A regularized trace formula for ”weighted” Sturm-Liouville equation with point δ - interaction

A regularized trace formula for ”weighted” Sturm-Liouville equation with point δ - interaction

In this study, we obtain a formula for the regularized trace formula for ”weighted” Sturm–Liouville equation with point δ - interaction. At the begining, for the correct determination of solutions of analyzed equation at the point of discontinuty, the matching conditions are required. As a result, an equation is derived for the eigenvalues of the differential operator given in this study.

___

  • [1] Albeverio S, Gesztesy F, Hoegh-Krohn R, Holden H. (with an appendix by Exner P.) Solvable Models in Quantum Mechanics (second edition). American Mathematical Society Chelsea Publishing 2005.
  • [2] Bellman R, Cooke K. Differential-Difference Equations. Academic Press 1963.
  • [3] Coddington EA, Levinson N. Theory of Ordinary Differential Equations. McGraw-Hill 1955.
  • [4] Dikii LA. Trace formulas for Sturm-Liouville differential equations. Uspekhi Matematicheskikh Nauk 1958; 13 (3): 111-143 (in Russian).
  • [5] Gasymov MG. On the sum of differences of eigenvalues of two self-adjoint operators. Soviet Mathematics Doklady 1963; 150: 1202-1205 (in Russian).
  • [6] Gelfand IM, Levitan BM. On a formula for eigenvalues of a differential operator of second order. Soviet Mathematics Doklady 1953; 88: 593-596 (in Russian).
  • [7] Gesztesy F, Holden H, Simon B, Zhao Z. A trace formula for multidimensional Schrödinger operators. Journal of Functional Analysis 1996; 141: 449-465.
  • [8] Guseinov GS, Levitan BM. On trace formulas for Sturm-Liouville operators. Vestnik Moskovskogo Universiteta Seriya 1 Matematika Mekhanika 1978; 1: 40-49 (in Russian).
  • [9] Lax PD. Trace formulas for the Schrödinger operator. Communications on Pure and Applied Mathematics 1994; 47: 503-512.
  • [10] Levin BY. Lectures on entire functions. Providence, RI: American Mathematical Society 1996.
  • [11] Levitan BM. Calculation of the regularized trace for the Sturm-Liouville operator. Uspekhi Matematicheskikh Nauk 1964; 19 (1): 161-165 (in Russian).
  • [12] Manafov MD. On the spectrum of a class of non-self-adjoint ”weighted” operator with point δ -interactions. Proceedings of the Institute of Mathematics and Mechanics Azerbaijan National Academy of Sciences 2014; 40: 283-289.
  • [13] Sadovnichii VA, Podolskii VE. Traces of operators. Uspekhi Matematicheskikh Nauk 2006; 61 (5): 89-156; English translation: Russian Mathematical Surveys 2006; 61 (5): 885-953.
  • [14] Savchuk AM. First order regularized trace of the Sturm-Liouville operator with δ -potential. Uspekhi Matematicheskikh Nauk 2000; 55 (6): 155-156; English translation: Russian Mathematical Surveys 2000; 55 (6): 1168-1169.
  • [15] Savchuk AM, Shkalikov AA. The trace formula for Sturm-Liouville operator with singular potentials. Matematicheskie Zametki 2001; 69 (3): 427-442; English translation: Mathematical Notes 2001; 69 (3): 387-400.
  • [16] Vinokurov VA, Sadovnichii VA. The asymptotics of eigenvalues and eigenfunctions and a trace formula for a potential with delta functions. Differentsial’nye Uravneniya 2002; 38 (6): 735-751; English translation: Differential Equations 2002; 38 (6): 772-789.