NORDITA NEWS 2000/6, 2001/1
February 1, 2001
New Assistant Professor in Condensed Matter at Nordita
We welcome Vadim Cheianov as assistant professor of condensed matter physics. He was born in St. Petersburg, Russia in 1973, and graduated from St. Petersburg Technical University in 1995 with a masters degree in physics and engineering. The Physical-Technical Faculty was supervised by Zhores Alferov (the director of the Ioffe Institute and last year's Nobel Prize winner) and basically was shared between the University and the Ioffe Institute. In 1996 he started at the Institute for Theoretical Physics, Uppsala University, as a graduate student (advisor Anton Alekseev). He defended his thesis in 1999 and immediately entered a postdoctoral position at the Ørsted Lab with Henrik Bruus and Karsten Flensberg. His main research interests are mesoscopic physics, quantum physics in low dimensions, physics of correlated systems, applications of field theory in condensed matter. His e-mail address is cheianov@nordita.dk.
Nordita Becomes EU Training Site
Nordita is an EU Marie Curie Training site in "Field Theory in Particle and Nuclear Physics" for the next four years. Nordita will be funded by the EU to host students from the EU and Associated Countries for a period of three to twelve months. For more information the link to the Nordita advertissment may be found at http://www.nordita.dk/positions.
Nordic Projects and Corresponding Fellows 2001
At the Nordita board meeting on 27 October 2000, Nordita's board decided to support the following new Nordic projects "Confined Electronic Systems", organizer Vidar Gudmundsson and "Neutrino Physics and Cosmology" organized by Kimmo Kainulainen. In addition Stephanie Reimann (Lund) and Erik Aurell (Stockholm) were each awarded a corresponding fellowship in 2001. Descriptions of the new projects and introductions to the new corresponding fellows are given below.
Neutrino Physics and Cosmology
Organizer Kimmo Kainulainen, Nordita.
The research interests of the project include theoretical schemes for neutrino mixing and oscillations and study of their effects in earthbound laboratories, in astrophysical objects and in the early universe. Also we study the physics related to cosmic microwave background radiation, extremely high energy neutrinos, nucleosynthesis, dark matter and cosmological parameters.
The most important event in year 2001 will be the workshop on neutrino physics and cosmology to be held in Copenhagen in June 11-22, 2001. This event will combine our annual internal meeting with a two-week long international workshop, and is jointly organized with the european science foundation (ESF) network on neutrino physics. The program of the workshop will include several series of lectures as well as review and contributed talks on various topics mentioned above. In addition the project will continue to finance travel between network nodes for student members. Organizer: K. Kainulainen, e-mail: kainulai@nordita .dk.
Confined Electronic Systems
Organizer Vidar Gudmundsson, Reykjavik.
With the continuing progress in nanostructure technology the border-lines between the physics of condensed matter, and few-body quantum systems, such as atoms and atomic nuclei, are crossed. Much of the many-body physics developed for understanding atoms or nuclei can be applied to describe quantum dots, wires, or clusters, and in turn, much fundamental insight has been gained by experimental studies of low-dimensional quantum structures. The physics of finite quantum systems continues to produce many surprises. In the first year the project members coming from different areas of theoretical physics gathered at two meetings.Student and researcher mobility will be prominent in the second phase of the project with a possible meeting to be planned later. For further information contact Vidar Gudmundsson, e-mail:vidar@raunvis.hi.is.
New Corresponding Fellows at Nordita in 2001
Nordita welcomes Stephanie Reimann, Lund, and Eric Aurell, Stockholm, as new corresponding fellows at Nordita from 1 January 2001.
Stephanie Reimann studied at the University of Regensburg (Germany) where she got her doctorate in November 1995. She then came to Copenhagen to work as a post doc at the Niels Bohr Institute, commuting between Blegdamsvej and the Ørsted Laboratory. In 1999, she moved to Finland, where she had a "Marie Curie'' fellowship from the EU and stayed for two years at the University of Jyväskylä. She is presently working as a ''Forskarassistent'' at the Department of Mathematical Physics at Lund University. Her fields of interest are finite quantal systems, with a focus on nanostructured semiconductors (quantum dots and wires) and their many-body physics. Her future research in this area will include studies of the electronic and magnetic structure in quantum dot molecules and dot arrays and their applications. She recently also became interested in the structure of angular momentum in trapped atomic Bose-Einstein condensates. Her e-mail address is reimann@matfys.lth.se.
