QUASI-EXACT SOLVABILITY OF TRI-CONFLUENT HEUN EQUATION
DOI:
https://doi.org/10.33003/fjs-2026-1003-4828Keywords:
Algebraization, Tri-confluent Heun Equations, Gauge potential, Exactly solvable potentialAbstract
The Tri-confluent Heun Equations (TCHE) are second order differential equations in the complex domain obtained by a limiting process which merges regular singularities of the canonical Heun differential equation with a regular singularity at and the irregular singularity at of rank 3. In this paper, we present a new algebraisation of the TCHE by writing it as the linear combination of quadratic elements in the universal enveloping algebra of We also obtain a new exactly solvable potential from TCHE using a suitable guage transformation.
References
Abramowitz, M. and Stegun, I. A. (eds.) (1965). Handbook of Mathematical Functions with
Formulas, Graphs, and Mathematical Tables, New York: Dover, ISBN 978-0486612720,
MR0167642 .
Agarwal R.P. and C.F. Elena (2017). An Introduction to Linear Algebra, Chapman and Hall
CRC.
Aldossari S. (2024). Solving Second-Order Homogeneous Linear Differential Equations in
Terms of the Tri-confluent Heun’s function. Symmetry 2024, 16, 678.
https://doi.org/10.3390/sym16060678.
Bühring W. (1994). The Bi- confluent Heun Equation: Characteristic Exponent and Connection
Formulae. Methods and Applications of Analysis, 1(3), pp. 348-370.
Faleye B.J., Oyewumi K.J., Ikhdair D.M. & Simsek M. (2014). Solving a two-electron quantum
dot model in terms of polynomial solutions of Biconfluent Heun Equation, Annals of
Physics, 347, 130-139.
Gonzalo-Lopez A., Kamram M. N. and Olver P.J. (1994) Quasi-Exact Solvability. Contemp.
Math. Vol. 160, pp. 113-140.
Karayer H., Demirhan D. and Buyükkiliç F. (2015). Some Special Solutions of Biconfluent and
Triconfluent Heun Equations in Elementary Functions by Extended Nikiforov–Uvarov
Method, Reports on Mathematical Physics Vol. 76, No.3, pp. 271-281.
Krall H.L. (1938). Certain Differential Equations for Chebyshev Polynomials. Duke Math. J.
(4), pp. 705-718.
Panahi H., Zarrinkamar S., and Baradaran M. (2015). Solutions of the D-dimensional
Schröodinger equation with Killingbeck potential: Lie algebraic approach. Chin. Phys. B
Vol. 24, No. 6, 060301.
Osherov V. I. and Ushakov V. G. The Stokes multipliers and quantization of the quartic
oscillator. J. Phys. A: Math. Theor. 44 (2011) 365202 (12pages).
Ronveaux A., Arscott F.M. (1995). Heun Differential Equations. Oxford University Press
Oxford, U.K.
Schulze-Halberg A. (2002) Quasi-Exactly Solvable Singular Fractional Power Potentials
Emerging from the Triconfluent Heun Equation, Physica Scripta. Vol. 65, pp. 373-376.
Slavyanov S.Y., Lay W., Seeger A.(2000). Special functions: a unified theory based on
Singularities. Oxford University Press Oxford, U.K
Turbiner A.V.( 2016). One-Dimensional Quasi-Exactly Solvable Schrödinger Equations.
arXiv:1603.02992v2 [quant-ph] 8 Apr 2016.
Vieira H. S. and Bezerra V. B. (2016). Solution of the Wheeler-DeWitt equation and the
Triconfluent Heun functions. Physical Review D 94, pp.023511-1 - 023511-10.
Wang Z.X. and Guo D.R. (1989). Special Functions. World Scientific Publishing Company Pte
Ltd. Singapore.
Whittaker E.T.and Watson G.N. (1902). A Course of Modern Analysis. CUP New York.
Wolf G. (1998). On the central connection problem for the bi-confluent Heun equation.
Mathematische Nachrichten, Wiley Online Library.
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Copyright (c) 2026 Ubong Sam Idiong, Ezekiel Abiodun Oluwafemi

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