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긴거리 상관된 시간 의존 무작위 퍼텐셜에서 긴거리 상호작용하는 보존들의 양자 임계 현상
- Alternative Title
- YeongKwon CHO
- Author(s)
- 조영권
- Alternative Author(s)
- YeongKwon CHO
- Advisor
- 김기홍
- Department
- 일반대학원 물리학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2006-02
- Language
- eng
- Alternative Abstract
- We study the superfluid-insulator transition of a system of long-range interacting bosons in a time-dependent random potential in two dimensions, using the momentum-shell renormalization group method to one-loop order. The Gaussian-correlated random potential is assumed to be short-range-correlated in spatial directions and long-range-correlated in the temporal dimension. We find a new stable fixed point with nonzero and physical values of the four parameters representing the short- and long-range interactions and the short- and long-range-correlated disorder, when the interaction is asymptotically logarithmic. We propose that our model may be relevant in studying the vortex liquid-vortex glass transition of interacting vortex lines in type-II superconductors with partially-disconnected columnar defects.
- Fulltext
- Appears in Collections:
- Graduate School of Ajou University > Department of Physics > 3. Theses(Master)
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