Singha

We discuss some differences and similarities between electron and neutrino scattering off atomic nuclei. We find that, in the giant resonance region, the two processes excite different nuclear modes, therefore the weak and the…

核理论 · 物理学 2009-11-10 A. Botrugno , G. Co'

We present results on the evolution and clustering of Ly-alpha lines at low z. The sample contains 1298 Ly-alpha lines from 165 quasar spectra mined from the archives of the HST/FOS. Our sample extends to z=1.7, slightly higher than the…

天体物理学 · 物理学 2009-11-07 Adam Dobrzycki , Jill Bechtold , Jennifer Scott , Miwa Morita