17,447 research outputs found
Nuclear structure study with core excitations in Ni region: for space
Shell model calculations for Ni, Cu and Zn isotopes by modifying
interaction due to Sorlin {\it et. al.,} [Phys. Rev. Lett. 88, 092501 (2002)]
have been reported. In the present work 28 two body matrix elements of the
earlier interaction have been modified. Present interaction is able to explain
new experimental results for this region.Comment: 17 pages, 13 figures. Accepted for publication in Modern Physics
Letters
Data analysis of continuous gravitational wave: Fourier transform-II
In this paper we obtain the Fourier Transform of a continuous gravitational
wave. We have analysed the data set for (i) one year observation time and (ii)
arbitrary observation time, for arbitrary location of detector and source
taking into account the effects arising due to rotational as well as orbital
motion of the earth. As an application of the transform we considered spin down
and N-component signal analysis.Comment: Accepted in MNRAS, 14 pages, 4 figure
QCD Critical Point in a Quasiparticle Model
Recent theoretical investigations have unveiled a rich structure in the
quantum chromodynamics (QCD) phase diagram which consists of quark gluon plasma
(QGP) and the hadronic phases but also supports the existence of a cross-over
transition ending at a critical end point (CEP). We find a too large variation
in determination of the coordinates of the CEP in the temperature (T), baryon
chemical potential () plane and, therefore, its identification in the
current heavy-ion experiments becomes debatable. Here we use an equation of
state (EOS) for a deconfined QGP using a thermodynamically consistent
quasiparticle model involving quarks and gluons having thermal masses. We
further use a thermodynamically consistent excluded volume model for the hadron
gas (HG) which was recently proposed by us. Using these equations of state, a
first order deconfining phase transition is constructed using Gibbs' criteria.
This leads to an interesting finding that the phase transition line ends at a
critical point (CEP) beyond which a cross-over region exists. Using our thermal
HG model, we obtain a chemical freeze out curve and we find that the CEP lies
in close proximity to this curve as proposed by some authors. The coordinates
of CEP are found to lie within the reach of RHIC experiment.Comment: 15 pages, 3 figures, 1 table; minor corrections, to be appeared in
Phys. Rev.
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