Results 51 to 60 of about 4,563,863 (188)

Formation of trade networks by economies of scale and product differentiation

open access: yesJournal of Physics: Complexity, 2023
Understanding the structure and formation of networks is a central topic in complexity science. Economic networks are formed by decisions of individual agents and thus not properly described by established random graph models.
Chengyuan Han   +3 more
doaj   +1 more source

Effects of Berry phase and instantons in one dimensional Kondo-Heisenberg model

open access: yes, 2011
Motivated by the global phase diagram of antiferromagnetic heavy-fermion metals, we study the Kondo effect from the perspective of a nonlinear sigma model in the one dimensional Kondo-Heisenberg model.
Goswami, Pallab, Si, Qimiao
core   +1 more source

Imaging the formation and surface phase separation of the CE phase

open access: yesnpj Quantum Materials, 2021
The CE phase is an extraordinary phase exhibiting the simultaneous spin, charge, and orbital ordering due to strong electron correlation. It is an ideal platform to investigate the role of the multiple orderings in the phase transitions and discover ...
Haibiao Zhou   +7 more
doaj   +1 more source

Evolution of gaseous disk viscosity driven by supernova explosion in star-forming galaxies at high redshift

open access: yes, 2009
Motivated by Genzel et al.'s observations of high-redshift star-forming galaxies, containing clumpy and turbulent rings or disks, we build a set of equations describing the dynamical evolution of gaseous disks with inclusion of star formation and its ...
Brooks   +32 more
core   +1 more source

Local lattice distortions and chemical short-range order in MoNbTaW

open access: yesMaterials Research Letters
Extended X-ray absorption fine structure (EXAFS) conducted on an equiatomic MoNbTaW bcc medium-entropy alloy that was annealed at 2273 K reveals unexpectedly small 1st and 2nd shell element-specific lattice distortions.
Andrea Fantin   +4 more
doaj   +1 more source

Blue spectra and induced formation of primordial black holes [PDF]

open access: yes, 1998
We investigate the statistical properties of primordial black hole (PBH) formation in the very early Universe. We show that the high level of inhomogeneity of the early Universe leads to the formation of the first generation PBHs. %The existence of these
A. G. Doroshkevich   +33 more
core   +2 more sources

Cluster-liquid transition in finite saturated fermionic systems [PDF]

open access: yes, 2014
The role of saturation for cluster formation in finite systems such as atomic nuclei is analyzed by considering three length-scale ratios, and performing deformation-constrained self-consistent mean-field calculations.
Ebran, Jean-Paul   +3 more
core   +6 more sources

INVESTIGATION OF ELECTROPHYSICAL PROPERTIES OF LEAD SILICATE GLASSES C87-2

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2014
We experimentally investigated the temperature dependence of the electrical conductivity and the kinetics of lead-silicate glass C87-2. The influence of mass transfer under the influence of an electric field on the electrical conductivity was also ...
A.M. Karmokov   +3 more
doaj   +1 more source

Solid phase formation during aluminium electrolysis

open access: yesElectrochemistry Communications, 2020
The paper illustrates the results of experimental study on the formation of the solid phase on the graphite crucible wall in the cryolite-alumina electrolyte depending on the temperature, rates of the liquid phase motion and heat flow in the laboratory ...
Olga Tkacheva   +2 more
doaj   +1 more source

The relation between metallicity, stellar mass and star formation in galaxies: an analysis of observational and model data

open access: yes, 2011
We study relations between stellar mass, star formation and gas-phase metallicity in a sample of 177,071 unique emission line galaxies from the SDSS-DR7, as well as in a sample of 43,767 star forming galaxies at z=0 from the cosmological semi-analytic ...
Allende Prieto   +81 more
core   +1 more source

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