18828906
Temperature Dependence of Hadron Masses from the Zimanyi-Moszkowski Model
An extended version of the Zimanyi-Moskowski (ZM) model has been used to calculate the temperature dependence of the hadronic masses. The calculation of meson masses in the Random Phase Approximation (RPA) gives an increase in the $\sigma$, $\omega$ and $\pi$ effective masses with temperature.
119328473
QCD phase transition in rotating neutron star, neutrino beaming and gamma-ray bursters
We have studied the emission of neutrinos from a rotating hybrid star. We find that the emission is predominantly confined to a very small angle, provided the core of the star is in a mixed phase of quarks and hadrons and the size of such a mixed phase is small. Annihilation of neutrinos to produce gamma rays has been discussed. The estimated duration of the burst is found to be within the observational range.
120475092
Consequences of Quark-Hadron Phase Transition in Dense Stars
The deconfinement phase transition in a rotating compact star and its consequences on neutrino emission have been studied. It has been found that rotating twin star solutions are obtained upto Ω ≈ 4000s−1. For faster rotating stars no twin solution is obtained. The neutrino emission shows a strong directionality.
122920137
Tunneling in magnetic fields
Tunneling effects in external magnetic fields are discussed in the model problem of a charged particle on a vertical rotating circle in a uniform gravitational field. The magnetic fields used are the ones for the monopole and a certain solution that arises in the context of the classical Weinberg-Salam model. Using instanton methods and the Gaussian approximation, various consequences regarding the tunnelling amplitudes and the level splittings in the presence of magnetic fields are obtained.
6848119
Relics of cosmic quark-hadron phase transition and massive compact halo objects
Abstract We propose that the cold dark matter (CDM) is composed entirely of quark matter, arising from a cosmic quark-hadron transition. We show that compact gravitational objects, with masses around 0.5 M ⊙ , could have evolved out of the such CDM.
117589122
In-medium effects on the {phi} meson
The temperature dependence of the {phi} meson mass and its decay width ({phi}{r_arrow}K{bar K}) have been studied from an effective nonlinear chiral Lagrangian in SU(3). The effective mass has been obtained from the pole position of the full propagator. The width has also been calculated. It has been found that the mass decreases with temperature very slowly whereas the decay width increases quite sharply. Possible consequences on the QGP signals are discussed. {copyright} {ital 1997} {ital The American Physical Society}
27271627
Attractive holographic c-functions
A bstractUsing the attractor mechanism for extremal solutions in N=2$$ \mathcal{N}=2 $$ gauged supergravity, we construct a c-function that interpolates between the central charges of theories at ultraviolet and infrared conformal fixed points corresponding to anti-de Sitter geometries. The c-function we obtain is couched purely in terms of bulk quantities and connects two different dimensional CFTs at the stable conformal fixed points under the RG flow.