Le Sigma

Etudes sur le ground palais de Constantinople

Οι βυζαντινοί αυτοκράτορες και το θέλγητρον του μοναστηριού

Un irresistible elan a incontestablement pousse a Byzance les ames vers le cloitre, refuge repute inviolable contre les vicissitudes du sort et regarde comme un asile preservant des mutilations et de la mort. En general, celui qui entrait au couvent se resignait a son nouveau sort et ne tentait pas de rentrer dans le monde. Le couvent etait le mtilleur moyen de se debarrasser sans rigueurs inutiles d’un rival, d’un adversaire ou d’un personnage turbulent. L’auteur etudie ensuite les empereurs, imperatriees, princes et princesses du sang et autres membres de la famille imperiale qui entrerent au couvent, a part de tres rares exceptions, contraints et forces

Medium effects in high energy heavy-ion collisions

The change of hadron properties in dense matter based on various theoretical approaches are reviewed. Incorporating these medium effects in the relativistic transport model, which treats consistently the change of hadron masses and energies in dense matter via the scalar and vector fields, heavy-ion collisions at energies available from SIS/GSI, AGS/BNL, and SPS/CERN are studied. This model is seen to provide satisfactory explanations for the observed enhancement of kaon, antikaon, and antiproton yields as well as soft pions in the transverse direction from the SIS experiments. In the AGS heavy-ion experiments, it can account for the enhanced $K^+/\pi^+$ ratio, the difference in the slope parameters of the $K^+$ and $K^-$ transverse kinetic energy spectra, and the lower apparent temperature of antiprotons than that of protons. This model also provides possible explanations for the observed enhancement of low-mass dileptons, phi mesons, and antilambdas in heavy-ion collisions at SPS energies. Furthermore, the change of hadron properties in hot dense matter leads to new signatures of the quark-gluon plasma to hadronic matter transition in future ultrarelativistic heavy-ion collisions at RHIC/BNL.Comment: RevTeX, 65 pages, including 25 postscript figures, invited topical review for Journal of Physics G: Nuclear and Particle Physic

Track D Social Science, Human Rights and Political Science

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/138414/1/jia218442.pd