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Polarization and en...
Polarization and entanglement spectrum in non-Hermitian systems
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- Ortega-Taberner, Carlos (author)
- Stockholms universitet,Fysikum,Nordiska institutet för teoretisk fysik (Nordita),Stockholm Univ, Dept Phys, AlbaNova Univ Ctr, SE-10691 Stockholm, Sweden.; NORDITA SU
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- Rødland, Lukas (author)
- Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, AlbaNova Univ Ctr, SE-10691 Stockholm, Sweden.
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- Hermanns, Maria (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Stockholm Univ, Dept Phys, AlbaNova Univ Ctr, SE-10691 Stockholm, Sweden.,Fysikum,Nordiska institutet för teoretisk fysik (Nordita)
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(creator_code:org_t)
- American Physical Society (APS), 2022
- 2022
- English.
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In: Physical Review B. - : American Physical Society (APS). - 2469-9950 .- 2469-9969. ; 105:7
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- The entanglement spectrum is a useful tool to study topological phases of matter, and contains valuable information about the ground state of the system. Here, we study its properties for free non-Hermitian systems for both point-gapped and line-gapped phases. While the entanglement spectrum only retains part of the topological information in the former case, it is very similar to Hermitian systems in the latter. In particular, it not only mimics the topological edge modes, but also contains all the information about the polarization, even in systems that are not topological. Furthermore, we show that the Wilson loop is equivalent to the many-body polarization and that it reproduces the phase diagram for the system with open boundaries, despite being computed for a periodic system.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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