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The Frisch–Parisi formalism for fluctuations of the Schrödinger equation 

Kumar, S.; Ponce Vanegas, F.Autoridad BCAM; Roncal, L.Autoridad BCAM; Vega, L.Autoridad BCAM (2022)
We consider the solution of the Schrödinger equation $u$ in $\mathbb{R}$ when the initial datum tends to the Dirac comb. Let $h_{\text{p}, \delta}(t)$ be the fluctuations in time of $\int\lvert x \rvert^{2\delta}\lvert ...
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Counterexamples for the fractal Schrödinger convergence problem with an Intermediate Space Trick 

Eceizabarrena, D.; Ponce Vanegas, F.Autoridad BCAM (2021-12-09)
We construct counterexamples for the fractal Schrödinger convergence problem by combining a fractal extension of Bourgain's counterexample and the intermediate space trick of Du--Kim--Wang--Zhang. We confirm that the same ...
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Pointwise Convergence over Fractals for Dispersive Equations with Homogeneous Symbol 

Eceizabarrena, D.; Ponce Vanegas, F.Autoridad BCAM (2021-08-24)
We study the problem of pointwise convergence for equations of the type $i\hbar\partial_tu + P(D)u = 0$, where the symbol $P$ is real, homogeneous and non-singular. We prove that for initial data $f\in H^s(\mathbb{R}^n)$ ...
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Convergence over fractals for the Schrödinger equation 

Lucà, R.Autoridad BCAM; Ponce Vanegas, F.Autoridad BCAM (2021-01)
We consider a fractal refinement of the Carleson problem for the Schrödinger equation, that is to identify the minimal regularity needed by the solutions to converge pointwise to their initial data almost everywhere with ...
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A Bilinear Strategy for Calderón’s Problem 

Ponce Vanegas, F.Autoridad BCAM (2020-05)
Electrical Impedance Imaging would suffer a serious obstruction if two different conductivities yielded the same measurements of potential and current at the boundary. The Calderón’s problem is to decide whether the ...
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A Bilinear Strategy for Calderón's Problem 

Ponce Vanegas, F.Autoridad BCAM (2019-08)
Electrical Impedance Imaging would suffer a serious obstruction if for two different conductivities the potential and current measured at the boundary were the same. The Calder\'on's problem is to decide whether the ...
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Reconstruction of the Derivative of the Conductivity at the Boundary 

Ponce Vanegas, F.Autoridad BCAM (2019-08)
We describe a method to reconstruct the conductivity and its normal derivative at the boundary from the knowledge of the potential and current measured at the boundary. This boundary determination implies the uniqueness ...

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Ponce Vanegas, F. (7)
Eceizabarrena, D. (2)Kumar, S. (1)Lucà, R. (1)Roncal, L. (1)Vega, L. (1)SubjectBourgain's counterexample (2)Hausdorff dimension (2)Schrödinger equation (2)Calderón's Problem, Boundary Determination, Boundary Lebesgue Points (1)Calderón's Problem, Tao's Bilinear Theorem, Complex Geometrical Optics Solutions (1)Calderón’s Problem (1)Carleson's problem (1)dispersive PDEs (1)fractal (1)Frisch--Parisi formalism (1)... másFecha2022 (1)2021 (3)2020 (1)2019 (2)

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