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Well-Posedness of a Class of Radial Inhomogeneous Hartree Equations

Author

Listed:
  • Saleh Almuthaybiri

    (Department of Mathematics, College of Science and Arts in Uglat Asugour, Qassim University, Buraydah 51452, Saudi Arabia)

  • Radhia Ghanmi

    (LR03ES04 Partial Differential Equations and Applications, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092 Tunis, Tunisia)

  • Tarek Saanouni

    (Department of Mathematics, College of Science and Arts in Uglat Asugour, Qassim University, Buraydah 51452, Saudi Arabia)

Abstract

The present paper investigates the following inhomogeneous generalized Hartree equation i u ˙ + Δ u = ± | u | p − 2 | x | b ( I α ∗ | u | p | · | b ) u , where the wave function is u : = u ( t , x ) : R × R N → C , with N ≥ 2 . In addition, the exponent b > 0 gives an unbounded inhomogeneous term | x | b and I α ≈ | · | − ( N − α ) denotes the Riesz-potential for certain 0 < α < N . In this work, our aim is to establish the local existence of solutions in some radial Sobolev spaces, as well as the global existence for small data and the decay of energy sub-critical defocusing global solutions. Our results complement the recent work (Sharp threshold of global well-posedness versus finite time blow-up for a class of inhomogeneous Choquard equations, J. Math. Phys. 60 (2019), 081514). The main challenge in this work is to overcome the singularity of the unbounded inhomogeneous term | x | b for certain b > 0 .

Suggested Citation

  • Saleh Almuthaybiri & Radhia Ghanmi & Tarek Saanouni, 2023. "Well-Posedness of a Class of Radial Inhomogeneous Hartree Equations," Mathematics, MDPI, vol. 11(23), pages 1-25, November.
    • Handle: RePEc:gam:jmathe:v:11:y:2023:i:23:p:4713-:d:1284525
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