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Symmetry, Volume 3, Issue 4

December 2011 - 5 articles

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Articles (5)

  • Article
  • Open Access
5,194 Views
48 Pages

12 December 2011

In this paper we review recent results on the preliminary applications of the new-found extended global SO(3) × SO(3) × U(1) symmetry of the Hubbard model on a bipartite lattice. Our results refer to the particular case of the bipartite square lattic...

  • Article
  • Open Access
6 Citations
6,383 Views
24 Pages

Polyominoes and Polyiamonds as Fundamental Domains of Isohedral Tilings with Rotational Symmetry

  • Hiroshi Fukuda,
  • Chiaki Kanomata,
  • Nobuaki Mutoh,
  • Gisaku Nakamura and
  • Doris Schattschneider

12 December 2011

We describe computer algorithms that produce the complete set of isohedral tilings by n-omino or n-iamond tiles in which the tiles are fundamental domains and the tilings have 3-, 4-, or 6-fold rotational symmetry. The symmetry groups of such tilings...

  • Article
  • Open Access
9 Citations
4,981 Views
17 Pages

18 November 2011

The language of gene expression displays topological symmetry. An important step during gene expression is the binding of transcriptional proteins to DNA promoters adjacent to a gene. Some proteins bind to many promoters in a genome, defining a regul...

  • Article
  • Open Access
24 Citations
10,288 Views
51 Pages

d-Wave Superconductivity and s-Wave Charge Density Waves: Coexistence between Order Parameters of Different Origin and Symmetry

  • Toshikazu Ekino,
  • Alexander M. Gabovich,
  • Mai Suan Li,
  • Marek Pękała,
  • Henryk Szymczak and
  • Alexander I. Voitenko

20 October 2011

A review of the theory describing the coexistence between d-wave superconductivity and s-wave charge-density-waves (CDWs) is presented. The CDW gapping is identified with pseudogapping observed in high-Tc oxides. According to the cuprate specificity,...

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Symmetry - ISSN 2073-8994