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Bridging Fermionic and Bosonic Short Range Entangled States

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arxiv 1404.6256 v4 pith:43HUR6OR submitted 2014-04-24 cond-mat.str-el

Bridging Fermionic and Bosonic Short Range Entangled States

classification cond-mat.str-el
keywords statesbosonicfieldfermionicconstructdemonstrateentangledgauge
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In this paper we construct bosonic short range entangled (SRE) states in all spatial dimensions by coupling a $Z_2$ gauge field to fermionic SRE states with the same symmetries, and driving the $Z_2$ gauge field to its confined phase. We demonstrate that this approach allows us to construct many examples of bosonic SRE states, and we demonstrate that the previous descriptions of bosonic SRE states such as the semiclassical nonlinear sigma model field theory and the Chern-Simons field theory can all be derived using the fermionic SRE states.

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