Static hole in a critical antiferromagnet: field-theoretic renormalization group

Details Static hole in a critical antiferromagnet: field-theoretic renormalization group Static hole in a critical antiferromagnet: field-theoretic renormalization group

2000-11-14

arxiv.org/abs/cond-mat/0011233v1

Physica C357 (2001) 78

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 2 figures; for field theory afficionados; all others see cond-mat/0011232; Proceedings of the 13th International Symp

Scientific paper

10.1016/S0921-4534(01)00198-8

We consider the quantum field theory of a single, immobile, spin S hole coupled to a two-dimensional antiferromagnet at a bulk quantum critical point between phases with and without magnetic long-range order. We present an alternative derivation of its two-loop beta function; the results agree completely with earlier work (M. Vojta et al, cond-mat/9912020), and also determine a new anomalous dimension of the hole creation operator.

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