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.
URI
https://dspace.ajou.ac.kr/handle/2018.oak/7407
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Graduate School of Ajou University > Department of Physics > 3. Theses(Master)
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