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กแ Research Areas

* Elementary Particle Physics Theory and Experiment
"What is matter made of?" has been a fundamental question asked since the earliest days of science. Elementary particle physics seeks for the answer directly from very deep inside matter itself. Elementary particles, i.e., the basic building blocks of nature, and their interactions are the subject of this field. Representative research fields in the theoretical area are the phenomenological theory of particles, quantum field theory, unified field theory, string theory, and cosmology. Experimentalists are working in huge particle accelerators at KEK, Fermilab, and CERN as well as in an undeground laboratory(Kamiokande) in collaboration with international research teams. A domestic experimental program searching for dark matter in 700m deep undeground laboratory in Yangyang is on going.

* Nuclear Physics Theory and Experiment
The structure and interaction of hadrons in and out of baryon-rich medium-nuclei and nuclear matter-is studied theoretically and experimentally. Because of severe nonperturbative effects, strong interactions at low energy remain, lattice calculations notwithstanding, intractable in terms of QCD, relying on the effective theory based on the phenomenology. Such research overlaps closely over some activities of nuclear astrophysics. The studies are conducted in close international collaboration, especially with J-Lab in USA and with RIKEN and KEK in Japan.

* Condensed Matter Physics Theory and Statistical and Computational Physics
The electronic structure and transport properties of solids, nanostructures such as carbon nanotubes, and macromolecules are important subjects of condensed matter physics. Energy bands and electrical, magnetic, optic, and mechanical properties are calculated and compared with experiment to enhance our understanding of materials. The statistical and computational physics groups are conducting research in nonlinear dynamics, phase transitions, and critical phenomena by developing exactly soluble models and computer simulation methods. Complex systems are intensively studied as well.

* Condensed Matter Physics Experiments
Condensed matter, i.e., solids and liquids, is the most prevailing form of matter around us. Experimentalists are studying various aspects of certain specific types of condensed matter using a variety of experimental techniques. The research in this area can be divided into a number of sub-fields: compound semiconductors and quantum wells, high-temperature superconductors and Josephson junctions, surfaces and interfaces, synthetic metals and carbon nano-tubes, transition and rare-earth metal oxides, magnetism and low-temperature properties.

* Atomic and Molecular Experiments
Fundamental atom-field interaction is the building block of all optical phenomena ranging from single atom in a cavity to nonlinear optical interactions in condensed matter. Of particular interest are the nonclassical photon statistics in the cavity-quantum-electrodynamics, single atom trapping and its applications to quantum information, and quantum chaos phenomena in deformed microcavities. In addition, principles and techniques are investigated for submicron-resolution three-dimensional imaging of semi-transparent samples based on nonlinear optics, along with wave and ray optics applications to imaging systems. Nowadays, modern experimental techniques can trap atoms very quietly, which means at a very low temperature (~100 nK). In this way, the Bose-Einstein conjecture of the condensed macroscopic quantum state can be revealed and studied unambiguously.

* Plasma, Bio, and Medical Physics
In plasma experiments, the physical phenomena of a non-neutral plasma, namely an electron beam, is studied in the context of high energy accelerators and coherent radiation sources. Both theoretical and experimental works on advanced vacuum devices such as MEMS-based devices and giga-watt nanosecond electron devices are studied. Biophysics group is newly established. In the biophysics laboratory, biological phenomena are studied in a single-molecule basis. The group has a unique experimental technique to see important molecular behaviors. There is a group who seek for relationships between physics and oriental medical methods. Biomedical physics of oriental medicine deals with physics related to the oriental description of the body, especially the system of acupuncture meridians and physical aspects of the various oriental therapies.