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arXiv · 1212.2944

Space group symmetries and low lying excitations of many-body systems at integer fillings

Rahul Roy
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Abstract

We show that many-body systems with conserved particle number which have the symmetries corresponding to a nonsymmorphic space group have low lying excitations for certain integer values of the particle number per unit cell. These results may be interpreted as a generalization of some band touching theorems to interacting systems.

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Rahul Roy. 2012-12-12. Space group symmetries and low lying excitations of many-body systems at integer fillings. https://arxiv.org/abs/1212.2944

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