Entropic analysis of quantum phase transitions from uniform to spatially inhomogeneous phases
arXiv:cond-mat/0610499 · doi:10.1103/PhysRevLett.99.087203
Abstract
We propose a new approach to study quantum phase transitions in low-dimensional fermionic or spin models that go from uniform to spatially inhomogeneous phases such as dimerized, trimerized, or incommensurate phases. It is based on studying the length dependence of the von Neumann entropy and its corresponding Fourier spectrum for finite segments in the ground state of finite chains. Peaks at a nonzero wave vector are indicators of oscillatory behavior in decaying correlation functions.
4 pages, 7 figures
References in corpus (5)
Cited by in corpus (12)
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