NORDITA   NEWS   1996 / 2                       April 1, 1996

NORDITA'S BOARD
At a meeting on March 5th, the Nordic Council of Ministers (MR-U) decided on a new structure for the boards of a number of Nordic institutions, among them Nordita. In future, Nordita's Board will consist of 5 members, one from each of the Nordic countries. The members of the new Board which has now been appointed are:

Denmark: Ole Hansen, Copenhagen
Finland: Vesa Ruuskanen, Jyväskylä
Iceland: Thordur Jonsson, Reykjavik
Norway: Kaare Olaussen, Trondheim
Sweden: Roland Svensson, Stockholm

Their deputies are:
Denmark: Aksel Stenholm Jensen, Aarhus
Finland: Dan Olof Riska, Helsinki
Iceland: Vidar Gudmundsson, Reykjavik
Norway: Jan Vaagen, Bergen
Sweden: Petter Minnhagen, Umeå

The Board is expected to meet within the next few months, but as yet no date has been fixed.

BALTIC STIPENDIATES AT NORDITA
A new Nordita program of stipendiates from the Baltic countries and NW Russia is starting in 1996. The program is financed by the Nordic Council of Ministers (NCM) through its Nordic Scholarship Scheme for the Baltic Countries and Northwest Russia. The funding for 1996 is rather modest, amounting to roughly one man-year at a salary which barely covers the living costs in Copenhagen. Nevertheless, the program will hopefully expand in step with the developing contacts between the Nordic countries and its eastern neighbors.

The fellowships were announced at the beginning of January. The information was quickly and widely distributed by email using the address data base set up by Nordita's Nordic-Baltic Committee. The Committee and the Nordita faculty evaluated the 16 applications in early February, and the Board made its decision in the beginning of March. It was decided to award 6 three month fellowships at Nordita, by adding some extra support from Nordita's regular visitor program. The new fellows are: P. Helde and M. Rozman (Institute of Physics, Estonian Academy of Sciences, Estonia), A. Afanasjevs (Nuclear Research Center, Latvian Academy of Sciences, Latvia), A. Bernotas (Institute of Theoretical Physics and Astronomy, Lithuania), A. Y. Potekhin (Ioffe Physical-Technical Institute, St. Petersburg, Russia), N. A. Kivel (Petersburg Nuclear Physics Institute, Russia).

DMITRI KVESHCHENKO NEW ASSISTANT PROFESSOR AT NORDITA
We are pleased to announce that Dmitri (Dima) Kveshchenko has accepted a position as assistant professor at Nordita. He was trained at the Landau Institute in Moscow, and has held post-doctoral positions at the ETH in Zurich, and at Princeton University. At the moment he is a visiting scientist at Nordita, and he is expected to take up the assistant professorship on September 1 1996. He brings expertise in strongly correlated electronic systems, a new frontier in condensed matter physics. The quantum Hall effect and high temperature super-conductivity are his areas of special interest. Dima would like to bring everyone up to date about his work, and discuss future plans. Please contact him at Nordita, khvesh@nordita.dk, to arrange a visit, and perhaps start or join some new projects.

PHYSICAL SOCIETIES MEET AT NORDITA
Representatives of the Nordic and Baltic physical societies met at Nordita on Saturday 9 March 1996. The participants were J. Bohr (DK), J. Kikas (EE), M. Paalanen (FI), A. Olafsson (IS), Z. Rudzikas (LT), M. Auzinsh (LV), T. Henriksen (NO), A. Barany (SE), E. Osnes (EPS) and P. Hoyer (Nordita). Among the measures suggested to improve contacts and collaboration were:

- Crosslinking of the home pages of the physical societies, EPS and Nordita.
- Sharing of articles between the newsletters of the physical societies.
- Use of Nordita News for the distribution of information of general Nordic interest.
- Having representatives of the physical societies on the Advisory Boards of the society physics meetings.
- Joint competitions and schools for young physicists.

The Physical Society Contact Group will continue its work to improve contacts between the societies and physicists. Prof. Mikko Paalanen was elected chairman for the coming year. The next meeting will be held in Finland in March 1997, in connection with the Finnish Physical Days marking the 50th anniversary of the Finnish Physical Society.

