6,069 research outputs found
Prospects of inflation with perturbed throat geometry
We study brane inflation in a warped deformed conifold background that
includes general possible corrections to the throat geometry sourced by
coupling to the bulk of a compact Calabi-Yau space. We focus specifically, on
the perturbation by chiral operator of dimension 3/2 in the CFT. We find that
the effective potential in this case can give rise to required number of
e-foldings and the spectral index consistent with observation. The tensor
to scalar ratio of perturbations is generally very low in this scenario. The
COBE normalization, however, poses certain difficulties which can be
circumvented provided model parameters are properly fine tuned. We find the
numerical values of parameters which can give rise to enough inflation,
observationally consistent values of density perturbations, scalar to tensor
ratio of perturbations and the spectral index .Comment: 7 pages and nine figures; typos corrected, minor comments and
clarifications added, revised version to appear in PL
India-Vietnam Relations: Prospects and Challenges
Introduction
The India-Vietnam relationship is one of the most significant bilateral relationships in Asia, besides the India-Japan partnership. Over the years, in particular since the establishment of diplomatic relations between the two on 7 January 1972, this bilateral tie has assumed robustness in a number of areas, ranging from politico-strategic, defence to economic areas as well as culture, education, training, entrepreneurship development, etc.
There have been continual exchanges of visits of top leaders between the two countries on a regular basis, further cementing the mutual ties and seeking newer means to explore the new vistas so that both can maximize mutual gains. It would not be wrong to say that no other country within the ASEAN grouping has received the kind of importance and undivided attention that Vietnam is getting from India. This is the reason that makes India-Vietnam relations something very special.
DOI: 10.5281/zenodo.340592
Short range correlations in relativistic nuclear matter models
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. It is shown that the
correlations give rise to an extra node in the ground-state wave-function in
the nucleons, contrary to what happens in non-relativistic calculations with a
hard core. The effect of the correlations in the ground state properties of the
nuclear matter and neutron matter is studied. The nucleon effective mass and
equation of state (EOS) are very sensitive to short range correlations. In
particular, if the pion contact term is neglected a softening of the EOS is
predicted. Correlations have also an important effect on the neutron matter EOS
which presents no binding but only a very shallow minimum contrary to the
Walecka model.Comment: 8pages, 4 figure
Primary Amoebic (Naegleria fowleri) Meningoencephalitis Presenting as Status Epilepticus
Primary amebic meningoencephalitis (PAM) is a rare entity. Usual presenting features are fever, headache and seizures with meningeal signs and this disease carries high mortality rate. We present a case report of PAM presenting as status epilepticus
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