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A strategy for self-adjointness of Dirac operators: Applications to the MIT bag model and delta-shell interactions 

Ourmières-Bonafos, T.; Vega, L.Autoridad BCAM (2016-12-21)
We develop an approach to prove self-adjointness of Dirac operators with boundary or transmission conditions at a $C^2$-compact surface without boundary. To do so we are lead to study the layer potential induced by the ...
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Reconstruction from boundary measurements for less regular conductivities 

García, A.; Zhang, G. (2016-10-01)
In this paper, following Nachman's idea [14] and Haberman and Tataru's idea [9], we reconstruct $C^1$ conductivity $\gamma$ or Lipchitz conductivity $\gamma$ with small enough value of $|\nabla log\gamma|$ in a Lipschitz ...
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Uniqueness and Properties of Distributional Solutions of Nonlocal Equations of Porous Medium Type 

Del Teso, F.; Endal, J.; Jacobsen, E.R. (2016-09-01)
We study the uniqueness, existence, and properties of bounded distributional solutions of the initial value problem for the anomalous diffusion equation $\partial_tu-\mathcal{L}^\mu [\varphi (u)]=0$. Here $\mathcal{L}^\mu$ ...
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Hardy uncertainty principle, convexity and parabolic evolutions 

Escauriaza, L.; Kenig, C.E.; Ponce, G.; Vega, L.Autoridad BCAM (2016-09-01)
We give a new proof of the $L^2$ version of Hardy’s uncertainty principle based on calculus and on its dynamical version for the heat equation. The reasonings rely on new log-convexity properties and the derivation of ...
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Spectral Transitions for Aharonov-Bohm Laplacians on Conical Layers 

Krejčiřík, D.; Lotoreichik, V.; Ourmières-Bonafos, T. (2016-07-11)
We consider the Laplace operator in a tubular neighbourhood of a conical surface of revolution, subject to an Aharonov-Bohm magnetic field supported on the axis of symmetry and Dirichlet boundary conditions on the boundary ...
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Discreteness of transmission eigenvalues for higher-order main terms and perturbations 

García, A.; Vesalainen, E.V.; Zubeldia, M. (2016-07-01)
In this paper we extend Sylvester's approach via upper triangular compact operators to establish the discreteness of transmission eigenvalues for higher-order main terms and higher-order perturbations. The coefficients of ...
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On the bound states of Schrödinger operators with $\delta$-interactions on conical surfaces 

Lotoreichik, V.; Ourmières-Bonafos, T. (2016-06-30)
In dimension greater than or equal to three, we investigate the spectrum of a Schrödinger operator with a $\delta$-interaction supported on a cone whose cross section is the sphere of codimension two. After decomposing ...
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An Isoperimetric-Type Inequality for Electrostatic Shell Interactions for Dirac Operators 

Arrizabalaga, N.; Mas, A.; Vega, L.Autoridad BCAM (2016-06-01)
In this article we investigate spectral properties of the coupling $H + V_{\lambda}$, where $H =-i\alpha \cdot \nabla + m\beta$ is the free Dirac operator in $\mathbb{R}^3$, $m>0$ and $V_{\lambda}$ is an electrostatic shell ...

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AuthorOurmières-Bonafos, T. (3)Vega, L. (3)García, A. (2)Lotoreichik, V. (2)Arrizabalaga, N. (1)Del Teso, F. (1)Endal, J. (1)Escauriaza, L. (1)Jacobsen, E.R. (1)Kenig, C.E. (1)... másSubjectexistence of bound states (2)Schrödinger operator (2)spectral asymptotics (2)$\delta$-interaction (1)$\delta$-shell interactions (1)Boundary integral equation (1)Bourgain's space (1)Calderón problem (1)conical and hyperconical surfaces (1)conical geometries (1)... másFecha
2016 (8)

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