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An ensemble of inelastically colliding grains driven by a vibrating wall in 2D exhibits density clustering. Working in the limit of nearly elastic collisions and employing granular hydrodynamics, we predict, by a marginal stability…

软凝聚态物质 · 物理学 2007-05-23 Eli Livne , Baruch Meerson , Pavel V. Sasorov

We report a study on the dynamics of absorbing asymmetric carbon clusters trapped by a loosely focused Gaussian beam using photophoretic force. At high laser powers, all the trapped clusters display rotation coupled with oscillation along…

光学 · 物理学 2024-07-02 Anita Pahi , Shuvojit paul , Ayan Banerjee

The Universe expansion rate is modulated around local inhomogeneities due to their gravitational potential. Velocity waves are then observed around galaxy clusters in the Hubble diagram. This paper studies them in a ~738 Mpc wide, with…

宇宙学与河外天体物理 · 物理学 2024-04-30 Jenny G. Sorce , Roya Mohayaee , Nabila Aghanim , Klaus Dolag , Nicola Malavasi

We derive expressions for cluster overlap integrals or channel cluster form factors for ab initio no-core shell model (NCSM) wave functions. These are used to obtain the spectroscopic factors and can serve as a starting point for the…

核理论 · 物理学 2009-11-10 Petr Navratil

The composition of hot and dense nuclear matter is calculated including the $1p$-shell nuclei $4 \le A \le 16$. In-medium shifts, in particular Pauli blocking, are determined by the intrinsic wave function of the nuclei. Results are given…

核理论 · 物理学 2020-07-01 Gerd Röpke

Background: Two new $J^\pi=0^+$ states are recently observed around a few MeV above the Hoyle state (the second $0^+$ state in 12C). The characters of them are only poorly discussed in theory and are still mysterious. Purpose: I give for…

核理论 · 物理学 2016-09-07 Yasuro Funaki

A given set of data-points in some feature space may be associated with a Schrodinger equation whose potential is determined by the data. This is known to lead to good clustering solutions. Here we extend this approach into a full-fledged…

数据分析、统计与概率 · 物理学 2010-02-16 Marvin Weinstein , David Horn

Based on (overdamped) Stokesian dynamics simulations and video microscopy experiments, we study the non equilibrium dynamics of a sheared colloidal cluster, which is confined to a two-dimensional disk. The experimental system is composed of…

软凝聚态物质 · 物理学 2020-07-10 Sascha Gerloff , Antonio Ortiz-Ambriz , Pietro Tierno , Sabine H. L. Klapp

Clustering algorithms partition a dataset into groups of similar points. The primary contribution of this article is the Multiscale Spatially-Regularized Diffusion Learning (M-SRDL) clustering algorithm, which uses spatially-regularized…

机器学习 · 计算机科学 2022-04-08 Sam L. Polk , James M. Murphy

A theory is developed to describe the nonlocal effect of spacetime quantization on position measurements transverse to macroscopic separations. Spacetime quantum states close to a classical null trajectory are approximated by plane…

天体物理学 · 物理学 2011-11-10 Craig J. Hogan

Anomalous coarsening in far-from equilibrium one-dimensional systems is investigated by simulation and analytic techniques. The minimal hard core particle (exclusion) models contain mechanisms of aggregated particle diffusion, with rates…

统计力学 · 物理学 2009-11-10 Fabio D. A. Aarao Reis , Robin B. Stinchcombe

We propose a new non-parametric algorithm that can be implemented to study and characterize stellar clusters. The scheme attempts to simultaneously recover the stellar distribution function and the cluster potential by using projected radii…

天体物理学 · 物理学 2009-11-10 Dalia Chakrabarty , Simon Portegies Zwart

We study the influence of the various parameters of scenarios of large-scale structure formation on properties of galaxy clusters, and investigate which cluster properties are most sensitive to these parameters. We present a set of large…

天体物理学 · 物理学 2016-08-30 Pascal de Theije , Eelco van Kampen , Remco Slijkhuis

The $^{12}$C nucleus with $N$=6 and $Z$=6 is a doubly closed-shell nucleus in a toroidal potential. In the description of the ground state and the Hoyle state of $^{12}$C in the resonating group method or the generator coordinate method, a…

核理论 · 物理学 2019-09-19 Cheuk-Yin Wong , Andrzej Staszczak

Since the pioneering discovery of molecular resonances in the 12C+12C reaction more than half a century ago a great deal of research work has been undertaken in alpha clustering. Our knowledge on physics of nuclear molecules has increased…

核实验 · 物理学 2017-11-08 C. Beck

Studies of the dynamics of globular clusters assume different values of bar parameters (mass, velocity, size) and analyse the results of orbit classifications over the range of the chosen values. It is also a usual thing that a spherical…

星系天体物理 · 物理学 2024-01-05 Anton A. Smirnov , Anisa T. Bajkova , Vadim V. Bobylev

Recently, clustering of inertial particles in turbulence has been thoroughly analyzed for statistically homogeneous isotropic flows. Phenomenologically, spatial homogeneity of particles configurations is broken by the advection of a range…

混沌动力学 · 物理学 2015-05-13 P. Gualtieri , F. Picano , C. M. Casciola

Dynamical clustering represents a characteristic feature of active matter consisting of self-propelled agents that convert energy from the environment into mechanical motion. At the micron scale, typical of overdamped dynamics, particles…

软凝聚态物质 · 物理学 2024-06-04 Lorenzo Caprini , Davide Breoni , Anton Ldov , Christian Scholz , Hartmut Löwen

Background: An electron localization function was originally introduced to visualize bond structures in molecules. It became a useful tool to describe electron configurations in atoms, molecules and solids. In nuclear physics, a nucleon…

核理论 · 物理学 2020-10-09 Tong Li , Mengzhi Chen , Chunli Zhang , Witold Nazarewicz , Markus Kortelainen

As part of the ongoing NUCLEI-PACK project, this study presents a semi-classical framework for exploring the microscopic geometry of light and exotic nuclei based on optimized sphere packing of nucleons and clusters. Starting from explicit…

核理论 · 物理学 2025-10-14 H. M. Maridi