Abstract
We consider singular real second order 1D Schrödinger operators such that all local solutions to the eigenvalue problems are x-meromorphic for all λ. All algebrogeometrical potentials (i.e. “singular finite-gap” and “singular solitons”) satisfy to this condition. A Spectral Theory is constructed for the periodic and rapidly decreasing potentials in the classes of functionswith singularities: The corresponding operators are symmetric with respect to some natural indefinite inner product as it was discovered by the present authors. It has a finite number of negative squares in the both (periodic and rapidly decreasing) cases. The time dynamics provided by the KdV hierarchy preserves this number. The right analog of Fourier Transform on Riemann Surfaces with good multiplicative properties (the R-Fourier Transform) is a partial case of this theory. The potential has a pole in this case at x = 0 with asymptotics u ∼ g(g + 1)/x 2. Here g is the genus of spectral curve.
Similar content being viewed by others
References
P.G. Grinevich and S.P. Novikov. Singular finite-gap operators and indefinite metrics. Russian Mathematical Survey, 64(4) (2009), 625–650.
P.G. Grinevich and S.P. Novikov. Singular Solitons and Indefinite Metrics. Doklady Mathematics, 83(3) (2011), 56–58.
B.A. Dubrovin, V.B. Matveev and S.P. Novikov. Nonlinear equations of the Korteweg-de-Vries type, finite-zone linear operators and Abelian Varieties. Russiam Mathematical Surveys, 31(1) (1976), 55–136.
I.M. Krichever. Spectral theory of finite-zone nonstationary Schrödinger operators. A nonstationary Peierls model. Functional Analysis and Its Applications, 20(3) (1986), 203–214.
I.M. Krichever. Spectral theory of two-dimensional periodic operators and its applications. Russian Mathematical Surveys, 44:2(266) (1989), 121–184.
I.M. Krichever and S.P. Novikov. Riemann Surfaces, Operator Fields, Strings. Analogues of the Laurent-Fourier Bases. Memorial Volume for Vadim Kniznik, “Physics and Mathematics of Strings”, eds. L. Brink, E. Friedan, A.M. Polyakov, World Scientific Singapore, (1990), 356–388.
V.A. Arkad’ev, A.K. Pogrebkov and M.K. Polivanov. Singular solutions of the KdV equation and the inverse scattering method. Journal of Soviet Mathematics, 31(6) (1985), 3264–3279.
P.A. Clarkson and E.L. Mansfield. The second Painlevé equation, its hierarchy and associated special polynomials. Nonlinearity, 16 (2003), R1–R26.
A.A. Shkalikov and O.A. Veliev. On the Riesz basis property of the eigenand associated functions of periodic and antiperiodic Sturm-Liouville problems. Mathematical Notes, 85(5–6) (2009), 647–660.
F. Gesztesy and V. Tkachenko. A criterion for Hill operators to be spectral operators of scalar type. J. d’Analyse Math., 107 (2009), 287–353.
P. Djakov and B. Mityagin. Convergence of spectral decompositions of Hill operators with trigonometric polynomial potentials. Math. Ann., 351(3) (2011), 509–540.
P. Djakov and D. Mityagin. Criteria for existence of Riesz bases consisting of root functions of Hill and 1D Dirac operators. J. Funct. Anal., 263(8) (2012), 2300–2332.
F. Gesztezy and R. Weikard. Picard potentials and Hill’s equation on a torus. Acta Math., 176 (1996), 73–107.
B. Deconinck and H. Segur. Pole Dynamics for Elliptic Solutions of the Kortewegde Vries Equation. Mathematical Physics, Analysis and Geometry, 3(1) (2000), 49–74.
Author information
Authors and Affiliations
Corresponding author
About this article
Cite this article
Grinevich, P.G., Novikov, S.P. Singular soliton operators and indefinite metrics. Bull Braz Math Soc, New Series 44, 809–840 (2013). https://doi.org/10.1007/s00574-013-0035-5
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00574-013-0035-5
Keywords
- singular Schrodinger operator
- singular finite-gap potentials
- indefinite inner product
- Pontryagin-Sobolev spaces