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Non-local order parameters for states with topological electromagnetic response
Thomas Klein Kvorning, Christian Spånslätt, AtMa P. O. Chan +1
Chern insulators are states of matter characterized by a quantized Hall conductance, gapless edge modes but also a singular response to monopole configurations of an external elect…
Non-local Order Parameters and Quantum Entanglement for Fermionic Topological Field Theories
Kansei Inamura, Ryohei Kobayashi, Shinsei Ryu
We study quantized non-local order parameters, constructed by using partial time-reversal and partial reflection, for fermionic topological phases of matter in one spatial dimensio…
Collective excitations at filling factor 5/2: The view from superspace
Andrey Gromov, Emil J. Martinec, Shinsei Ryu
We present a microscopic theory of the neutral collective modes supported by the non-Abelian fractional quantum Hall states at filling factor 5/2. The theory is formulated in terms…
Effective response theory for Floquet topological systems
Paolo Glorioso, Andrey Gromov, Shinsei Ryu
We present an effective field theory approach to the topological response of Floquet systems with symmetry group . This is achieved by introducing a background gauge field i…
Entanglement spectrum and entropy in topological non-Hermitian systems and non-unitary conformal field theories
Po-Yao Chang, Jhih-Shih You, Xueda Wen +1
We propose a method of computing and studying entanglement quantities in non-Hermitian systems by use of a biorthogonal basis. We find that the entanglement spectrum characterizes…