svajcarska Scientific Co-operation between Eastern Europe and Switzerland
http://www.snf.ch/E/international/europe/scopes/Pages/default.aspx
Swiss National Science Foundation
2009-2012

The aim of this collaborative effort is to establish nano-crystalline porous anatase Titanium dioxide (TiO2) for environmental technologies, specifically to pollutant detection and solar energy capture technologies, through combined experimental-simulation-theory efforts.

TiO2 is an important photo catalyst due to its strong oxidizing power, non-toxicity and long-term photo stability. The interest in nano-crystalline anatase TiO2 has been driven by its potential for a variety of technological applications including photo catalysis, electrochemical solar cells, optoelectronic devices, chemical sensors, and dielectric material of thin-film capacitors. Together with cerium dioxide (CeO2), porous TiO2 is seen as a material for the production of molecular hydrogen from water using sun energy in a photo catalytic reaction process. In addition, nanocrystalline anatase TiO2 is a weak magnetic semiconductor with proven room temperature ferromagnetism. This opens the possibility for the use of TiO2 in second-generation spintronic devices. Its ferromagnetic properties can be enhanced with the addition of transition metals such as iron, cobalt, or vanadium. Approximately 4 million tons of TiO2 are consumed annually worldwide -- the principle use today being that of a bright white pigment.
nemacka Fast Converging Path Integral Approach to Bose-Einstein Condensation
Bilateral project with Germany
2009-2010

A Bose–Einstein condensate (BEC) is a state of matter of bosons confined in an external potential and cooled to temperatures very near to absolute zero. Under such conditions, a large fraction of the atoms collapse into the lowest quantum state of the external potential, at which point quantum effects become apparent on a macroscopic scale. This state of matter was first predicted by Satyendra Nath Bose and Albert Einstein in 1924-25. Seventy years later, the first gaseous condensate was produced by Eric Cornell and Carl Wieman in 1995 at the University of Colorado at Boulder NIST-JILA lab, using a gas of rubidium atoms cooled to 170 nK. Cornell, Wieman, and Wolfgang Ketterle at MIT were awarded the 2001 Nobel Prize in Physics for their achievements.

SCL's two-year bilateral research project "Fast Converging Path Integral Approach to Bose-Einstein Condensation" is funded through the joint program by the Serbian Ministry of Science and German DAAD agency for the period 2009-2010. This project provides support to the ongoing collaboration established between SCL's path integral group, led by Dr. Aleksandar Bogojevic, and a research group of Dr. Axel Pelster from the University of Duisburg-Essen, Germany. One of the central aspects of the proposed project is the participation of young scientists in the planned research. A total of four PhD students (two from each partner) will participate in short-term visits and all research activities. The key aspect of their visits is to receive training relevant for their work on the joint research programme and to acquire relevant expertise.

The planned research aims to develop a new method for efficiently calculating path integrals by combining previously developed approaches of the two partners: higher order effective actions approach (Serbian group), and recursive diagrammatical approach (German group). The integrated method will be then applied to the study of Bose-Einstein condensation phenomenon. This research will analyze in detail the relation of the new method to other established approaches, such as Variational Perturbation Theory. We also plan to extend our existing Monte Carlo codes so as to implement the above approaches to the study of Bose-Einstein condensation in non-inertial and electromagnetic traps, and in related experimental setups.

Papers:

Activities and news related to the project:
lacern LA@CERN: Learning with ATLAS@CERN
http://www.ea.gr/ep/lacern
European Commission, Lifelong Learning Programme
2008-2010

Originally developed at CERN as a tool to help scientists share information, the world wide web continues to be an important mode of communication for scientific inquiry. Rich science databases in a variety of fields are publicly available, and can provide a catalyst for learning. Schools, universities and science centers can act as mediators, organizing information – tailored to the needs of their communities – across scientific disciplines and providing tools for understanding complex scientific research, making science understandable and interesting to the public.