Erik Aurell was born in Gothenburg, Sweden, in 1961, and was educated in Sweden and France. He obtained his PhD from Göteborg University, Institute of Theoretical Physics, in the group of Prof. Stig Lundquist (1989). Since 1992 Erik has worked at the Department of Mathematics of Stockholm University, and has held secondary appointments with the Center for Parallel Computers, and, more recently, with the Swedish Institute of Computer Science, both also in Stockholm.
Erik's research career started in nonlinear physics and turbulence. Since moving to Stockholm, Erik has been actively involved in the early development of the field now known as "econophysics". He is a member of the Editorial Board of the International Journal of Theoretical and Applied Finance, and regularly lectures and supervises students in mathematical finance at Stockholm University and at KTH-Royal Institute of Technology.
Erik has worked with the biological physics group at Nordita since 1998, and at the same time started a collaboration with the Dept. of Neuroscience at the Karolinska Institute in Stockholm. The objective of his research programme at Nordita is to tie these two strands together, and to investigate mathematical models of biological switches and switch networks. His e-mail address is eaurell@nada.kth.se.
NORDITA WORKSHOPS 2001
Minisymposium on Computational Neuroscience
Nordita, January 27 - 28, 2001
A weekend minisymposium on computational (theoretical) neuroscience will
be held at Nordita (Saturday and Sunday), January 27-28. The speakers will
include a number of the leading workers in Europe in this growing field.
Everyone is welcome to come, listen, ask questions and discuss the problems
with the speakers and other participants. Financial support is available
for Nordic participants, especially for students who would like to learn
more about the field.
A schedule will be prepared soon; for now here is a list of the speakers
and (where known) the titles of their talks: David Horn (Tel Aviv University):
Network structure, the new hebbian rule and spatiotemporal activity patterns;
Zhaoping Li (University College London): Modeling early visual perceptual
learning; Andreas Herz (Humboldt-Univer-sität Berlin): Oscillation,
Resonance and Non-Synaptic Plasticity in the Hippocampus; Wulfram Gerstner
(EPF Lausanne): Signal transmission by spiking neurons; John Hertz (Nordita):
Synaptic dynamics, oscillations and encoding of odours in insect antenna
lobe; Misha Tsodyks (Weizmann Institute): Computations in recurrent networks
with dynamic synapses; Barry Richmond (NIMH): Neural spike times are described
exactly using a stochastic model. If you have questions, write to John
Hertz hertz@nordita.dk.For
help in making hotel reservations etc., write to Ellen Pedersen (pedersen@nordita.dk).
Workshop on Dynamos in the Laboratory, Computer and the
Sky
Nordita, March 15-17, 2001.
Laboratory, numerical and astrophysical dynamos operate in different corners of parameter space and lab dynamos probe astrophysical aspects inaccessible to the computer (large fluid Reynolds number) and vice versa (the magnetic Reynolds number in simulations can be several times larger than in current experiments). The purpose of the workshop is to identify and uncover problems relating laboratory and numerical dynamos to astrophysics. Organizer: Axel Brandenburg, brandenb@nordita.dk. Workshop secretary: Anne Lumholdt, lumholdt@nordita.dk. Information and registration: http://www.nordita.dk/Adm /Conf /Dynamo01.
Boiling Stars, Convection, Radiation, and
Magnetic Fields at Stellar Surfaces
Lund Observatory, April 6, 2001
Since there is now a certain concentration in our geographical area of persons with an interest in solar & stellar [magneto]-hydrodynamics, surface convection, line formation physics, spatial & spectral observations of solar & stellar granulation, and related topics, the time seems appropriate to meet for an informal gathering. The aim is to describe our different current projects, and to discuss which directions that might be most promising for future ones, considering possible collaborations, the availability of new instrumentation, and the possible involvement by new graduate students.
Suggested topics for presentation and discussion: Hydrodynamic atmosphere models and abundances; Large-scale models for oscillation and supergranulation; Simulations of whole stars; Overshoot and transport of dust; Convection and turbulence; Chromospheric models; Coding issues for parallel computers; The potential of the new Swedish solar telescope on La Palma; Absolute wavelength shifts to diagnose stellar granulation; Time variability of solar/stellar irradiance as a measure of surface convection; Temporal flickering of radial velocity as a measure of surface convection; Convection signatures in white-dwarf irradiance fluctuations & spectra; VLTI: Interferometric imaging of stellar surfaces during the next years; More distant future: The potential of extremely large telescopes.
