By C. Mahaux, R. Sartor (auth.), Madeleine Soyeur, Hubert Flocard, Bernard Tamain, Madeleine Porneuf (eds.)

The wintry weather college "Nuclear subject and Heavy Ion Collisions", a NATO examine Workshop held at Les Houches in February 89, has been dedicated to contemporary advancements in nuclear subject thought and to the learn of relevant heavy ion collisions within which quasi­ macroscopic nuclear structures could be shaped at a number of temperatures and densities. At in­ cident energies lower than a hundred Me V according to nucleon, the kinematic stipulations are beneficial for generating brief scorching nuclei with temperatures of the order of some MeV. At better ener­ gies (100 MeV < E/A < 1-2 GeV) heavy ion collisions provide the potential of investigating the homes of sizzling and dense nuclear structures. The Workshop has been prompted through very important theoretical advancements in delivery equations whicll give the opportunity to narrate microscopic descriptions of heavy ion collisions to nuclear topic conception and through the necessity to assessment the massive physique of knowledge on hand on heavy ion collisions and talk about destiny experimental courses. This dialogue used to be specially well timed a number of months sooner than the recent SIS/ESR Heavy Ion Fa.cility starts off working in Darmstadt. the college consisted regularly of sequence of lectures on nuclear topic, shipping equations and the dynamics of heavy ion collisions. the information and their interpretation have been exten­ sively mentioned; the data carried by way of a few of the sorts of debris emitted through the collisions (photons, lepton pairs, pions, hons, nucleons, fragments) has been particu­ larlyemphasized. really expert subject matters have been awarded as shorter contributions through participants.

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Extra info for Nuclear Matter and Heavy Ion Collisions: Proceedings of a NATO Advanced Research Workshop on Nuclear Matter and Heavy Ion Collisions, held February 7–16, 1989, in Les Houches, France

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17 that the average depletion of the Fermi sea, lCBHF' is underestimated when this standard choice is adopted. Related1y, the corresponding momentum distribution n (k) , calculated from the standard choice of U (k) , does not have a vertical slope at k = kF ' whereas the exact one has a vertical slope (Fig. 1); the imaginary part of the mean field does not vanish at the Fermi energy as it should (Eq. 17», etc. Hence, the standard choice does not lend itself to a simultaneous investigation of the binding energy, of the mean field, of the momentum distribution and of related quantities, for instance the spectral function.

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Note that eq. (1) resembles massive QED with an additional scalar interaction, so the relativistic quantum field theory generated by this Lorentz invariant lagrangian is renormalizable. ,p = 0 . (a~a~ b~(ia~ - (2) (3) (4) Equation (2) is simply the Klein-Gordon equation with a scalar source. Equation (3) looks like massive QED with the conserved baryon current (5) rather than the (conserved) electromagnetic current as source. Finally, eq. (4) is the Dirac equation with scalar and vector fields introduced in a minimal fashion.

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