I am a Research Fellow at University College London.

My works are in the pure and applied analysis of PDE. I specialise in microlocal and semiclassical analysis. I am interested in problems from spectral and scattering theory, mathematical physics, control theory and dynamical systems.

Here is my curriculum vitae. I was a student of Jared Wunsch. I am mentored by Jeffrey Galkowski.

I am not teaching in 2023–2024. Editorial requests for referee reports are welcomed.

My email address is ruoyu.protect..wang@.protect.ucl.ac.protect..uk. My office is Room 600, 25 Gordon St..


I regularly visit Imperial College for Applied PDE Seminar on Thursdays.


[6] Optimal backward uniqueness and polynomial stability of second order equations with unbounded damping (with Perry Kleinhenz). Preprint (2023).
[First half of the manuscript. Updates with new tools expected by 2024/02.]

[5] Control estimates for 0th order pseudodifferential operators (with Hans Christianson and Jian Wang). Int. Math. Res. Not. IMRN, published online (2023).
[Morse–Smale, limiting absorption principle, radial point estimates]

[4] Sharp polynomial decay for polynomially singular damping on the torus (with Perry Kleinhenz). Under review (2022).
[normally \(L^p\), semiclassical Morawetz vector field, backward uniqueness]

[3] Stabilisation of waves on product manifolds by boundary strips. Proc. Amer. Math. Soc., to appear (2022).
[transverse-to-product resolvent, transverse propagation estimate]

[2] Sharp polynomial decay for waves damped from the boundary in cylindrical waveguides. Math. Res. Lett., to appear (2022).
[Morawetz vector field, quasimodes via special functions]

[1] Exponential decay for damped Klein-Gordon equations on asymptotically cylindrical and conic manifolds. Ann. Inst. Fourier (Grenoble), to appear (2022).
[multiple-weight Carleman estimates, unique continuation and geometric control on noncompact manifolds]


I am not teaching in 2023–2024.

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