List of confirmed and of invited speakers: M. Asplund; A. Brandenburg; B. Dorch; D. Dravins; B. Freytag; D. Kiselman; H.-G. Ludwig; Å. Nordlund; M. Steffen; S. Wedemeyer. Local organization and further information: Dainis Dravins & Hans-Günter Ludwig: dainis@astro.lu.se & hgl@astro.lu.se. http://nastol.astro.lu.se/~dainis/minisymp.html.
Nordic School on Atomic Quantum Gases and Matter Wave
Optics
Turku (Åbo), Finland, May 21-31 , 2001
The School is funded by NorFA and Nordita, and it is aimed at Nordic graduate students, young postdocs, or master students very close to their graduation, and planning to start graduate studies soon. We cover the costs of participation, housing and meals during the school, and contribute to the travel costs.
The purpose of the course is to give a basic education in the physics of dilute atomic gases and atom optics. Activity in this area has exploded following the experimental realization of Bose-Einstein condensation in atomic vapors in 1995. The target group is students at the Masters and Ph.D. levels, and postdocs.
Topics to be treated include: the basics of Bose-Einstein condensation; trapped Fermi gases; vortices, solitons, and other non-linear phenomena; atom optics; coherence and correlations; cold molecules; and future prospects.
The school program and other details are currently being prepared. The preliminary list of speakers include Henk Stoof from Utrecht and Juha Janavainen from Storrs, Connecticut, USA. The school will start with registration and dinner on Monday (May 21) evening (we recommend travelling on Monday), and ends around midday on Thursday (May 31).
The school is organised by Chris Pethick (Nordita, Copenhagen) and Kalle-Antti Suominen (University of Turku). The school secretary (in Copenhagen) is Hanne Bergen (email: bergen@nordita.dk). Deadline for applications is February 15th, 2001. Website: http://users.utu.fi/k/kalsuo/School/.
Workshop on Astrophysical Flows and Magnetic
Fields
Stockholm Observatory,
Saltsjöbaden, April 18 - 19, 2001
My 30th birthday is comming up (April 10th, 2001), and in conjunction with this, I'd like to invite my favourite science-friends and friends-in-science for a 1.5 day workshop of our favourite science :-) I've chosen the workshop title to be quite broad to accommodate the current wide range of our interests in astrophysical MHD, convection and turbulence phenomena, which never the less have many things in common (problems as well as solutions).
For some this might also present a last chance to visit Stockholm Observatory in the the picturesque Saltsjöbaden while it is still in operational mode: Sometime during the summer all the astronomers will move to a more modern site just north of town.
Workshop format: The format is a no-budget workshop: That means that the participants will arrange and pay (or make their institutes pay) their own travel and accommodation. What will be provided are help and suggestions on how to arrange the basics. The LOC (I) will only arrange the environment of the workshop, i.e. seminar room, equipment, "conference dinner" and an excursion to the Virtual Reality Cave (the Cube) at the Parallel Computing Center (PDC).
Participation: People interested in participating in the workshop should register themselves at the workshop webpage a.s.a.p. http://www.astro.su.se/~dorch/workshop/frontpage.html. In the registration, those who want to give a talk, have the possibility to state a preferred duration of their contribution: However, the finally decided lengths of the talks will depend on the number of talks.
On the one hand, since this workshop is not funded it is entirely up to the participants to arrange their own travel and accommodation, on the other hand, there is no registration fee associated with participating in the workshop. Organizer Bertil Dorch.
NorFA Training Course in Quantum Field
Theory
in Particle and Condensed Matter
Physics
19 August - 1 September 2001, Hillerød,
Denmark
Summary: Ideas and methods originally developed in one subfield of theoretical physics are increasingly penetrating other subfields. Meanwhile, researchers are often not fully aware of the powerful methods and achievements gained by a neighbour community. An example is given by Quantum Field Theory which is exploited both in particle (or high energy) physics and in condensed matter physics. However, members of the two communities often do not know that "their" problem has sometimes already been considered or even solved, in fact under another title. The goal of this intensive course is to acquaint young researchers with powerful methods developed in another subfield but which could be of much help in their own research.