Items for Nordita News
If you have any information about meetings, etc. that would be useful to include in Nordita News, please send it to Nordita, att.: Jette Nielsen, Blegdamsvej 17, DK-2100 Copenhagen OE, Denmark or by e-mail: nielsen@nordita.dk. Nordita News appears on the first day of even numbered months, and material should be sent at least 3 weeks before the publication date.

Electronic Nordita News
If you wish to subscribe to an electronic version of Nordita News, contact: Jette Nielsen, email: nielsen@nordita.dk.

COURSES / CONFERENCES / WORKSHOPS

ELFE PHYSICS AT NORDITA
Nordita is participating in the EU TMR network `Hadronic Physics with High Energy Electromagnetic Probes'. This network joins 12 centers and about 200 physicists in Europe in experimental and theoretical studies of physics with electron accelerators of high intensity and duty factor in the 15- 30 GeV energy range. As part of this program, Dr. Stephane Peigne (Orsay) will work at Nordita as a postdoctoral fellow from the fall of 1996. More information about the network can be found in http://www.nikhef.nl/pub/projects/hapheep/.

In a related effort, Paul Hoyer is member of an `Initiative Group' appointed by the Nuclear Physics European Collaboration Committee (NuPECC) for the purpose of preparing a proposal for an 'ELFE' (Electron Laboratory for Europe) accelerator at DESY in Hamburg. ELFE would take advantage of the proposed DESY Linear Collider to accelerate electrons to 15 -30 GeV and then inject them into the HERA electron ring to achieve a high duty factor by slow extraction. Nordic participation in the planning of ELFE is welcome, please contact Paul Hoyer.

STRANGENESS AND DENSE MATTER
Nordita, Copenhagen, April 17-18 1996.
During the week beginning April 15, Wolfram Weise, one of Nordita's Adjunct Professors, will be at Nordita, and on April 17-18 it is planned to hold a small workshop on strangeness and dense matter. Topics that it is intended to discuss include: Kaon-baryon systems at low energy. Kaon-nuclear interactions. Kaons in dense matter. Properties of hadrons in dense matter. Hyperon interactions. Astrophysical aspects. Invited speakers are amongst others: M. Rho, A. Gal, J. Schaffner, I. Mishustin, N. Kaiser, T. Waas, J. Sollfrank, O. Elgaroy.

The workshop is being organized by J. Bijnens, H. Heiselberg, C. J. Pethick, and W. Weise. If you wish for further information, or wish to participate, contact Chris Pethick (pethick@nordita.dk) or see http://www.nordita.dk/~hh/sm.html.

WORKSHOP ON INITIAL CONDITIONS AND EARLY EVOLUTION IN HIGH ENERGY NUCLEAR COLLISIONS
Nordita, June 10-12, 1996.
Organizers: Henning Heiselberg and Larry McLerran.
A small workshop on ``Initial conditions and early evolution in high energy nuclear collisions'' will be arranged in connection with Larry McLerran's stay at Nordita in June. The following topics will be discussed: small x physics, nuclear effects on structure functions, parton-parton scatterings and radiative processes in the very early stages of high energy nuclear collisions. Applications to minijet production and subsequent expansion, thermalization, dilepton production etc. will be emphasized. It is intended to have a few talks in the mornings and discussions at the blackboard in the afternoons.

Preliminary list of participants: Kari Eskola, Gosta Gustafsson, Keijo Kajantie, Andrei Leonidov, Larry McLerran, Vesa Ruuskanen, Helmuth Satz, Raju Venogupolan and a few more invited speakers. Locally also: Jacob Bondorf, Igor Mishustin, Axel Vischer, and Jurgen Schaffner from NBI and Hans Bijnens, Vladimir Braun, Per Ernstroem, Henning Heiselberg, Paul Hoyer, and Mikko Vaenttinen from Nordita. Anyone interested, in particular from our Nordic network on Relativistic Heavy Ion Collisions, is most welcome.
Program details can be found on http://www.nordita.dk/~hh/worksh.html.