The LA@CERN (Learning with ATLAS@CERN) project brings together expertise from frontier scientific research, educational research in formal and informal science learning, and user communities across Europe. The LA@CERN consortium designs, develops, tests, implements and disseminates an innovative pedagogical framework that supports effective "dialogue" between scientific research and communities, at the moment when the new gigantic detector ATLAS is starting operation at CERN, to explore the fundamental building blocks and forces of nature, and to probe deeper into matter than ever before.

The project represents a reversal of science teaching pedagogy from mainly deductive to inquiry-based approach that provides the means to increase interest in science. The approach emphasizes curiosity and observations followed by problem solving and experimentation in both real and virtual settings. These pedagogical concepts and learning practices are addressed by implementing a set of missions (learning scenarios) tailored to the needs of the diverse groups of learners, employing advanced and interactive visualization technologies and also personalized ubiquitous learning paradigms in order to enhance the effectiveness and quality of the learning process. In the framework of these missions, users interact with a series of educational analysis tools that allow them to manipulate data and make their own discoveries. The developed web based educational environment facilitate the proposed process by providing access to near real-time data and interactive analysis tools, 3D and 2D animations of physical processes in a game-like approach, teacher-resources, student-centered materials, applications for educational projects and collaborative activities.

The Scientific Computing Laboratory of the Institute of Physics Belgrade (University of Athens subcontractor) is the principal developer of HYPATIA and HYPATIA Simplified Version applications and maintains the official HYPATIA web page. All applications and codes developed within LA@CERN are available as open source software. SCL provides and maintains the project’s source code repository.

francuska Topological phases in strongly correlated Fermi systems
Bilateral project with France
2008-2009


Topological phases are phases of condensed matter that are gapped (require finite energy to be excited from a ground state) and are characterized by numbers or topological invariants related to quantum numbers of their quasiparticle excitations. By the experimental discovery of the fractional quantum Hall effect they came into existence as new phases of matter that support excitations; quasiparticles that accumulate these nontrivial, fixed numbers under the operation of quasiparticle exchange. Due to their topological nature; robustness to any local perturbation the applicability of topological phases is foreseen in the modern field of quantum computing for the storage and manipulation of information by using the braiding rules (the rules of exchange) of quasiparticles of definite, special topological phases
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Our project is a search for stable topological phases, candidates for the computing devices, in the context of multi-component quantum Hall systems and rapidly rotating Fermi gases. Our approach will be mainly numerical based on the long tradition and experience that tell us that detection of topological phases can be trusted on the basis of finite (small) system numerical calculations, but will also use the deep insights that stem from the connection of the topological phases in 2+1 dimension and the quantum field theories in 1+1 dimension.
nato Electronic Structure Calculations of Complex Materials
NATO Science for Peace and Security Programme, Public Diplomacy Division Reintegration Grant
2008-2010


The Science for Peace and Security Programme offers grants to scientists in NATO, Partner and Mediterranean Dialogue countries to collaborate on priority research areas. The aim of the NATO Reintegration Grant is to support the reintegration of young Partner country scientists in their home countries after conducting research in NATO countries. Reintegration Grants are intended to give the returning fellow the means necessary to start a scientific career in his home country and to establish a research team in the research institution of his choice.

A Reintegration Grant, awarded to Dr. Darko Tanaskovic, is intended to support research activity on “Electronic Structure Calculations of Complex Materials”. Thermodynamic and transport properties of novel strongly correlated materials, like high-temperature superconductors, heavy fermions, transition metal oxides, and actinides, will be calculated using dynamical mean-field theory and its very recent extension “LDA+DMFT”. The proposed research is a direct continuation of the successful collaboration with Prof. Vladimir Dobrosavljevic from National High Magnetic Field Laboratory in Tallahassee, Florida, USA. It draws upon the expertise gained during the applicants doctoral studies at Florida State University. The high performance computing resources at the Institute of Physics in Belgrade will greatly facilitate the fulfillment of the proposed program.