Attendance: The Course is for graduate students and post-docs who got their basic training either in condensed matter or subatomic physics. Participants from Nordic countries and Baltic/NW Russia are fully supported, including travel and lodging.
Where and when: The Course consists of 44 hours lectures plus 16 hours for questions and discussions with lecturers and for solving problems; the duration is 10 working days. It will take place in picturesque Hillerød near Copenhagen, on Aug 19 - Sep 1, 2001.
Main topics: 1. Renormalization group and theory of critical phenomena; 2. Lattice methods; 3. Field theories at non-zero temperatures; 4. Solitons, instantons and their quantization; 5. Quantum ano-malies in particle physics, quantum Hall effect and liquid helium; 6. Spin glasses; 7. Yang-Mills theory; 8. Spontaneous chiral symmetry breaking; 9. Superconductivity, `normal' and `colour'; 10. Specific field-theoretic models and their applications.
Though the lectures are intended to be pedagogical, the audience will be brought to the today's advanced level of research by active experts.
Lecturers: Vadim Cheianov (Nordita) - condensed matter and mathematical physics; Dmitri Diakonov (Nordita) - particle and quantum field theory; Hans Fogedby (Aarhus) - condensed mater physics; Hans Hansson (Stockholm) - quantum field theory; John Hertz (Nordita) - condensed matter physics and complex systems; Alan Luther (Nordita) - condensed matter physics; Kari Rummukainen (Nordita) - lattice theory.
Applications for post-docs: The application should contain the PhD Thesis title, where, when and under whose guidance the degree was obtained, and current research interests.
Applications for graduate students: The application should contain a short description of university training (only of relevance to the Course, with grades) and the PhD Thesis topic and scientific adviser (with e-mail address, please), as well as research interests.
The applications should be sent before 15 May 2001, either to the Course organizer Dmitry Diakonov, diakonov@nordita.dk or to the contact person in the country of residence.
Contact persons: Denmark: Prof. Hans Fogedby, fogedby@ifa.au.dk; Finland: Prof. Keijo Kajantie, kajantie@phcu.Helsin ki.fi; Iceland: Prof. Vidar Gudmundsson, vidar@raunvis.hi.is; Norway: Prof. Finn Ravndal, finnr@fys.uio.no; Sweden: Prof. Hans Hansson, hansson@physto.se; Estonia: Prof. Vladimir Hizhnyakov, hizh@fi.tartu.ee; Latvia: Prof. Eugene Kotomin, kotomin@acad.latnet.lv; Lithuania: Prof. Zenonas Rudzikas, tmkc@julius.ktl.mii.lt; NW Russia: Prof. Victor Petrov, victorp@thd.pnpi.spb.ru. Course organizer: Prof. Dmitry Diakonov (Nordita). A more detailed programme can be found at http://www.nordita.dk /meetings/hillerod0801.html.
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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,
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Visitors at Nordita 2001
http://www.nordita.dk/contact/visitors.html
| M. Kiselev | Wurzburg, CM | 29.01.01 - 01.02.01 |
| A. Ferriz-Mas | 05.02.01 - 12.02.01 | |
| S. Brooks | England, AP | 15.02.01 - 25.02.01 |
| K. Galsgaard | England, AP | 15.02.01 - 25.02.01 |
| J. Brinckmann | Karlsruhe, CM | 01.03.01 - 07.03.01 |
| A. Hermann | EPF Lausanne, CM | One week May |
| V. Petrov | St. Petersburg, HE | 5 weeks May-June |
| R. Arlt | AIP, Potsdam, AP | present - 26.01.01 |
| I. Dremin | Moscow, HE | present - 02.02.01 |
| S. Peigne | LAPP, Annecy, HE | present - 08.02.01 |
The fields are listed after the names: AP, astrophysics; C, Complex Systems & Chaos; NP, nuclear physics; HE, high energy physics; CM, condensed matter physics. If you are interested in having any of these people visit your institute, please contact NORDITA.