NORDIC SYMPOSIUM ON GALAXY EVOLUTION
Nordita, Copenhagen, June 11 - 15, 1996.
A Nordic Symposium on Galaxy Evolution will be held at Nordita, Tuesday June 11 (pm) to Sat June 15 (am), covering topics in Galactic Dynamics, Supernovae and Chemical Evolution, Dwarf Galaxies, and Extragalactic Backgrounds. The organizers are: Bernard Pagel, Johannes Andersen, Bengt Gustafsson, David Lambert, Poul-Erik Nissen, Igor Novikov and Jesper Sommer-Larsen. Confirmed speakers (apart from the above) include Ed Baron, John Beckman, Nils Bergvall, Axel Brandenburg, Cesare Chiosi, Karl Donner, Eli Dwek, Mike Edmunds, Jaan Einasto, Chris Flynn, Claes Fransson, Burkhardt Fuchs, Gerry Gilmore, Gerhard Hensler, Uffe G. Joergensen, Bernard Jones, Kimmo Kaasalainen, Sasha Kashlinsky, Dan Kiselman, Malcolm Longair, Michel Mayor, Birgitta Nordstroem, Hans Ulrik Noerregaard-Nielsen, Erik Olsen, Max Pettini, Bertrand Plez, Evan Skillman, Roberto Terlevich, Magnus Thomasson, Roland Wielen, Anders Winnberg and Rosemary Wyse. Further information can be obtained from B. Pagel (pagel@nordita.dk.)

ORIGIN OF MASSES
Tartu, Estonia, June 19-22, 1996.
The workshop will follow right after the Helsinki conference ``Neutrino 96" and focus on mass generation in the electroweak theory, and neutrino masses. It is funded through the NORDITA-sponsored Nordic Project ``Fundamental Constituents of Matter" and NorFA. The workshop is being organized by C. Jarlskog, P. Kuusk, J. Maalampi and P. Osland. If you are interested in attending, please contact Per.Osland@fi.uib.no or one of the other organizers. The deadline for application is May 1, 1996. Travel and accommodation information will be available at http://www.fi.uib.no/~osland/tartu.html

WORKSHOP ON RENORMALONS AND POWER CORRECTIONS IN QCD
Nordita, Copenhagen, August 1-3, 1996.
LEP, HERA and the TEVATRON are performing precise measurements that test the limits of our understanding of QCD. It has become possible in several cases to observe corrections to factorization theorems, and to test known prescriptions for partial resummations of perturbation theory. This workshop will be devoted to the intense theoretical activity that has accompanied the increased precision of experiments. Discussions will include: power corrections without the operator product expansion, in particular jet physics; higher twist effects; estimates of high orders of perturbation theory; scale fixing prescriptions, and other theoretical tools to sharpen the predictions of perturbative QCD.

The workshop is intended to be both a forum for discussions among the experts currently working in the field, and an occasion for other people involved in QCD phenomenology to get better acquainted with these topics, which have been the focus of a lot of recent interest.

For more informations, an application form, and a list of speakers, point your browser to http://www.nordita.dk:80/~leif/PowerQCD/ or contact Vladimir Braun, vbraun@nordita.dk, or Lorenzo Magnea, magnea@nbivax.nbi.dk.

VISITORS AT NORDITA / NBI / CATS / TAC

The fields are listed after the names as: A (Astrophysics), C (Complex Systems & Chaos), N (Nuclear Physics), P (Particle Physics), and S (Condensed Matter Physics).
If you are interested in having any of these people visit your institute, please contact NORDITA.

LONG-TERM VISITORS AT NORDITA

VISITORS OUTSIDE NORDITA

PREPRINTS / REPRINTS

P. Di Vecchia, L. Magnea, A. Lerda, R. Russo, and R. Marotta: String techniques for the calculation of renormalization constants in field theory. 95/86.

M. Billo, M. Casella, A. D'Adda, and S. Panzeri: Toward an analytic determination of the deconfinement temperature in SU(2) lattice gauge theory. 96/1.

A. Brandenburg: Is Cowling's anti-dynamo theorem valid near a rotating black hole ? 96/2.

P. Ernstroem, P. Hoyer, and M. Vaenttinen: Charmonium production via fragmentation at higher orders in $\alpha_{s}$. 96/3.

F.V. Kusmartsev: Fluctuative mechanism of vortex nucleation in the flow of $^{4}He$. 96/4.

