Geometric phases and competing orders in two dimensions

Details Geometric phases and competing orders in two dimensions Geometric phases and competing orders in two dimensions

2010-10-18

arxiv.org/abs/1010.3745v1

Phys.Rev.B83:165123,2011

Physics

Condensed Matter

Strongly Correlated Electrons

36 pages, 5 figures

Scientific paper

10.1103/PhysRevB.83.165123

We discuss the problem of characterizing "quantum disordered" ground states, obtained upon loss of antiferromagnetic order on general lattices in two spatial dimensions, with arbitrary electronic band structure. A key result is the response in electron bilinears to the skyrmion density in the local antiferromagnetic order, induced by geometric phases. We also discuss the connection to topological terms obtained under situations where the electronic spectrum has a Dirac form.

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