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Irreducibility of the Bloch variety for periodic Schrödinger operators in arbitrary dimension
Abstract
Let d≥1 and V∈ C(𝕋d;ℂ). We prove that the Bloch variety of −Δ+V is irreducible modulo periodicity. The proof combines holomorphic continuation of spectral band functions with integer translations of quasimomentum. Using analytic geometry and perturbation estimates along imaginary rays, we show that, after suitable integer translations, all irreducible components contain the same holomorphic spectral branch.
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BibTeX
@misc{liu2026irreducibility,
title = {{Irreducibility of the Bloch variety for periodic Schrödinger operators in arbitrary dimension}},
author = {Wencai Liu},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.16763},
eprint = {2609.16763},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.16763},
}
RIS
TY - UNPB
TI - Irreducibility of the Bloch variety for periodic Schrödinger operators in arbitrary dimension
AU - Wencai Liu
PY - 2026
DA - 2026/09/15
PB - arXiv
DO - 10.48550/arxiv.2609.16763
UR - https://arxiv.org/abs/2609.16763
AB - Let d≥1 and V∈ C(𝕋^d;ℂ). We prove that the Bloch variety of −Δ+V is irreducible modulo periodicity. The proof combines holomorphic continuation of spectral band functions with integer translations of quasimomentum. Using analytic geometry and perturbation estimates along imaginary rays, we show that, after suitable integer translations, all irreducible components contain the same holomorphic spectral branch.
ER -