3,584 research outputs found
Stellar matter in the Quark-Meson-Coupling Model with neutrino trapping
The properties of hybrid stars formed by hadronic and quark matter in
-equilibrium are described by appropriate equations of state (EoS) in
the framework of the quark meson coupling (QMC) model. In the present work we
include the possibility of trapped neutrinos in the equation of state and
obtain the properties of the related hybrid stars. We use the quark meson
coupling model for the hadron matter and two possibilities for the quark matter
phase, namely, the unpaired quark phase and the color-flavor locked phase. The
differences are discussed and a comparison with other relativistic EoS is done.Comment: Reference added, accepted in PR
Pentaquarks in the medium in the quark-meson coupling model
We calculate the properties of the pentaquarks and in
symmetric nuclear matter using the quark meson coupling model (QMC). The
stability of the in the medium with respect to the channel
is discussed.Comment: 6 pages, 5 figures, revte
Relativistic Equation of state with short range correlations
Short range correlations are introduced using unitary correlation method in a
relativistic approach to the equation of state of the infinite nuclear matter
in the framework of the Hartree-Fock approximation. The effect of the
correlations in the ground state properties of the nuclear matter is studied.Comment: 4 pages, 4 figure
Kaon condensation in the quark-meson coupling model and compact stars
The properties of neutron stars constituted of a crust of hadrons and an
internal part of hadrons and kaon condensate are calculated within the
quark-meson-coupling model. We have considered stars with nucleons only in the
hadron phase and also stars with hyperons as well. The results are compared
with the ones obtained from the non-linear Walecka model for the hadronic
phase.Comment: 10 pages, 6 figure
Simple Apparatus for Producing Single Liquid Drops
A simple experimental apparatus has been used to produce individual mercury and sodium amalgam drops in the size range of 0.3-2.5 mm diam. A high resistance to the flow of liquid was provided by a capillary tube. The cross section consisted of a 0.20 mm o.d. tungsten wire placed in a 0.25 mm capillary bore. By this method, flow rates of 1 Όl/s and lower were obtained, which enabled the formation of drops as small as 1 mm diam in a time interval of 20 s. The drops were formed at a plastic tip, and on reaching the desired size, were stripped off by a stream of argon. An optical sensor was used to detect the growing drop and to switch on the argon stream at the desired time. The growth of the drops at the tip was observed using an image analysis system which showed good agreement between the observed and calculated drop sizes at various instants. The consistency in size from drop to drop, for any particular setting of the apparatus, was evaluated by analyzing magnified pictures of the drops as well as by measuring their weights. The variation in the drop size was found to be within ±2% of the mean value
Studies on Hydrazones, Semicarbazones & Thiosemicarbazones as Ligands : Part I - Some Divalent Metal Complexes of Benzil Phenyl Hydrazone
188-19
Aspects of short range correlations in a relativistic model
In the present work short range correlations are introduced for the first
time in a relativistic approach to the equation of state of the infinite
nuclear matter in the framework of the Hartree-Fock approximation using an
effective Hamiltonian derived from the Walecka model. The
unitary correlation method is used to introduce short range correlations. The
effect of the correlations in the ground state properties of the nuclear matter
is discussed.Comment: 7 pages, 3 figure
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