ar X iv : h ep - t h / 96 10 06 1 v 1 9 O ct 1 99 6 Stimulated emission of particles by 1 + 1 dimensional black holes ∗

ar X iv : h ep - t h / 98 10 03 9 v 1 6 O ct 1 99 8 Remarks on Nöther charges and black holes en - tropy

We criticize and generalize some properties of Nöther charges presented in a paper by V. Iyer and R. M. Wald and their application to entropy of black holes. The first law of black holes thermodynamics is proven for any gauge-natural field theory. As an application charged Kerr-Newman solutions are considered. As a further example we consider a (1 + 2) black hole solution. 1

ar X iv : h ep - t h / 96 10 03 1 v 1 7 O ct 1 99 6 INJE – TP – 96 – 5 Higher dimensional extremal black strings

We investigate the five and six-dimensional black strings within EinsteinMaxwell theory. The extremal black strings are endowed with the null Killing symmetry. We study the propagation of Einstein-Maxwell modes in the extremal black string background by using this symmetry. It turns out that one graviton is a propagating mode, while both the Maxwell(F) and three-form (H) fields are non-propagat...

ar X iv : h ep - p h / 99 10 24 8 v 1 6 O ct 1 99 9 1 Effect of σ ( 600 ) - Production in pp̄ → 3 π 0 at rest

ar X iv : h ep - t h / 96 08 00 7 v 1 1 A ug 1 99 6 A semi - classical relativistic black hole ∗

A new two-dimensional black hole model, based on the " R = T " relativistic theory, is introduced, and the quantum massless scalar field is studied in its classical gravitational field. In particular infrared questions are discussed. The two-point function, energy-momentum tensor, current, Bogoliubov transformations and the mean number of created particles for a given test function are computed...

ar X iv : a st ro - p h / 96 12 22 0 v 1 2 3 D ec 1 99 6 BLACK HOLES : FROM GALACTIC NUCLEI TO ELEMENTARY PARTICLES 1

We present a broad review on black holes. We analyse some of the fundamental concepts in black hole theory, the observational and theoretical status of stellar and galactic black holes, and their appearance