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Quantum Critical Phenomena with Broken Particle-Hole Symmetry

Title
Quantum Critical Phenomena with Broken Particle-Hole Symmetry
Author
차민철
Keywords
INSULATOR TRANSITION; SUPERFLUID
Issue Date
2008-04
Publisher
AMERICAN PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v. 77, No. 16, Article no. 165124
Abstract
We investigate the functional form of the order-parameter (two-point) correlation function in quantum critical phenomena. When broken particle-hole symmetry brings the dynamical critical exponent z=2, we find that the equal-time correlation function at criticality does not display a diverging correlation length. We illustrate our conclusions by Monte Carlo calculations of the quantum rotor model in d=2 space dimensions.
URI
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.77.165124http://repository.hanyang.ac.kr/handle/20.500.11754/80274
ISSN
2469-9950; 2469-9969
DOI
10.1103/PhysRevB.77.165124
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > PHOTONICS AND NANOELECTRONICS(나노광전자학과) > Articles
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