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We provide a thorough exposition of recent results on the quantum stabilization of cosmic strings. Stabilization occurs through the coupling to a heavy fermion doublet in a reduced version of the standard model. The study combines the…

High Energy Physics - Theory · Physics 2012-06-18 H. Weigel , M. Quandt , N. Graham

Analytical expressions for the binding energy of electrons and positrons in dielectric clusters, analysed in this work, neglect the elastic effects. Therefore, we present the density-functional theory for neutral liquid clusters that…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Valentin V. Pogosov , Walter V. Pogosov , Denis P. Kotlyarov

The fragmentation of multiply charged atomic sodium clusters of mass 200 is investigated using the Micro-canonical Metropolis Monte Carlo (MMMC) statistical technique for excitation energies up to 200 eV and for cluster charges up to $+9e$.…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 I. Hidmi , D. H. E. Gross , H. R. Jaqaman

Dynamical collapse and fragmentation of low-metallicity cloud cores is studied using three-dimensional hydrodynamical calculations, with particular attention devoted whether the cores fragment in the dust-cooling phase or not. The cores…

Astrophysics · Physics 2009-11-11 T. Tsuribe , K. Omukai

We present a numerical study of settling and clustering of small inertial particles in homogeneous and isotropic turbulence. Particles are denser than the fluid, but not in the limit of being much heavier than the displaced fluid. At fixed…

Fluid Dynamics · Physics 2022-01-03 Christian Reartes , Pablo D. Mininni

Process of relaxation of Lennard-Jones cluster with an intrinsic pore was investigated by molecular dynamics method for different phase states of an initial cluster. Strong dependence of pore relaxation character on the initial cluster…

Mesoscale and Nanoscale Physics · Physics 2020-01-31 M. A. Ratner , V. V. Yanovsky

We report on the electrostatic complexation between polyelectrolyte-neutral copolymers and oppositely charged 6 nm-crystalline nanoparticles. For two different dispersions of oxide nanoparticles, the electrostatic complexation gives rise to…

Soft Condensed Matter · Physics 2007-09-10 J. -F. Berret , A. Sehgal , M. Morvan , O. Sandre , A. Vacher , M. Airiau

The static response properties and the structural stability of silver clusters in the size range $1\le n \le 23$ have been studied using a linear combination of atomic Gaussian-type orbitals within the density functional theory in the…

Atomic and Molecular Clusters · Physics 2009-11-13 M. Pereiro , D. Baldomir

The isothermal compression of a dilute nucleonic gas invoking cluster degrees of freedom is studied in an equilibrium statistical model; this clusterized system is found to be more stable than the pure nucleonic system. The equation of…

Nuclear Theory · Physics 2008-11-26 J. N. De , S. K. Samaddar

The stability mechanism of cuboctahedral clusters in nonstoichiometric uranium dioxide is investigated by first-principles LSDA+U method. Calculations reveal that the structural stability is inherited from U6O12 molecular cluster whereas…

Materials Science · Physics 2009-11-13 Hua Y. Geng , Ying Chen , Yasunori Kaneta , Motoyasu Kinoshita

Coulomb dissociation is an especially simple and important reaction mechanism. Since the perturbation due to the electric field of the nucleus is exactly known, firm conclusions can be drawn from such measurements. Electromagnetic matrix…

Nuclear Theory · Physics 2009-11-06 Gerhard Baur , Kai Hencken , Dirk Trautmann , Stefan Typel , Hermann H. Wolter

We explore the appearance of light clusters at high densities of collapsing stellar cores. Special attention is paid to the unstable isotope H4, which was not included in previous studies. The importance of light clusters in the calculation…

Nuclear Theory · Physics 2018-12-27 Andrey Yudin , Matthias Hempel , Sergei Blinnikov , Dmitriy Nadyozhin , Igor Panov

A new statistical method for systematizing the nuclei fission fragments, investigation of their mass and charge spectra and neutron fission parameters has been suggested. In proposed method, the mass and charge yields of nucleons are…

Nuclear Theory · Physics 2015-06-04 V. T. Maslyuk , O. A. Parlag , O. I. Lendyel , T. I. Marynets , M. I. Romanyuk

Employing both the number density and energy density, the equation of state of fermions for each microscopic region of a neutron star is derived in the presence of various statistical effects. It is computed as functions of temperature (T),…

High Energy Astrophysical Phenomena · Physics 2022-06-22 Samina Masood , Serkan Caliskan

In the present work, we numerically explore the existence and stability properties of different types of configurations of dark-bright solitons, dark-bright soliton pairs and pairs of dark-bright and dark solitons in discrete settings,…

Pattern Formation and Solitons · Physics 2015-05-20 A. Alvarez , J. Cuevas , F. R. Romero , P. G. Kevrekidis

Colloidal crystals formed by size-asymmetric binary particles co-assemble into a wide variety of colloidal compounds with lattices akin to ionic crystals. Recently, a transition from a compound phase with a sublattice of small particles to…

Soft Condensed Matter · Physics 2023-09-12 Ali Ehlen , Hector Lopez-Rios , Monica Olvera de la Cruz

In this experimental work, the thermodynamics and self-organization of classical two-dimensional Coulomb clusters are studied as a function of the cluster size. The experiments are carried out in a DC glow discharge Argon plasma in the…

Plasma Physics · Physics 2021-07-28 M. G. Hariprasad , P. Bandyopadhyay , Garima Arora , A. Sen

The static electric dipole polarizability of $\mathrm{Na_N}$ clusters with even N has been calculated in a collective, axially averaged and a three-dimensional, finite-field approach for $2\le N \le 20$, including the ionic structure of the…

Atomic and Molecular Clusters · Physics 2009-10-31 S. Kümmel , T. Berkus , P. -G. Reinhard , M. Brack

In a recent work, [1] the equilibrium of a cluster of charged dust particles mutually interacting with screened Coulomb force and radially confined by an externally applied electric field in a 2-D configuration was studied. It was shown…

The sensitive dependence of the cluster ion dissociation behavior on the elastic response of the target metal is experimentally demonstrated. Five types of metal are bombarded with cluster ions consisting of thousands of argon atoms at an…

Atomic and Molecular Clusters · Physics 2014-05-27 Kozo Mochiji , Naoki Se , Norio Inui , Kousuke Moritani