M. Abramowicz, A. Brandenburg, and J.-P. Lasota: The dependence of the viscosity in accretion dicscs on the shear/vorticity ratio. 96/5.

A. Brandenburg, K. Enqvist, and P. Olesen: Large scale magnetic fields from hydromagnetic turbulence in the very early universe. 96/6.

M.S. Miesch, A. Brandenburg, and E.G. Zweibel: Nonlocal transport of passive scalars in turbulent penetrative convection. 96/7.

A. Bramon, P. Gosdzinksy, and S. Tortosa: Chiral perturbation theory predictions for $\eta \rightarrow \pi^{+} \pi^{-} \pi^{0} \gamma$. 96/8.

H.S. Brandi, B. Koiller, and E.R. Mucciolo: Laser-induced quantum chaos in 1-D crystals. 96/9.

P. Ball and V.M. Braun: The $\rho$ meson light-cone distribution amplitudes of leading twist revisited. 96/10.

R. Jimenez, P. Thejll, U.G. Joergensen, J. MacDonald, and B. Pagel: Ages of globular clusters: a new approach. 96/11.

A. Kashlinsky, J.C. Mather, S. Odenwald, and M. Hauser: Clustering of diffuse infrared background light. 96/12.

B. Pagel: Abundances and globular cluster ages. 96/13.

K. Johnsen and J. Yngvason: Density matrix functional calculations for matter in strong Magnetic fields: I. Atomic properties. 96/14.

A. Brandenburg, Aa. Nordlund, R. Stein, and U. Torkelsson: Dynamo generated turbulence in discs. ``Small-scale structures in three-dimensional hydro and magnetohydrodynamic turbulence'', eds. M. Meneguzzi, A. Pouquet, \& P.-L. Sulem, Lecture notes in physics 462, Springer-Verlag (1995) 385-390.

A. Brandenburg, D. Moss, and A. Shukurov: Galactic fountains as magnetic pumps. M.N.R.A.S. 276 (1995) 651-662.

D. Moss and A. Brandenburg: The generation of nonaxisymmetric magnetic fields in the giant planets. Geophys. Astrophys. Fluid. Dyn. 80 (1995) 229-240.

M. Miesch, A. Brandenburg, E. Zweibel, and J. Toomre: Non-local transport in turbulent MHD convection. Proceedings of fourth SOHO Workshop: Helioseismology ESA SP-376, 2, Pacific Grove, California (1995) 253-260.

A. Brandenburg, R. Jennings, Aa. Nordlund, M. Rieutord, R. Stein, and I. Tuominen: Magnetic structures in a dynamo simulation. J. Fluid. Mech. 306 (1996) 325-352.

A. Brandenburg, Aa. Nordlund, R.F. Stein, and U. Torkelsson: The disk accretion rate for dynamo generated turbulence. Astrophysical Journal Letters 458 (1996) 45-48.

H. Heiselberg: Quark matter structure in neutron stars. Proc. of Strangeness and Quark Matter, eds. G. Vassiliadis, A.D. Panagiotou, S. Kumar and J. Madsen, World Scientific (1995) 298-307.

H. Heiselberg: Quark matter droplet formation in neutron stars. Proc. of Strangeness and Quark Matter, eds. G. Vassiliadis, A.D. Panagiotou, S. Kumar and J. Madsen, World Scientific (1995) 338-342.

G. Baym, B. Blaettel, L.L. Frankfurt, H. Heiselberg, and M. Strikman: Correlations and fluctuations in high-energy nuclear collisions. Phys. Rev. C52 (1995) 1604.

S. Franz and G. Parisi: Recipes for metastable states in spin glasses. J. Phys. I. France 5 (1995) 1401.

I. Pesando: Exact results for the supersymmetric G$_{2}$ gauge theories. Mod. Phys. Lett. A10 (1995) 1871-1886.

I. Pesando: The generalized gross-neveu model on the light cone. Mod. Phys. Lett. A10 (1995) 2339-2352.

I. Pesando: The gross-neveu model on the light cone. Mod. Phys. Lett. A10 (1995) 525-538.

OVERVIEW OF FUTURE NORDITA AND OTHER CONFERENCES

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