Gaussian free fields at the integer quantum Hall plateau transition
Gaussian free fields at the integer quantum Hall plateau transition
复制标题
整数量子霍尔平台跃迁处的高斯自由场
DOI:
10.1016/j.nuclphysb.2017.02.011
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发表时间:
2017
影响因子:
2.8
通讯作者:
Bondesan R
中科院分区:
文献类型:
--
作者:
Bondesan R
In this work we put forward an effective Gaussian free field description of critical wavefunctions at the transition between plateaus of the integer quantum Hall effect. To this end, we expound our earlier proposal that powers of critical wave intensities prepared via point contacts behave as pure scaling fields obeying an Abelian operator product expansion. Our arguments employ the framework of conformal field theory and, in particular, lead to a multifractality spectrum which is parabolic. We also derive a number of old and new identities that hold exactly at the lattice level and hinge on the correspondence between the Chalker–Coddington network model and a supersymmetric vertex model.
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DOI:
--
发表时间:
2005
期刊:
影响因子:
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作者:
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