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Trace formulas for Schrödinger operators on periodic graphs. / Korotyaev, Evgeny; Сабурова, Наталья.
в: Journal of Mathematical Analysis and Applications, Том 508, № 2, 125888, 15.04.2022.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Trace formulas for Schrödinger operators on periodic graphs
AU - Korotyaev, Evgeny
AU - Сабурова, Наталья
N1 - Publisher Copyright: © 2021 Elsevier Inc.
PY - 2022/4/15
Y1 - 2022/4/15
N2 - We consider Schrödinger operators with periodic potentials on periodic discrete graphs. Their spectrum consists of a finite number of bands. We determine trace formulas for the Schrödinger operators. The proof is based on the decomposition of the Schrödinger operators into a direct integral and a specific representation of fiber operators. The traces of the fiber operators are expressed as finite Fourier series of the quasimomentum. The coefficients of the Fourier series are given in terms of the potentials and cycles in the quotient graph from some specific cycle sets. We also present the trace formulas for the heat kernel and the resolvent of the Schrödinger operators and the determinant formulas.
AB - We consider Schrödinger operators with periodic potentials on periodic discrete graphs. Their spectrum consists of a finite number of bands. We determine trace formulas for the Schrödinger operators. The proof is based on the decomposition of the Schrödinger operators into a direct integral and a specific representation of fiber operators. The traces of the fiber operators are expressed as finite Fourier series of the quasimomentum. The coefficients of the Fourier series are given in terms of the potentials and cycles in the quotient graph from some specific cycle sets. We also present the trace formulas for the heat kernel and the resolvent of the Schrödinger operators and the determinant formulas.
KW - Discrete Schrödinger operators
KW - Periodic graphs
KW - Trace formulas
UR - http://www.scopus.com/inward/record.url?scp=85120771567&partnerID=8YFLogxK
U2 - 10.1016/j.jmaa.2021.125888
DO - 10.1016/j.jmaa.2021.125888
M3 - Article
AN - SCOPUS:85120771567
VL - 508
JO - Journal of Mathematical Analysis and Applications
JF - Journal of Mathematical Analysis and Applications
SN - 0022-247X
IS - 2
M1 - 125888
ER -
ID: 91318467