Long-term Visitors at Nordita
http://www.nordita.dk/contact/visitors.html
| R. Marotta | Italy | present - 01.03.01 |
| F. Orellana | Zuerich | present - 30.06.01 |
| N. Marchal | LAPTH, Annecy | present - 31.07.01 |
| D. Aristov | St. Petersborg | present - 01.08.01 |
| M. Bertolini | Italy | present - 31.10.01 |
| M. Hörnquist | Linköping | present - 31.12.01 |
| B. Dintrans | France | present - 30.06.02 |
| F. Sannino | Italy | present - 31.08.02 |
Nordita's Board will meet on 2 March 2001 in Copenhagen.
New reprints and preprints obtainable from Jette Nielsen, e-mail: nielsen@nordita.dk
K. Peeters, P. Vanhove, and A. Westerberg: Supersymmetric R4 actions and quantum corrections to superspace constraints. 2000/87.
F.J. Sanchez-Salcedo and A. Brandenburg: Dynamical friction of bodies orbiting in a gaseous sphere. 2000/88.
M.A. Zudov, J. Kono, A.P. Mitchell, A.H. Chin, and K. Johnsen: Non-perturbative terehertz sideband generation from bulk GaAs. 2000/89.
S.J. Brodsky, E. Chudakov, P. Hoyer, and J.M. Laget: Photoproduction of charm near threshold. 2000/90.
A. Brandenburg: Numerical simulations of turbulent dynamos. 2000/91.
M. Christensson, M. Hindmarsh, and A. Brandenburg: Inverse cascade in decaying 3D magnetohydrodynamic turbulence. 2000/103.
B. Dintrans and M. Rieutord: A comparison of the anelastic and subseismic approximations for low-frequency gravity modes in stars. 2000/104.
R. Ouyed: Can D-D fusion explain Jupiter's excess heat ? 2000/ 105.
R. Ouyed, J. Dey, and M. Dey: Strange-nova as inner engines for gamma-ray bursts. 2000/106.
R. Ouyed, J. Dey, and M. Dey: Strange-novae and the missing pulsar problem. 2000/107.
R. Ouyed and M. Butler: Rotating skyrmion stars: general features. 2000/108.
G.M. Kavoulakis, B. Mottelson, and S.M. Reimann: Low-lying excitations of a trapped rotating Bose-Einstein condensate. 2000/109.
M. Svart, R. Ouyed, and M. Christensen: Initial magnetic configurations for 3-dimensional simulations of astrophysical jets. 2000/110.
Å. Nordlund and Ö. E. Rögnvaldsson: Magnetic fields in young galaxies. 2000/111.
H. Dahle: Weighing 40 X-ray luminous clusters of galaxies with weak gravitational lensing. 2000/112.
D.V. Khveshchenko, A.G. Yashenkin, and I.V. Gornyi: Interacting random Dirac fermions in superconducting cuprates. 2000/113.
R. Casalbuoni, Z. Duan, and F. Sannino: Electroweak physics for color superconductivity. 2000/114.
A. Bardou, B.V. Rekowski, W. Dobler, A. Brandenburg, and A. Shukurov: The effects of vertical outflows on disk dynamos. 2000/115.
B.V. Rekowski, W. Dobler, A. Shukurov, and A. Brandenburg: Two-dimensional disk dynamos with vertical outflows into a halo. 2000/116.
A. Brandenburg: The solar dynamo: old, recent, and new problems. 2000/117.
A. Brandenburg: The inverse cascade in turbulent dynamos. 2000/118.
S. Hannestad, S.H. Hansen, and F.L. Villante: Probing the power spectrum bend with recent CMB data. 2000/119.
A. Bigazzi, A. Brandenburg, and K. Subramanian: Sheared helical turbulence and the helicity constraint in large-scale dynamos. 2000/120.
A. Brandenburg and R.M. Kerr: Helicity in Hydro and MHD reconnection. 2000/121.
P. Kolb, P. Huovinen, U. Heinz, and H. Heiselberg: Elliptic flow at SPS and RHIC: from kinetic transport to hydrodynamics. 2000/122.
M. Bertolini and A. Lerda: Stable non-PBS D-branes and their classical description. 2000/123.
P.-E. N. Braad and S. Hannestad: On the chaoticity of active-sterile neurino oscillations in the early universe. 2000/124.
A. Brandenburg and Wolfgang Dobler: Large scale dynamos with helicity
loss through
boundaries. 2000/126.