Superspace WZW Models and Black Holes
We show how to write an off-shell action for the $SU(2)\times U(1)$ supersymmetric WZW model in terms of $N=2$ chiral
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Answer sourceWe show how to write an off-shell action for the $SU(2)\times U(1)$ supersymmetric WZW model in terms of $N=2$ chiral
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Supersymmetric radiative corrections to top quark and Higgs boson physics
In this Thesis we have investigated some effects appearing in top quark observables in the framework of the Minimal Supersymmetric
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The analysis of giant HII regions using photoionization models
After briefly reviewing the impact of various parameters on photoionization models, we illustrate the importance of the nebular geometry by
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The BeppoSAX X-ray spectrum of the remnant of SN 1006
We present BeppoSAX X-ray spectra of the remnant of the supernova of AD 1006, which cover a broad spectral range
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The Breakout of Protostellar Winds in the Infalling Environment
The time of protostellar wind breakout may be determined by the evolution of the infalling flow, rather than any sudden
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The circumstellar envelope of AFGL 4106
We present new imaging and spectroscopy of the post-red supergiant binary AFGL 4106. Coronographic imaging in H-alpha reveals the shape
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The double role of Einstein's equations: as equations of motion and as vanishing energy-momentum tensor
Diffeomorphism covariant theories with dynamical background metric, like gravity coupled to matter fields in the way expressed by Einstein-Hilbert's action
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The Last Eight Minutes of a Primordial Black Hole
About eight minutes before a black hole expires it has a decreasing mass of 10^{10} g, an increasing temperature of
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The local atomic quasicrystal structure of the icosahedral Mg25Y11Zn64 alloy
A local and medium range atomic structure model for the face centred icosahedral (fci) Mg25Y11Zn64 alloy has been established in
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The rapid evolution of the born-again giant Sakurai's object
The extraordinarily rapid evolution of the born-again giant Sakurai's object can be traced both in a continued cooling of the
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The Size Distribution of Superbubbles in the Interstellar Medium
We use the standard, adiabatic shell evolution to predict the size distribution N(R) for populations of SN-driven superbubbles in a
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The Soft R'egime in NRQCD
A Lagrangean and a set of Feynman rules are presented for Non-Relativistic QCD with manifest power counting in the heavy
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The Transverse Cross Section in Exclusive Vector-Meson Production
We show that the ratio of the transverse to the longitudinal cross sections observed at HERA cannot be reproduced by
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The violation of the Hund's rule in semiconductor artificial atoms
The unrestricted Pople-Nesbet approach for real atoms is adapted to quantum dots, the man-made artificial atoms, under applied magnetic field.
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The $Ξ·^\prime g^* g^{(*)}$ Vertex Function in Perturbative QCD and $Ξ·^\prime$-Meson Mass Effects
The $Ξ·^\prime g^* g^{(*)}$ effective vertex function (EVF) is calculated in the QCD hard-scattering approach, taking into account the $Ξ·^\prime$-meson
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Thomas-Fermi Theory of the Hyperfine Constants of Endohedral Fullerene Atoms
We present a modified Thomas-Fermi theory that describes the increase of the hyperfine coupling constants of endohedrally enclosed atoms. We
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Tidal torques and the clusters of galaxies evolution
We study the effect of tidal torques on the collapse of density peaks through the equations of motion of a
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Tidal torques dynamical friction and the structure of clusters of galaxies
We study the joint effect of tidal torques and dynamical friction on the collapse of density peaks solving numerically the
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Towards a theory of thin self-gravitating crossing shells
In the case of crossing thin dust shells the momentum conservation law is found. For two crossing isotropic shells it
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Towards the mass spectrum of quantum black holes and wormholes
The quantum black hole model with a self-gravitating spherically symmetric thin dust shell as a source is considered. The shell
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Transfer matrix of a spherical scatterer
We derive the off-shell scattering matrix for a spherical scatterer. The result obtained generalizes the off-on-shell matrix commonly used in
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Two and three-fermion 3D equations deduced from Bethe-Salpeter equations
We write a 3D equation for three fermions by combining the three two-body potentials obtained in 3D reductions (based on
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Untwisting the twistor superstring
The twistor superstring, which describes N=4 super Yang-Mills trees, is taken off-shell (for loops) by generalizing Penrose twistors (which describe
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Using Numerical Simulations to Gain Insight into the Structure of Superbubbles
Recent high resolution observations of Galactic superbubbles have motivated us to re-examine several classes of superbubble models. We compare three
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