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Generic superfluid-insulator transition in the spherical limit in two dimensions

Title
Generic superfluid-insulator transition in the spherical limit in two dimensions
Author
차민철
Issue Date
2005-12
Publisher
한국물리학회
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v. 47, No. 6, Page. 1087-1092
Abstract
The generic superfluid-insulator transition of the quantum rotor model in two dimensions is studied in the spherical limit. The finite-size scaling behaviors of various quantities, such as the correlation length, the superfluid stiffness, the compressibility, and the density, in very large systems, without suffering from statistical errors, are investigated as functions of the tuning parameter and the aspect ratio, which clearly shows that the aspect ratio is also a scaling variable. We find that the transition is characterized by the dynamical critical exponent z = 2.0 and the correlation length critical exponent v = 0.5, which is consistent with the theoretical prediction, indicating the mean-field nature of the transition.
URI
http://www.jkps.or.kr/journal/view.html?uid=7257&vmd=Fullhttp://repository.hanyang.ac.kr/handle/20.500.11754/112070
ISSN
0374-4884; 1976-8524
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > PHOTONICS AND NANOELECTRONICS(나노광전자학과) > Articles
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