activity
19982019
most citedSpectral inclusion and spectral exactness for singular non-selfadjoint Sturm-Liouville problems

23 citations · 69 across the 12 of their papers we have counts for

collaborators

13 papers

math.SP2019

Gap Localization of TE-Modes by arbitrarily weak defects - multiband case

B. M. Brown, V. Hoang, M. Plum +2

This paper considers the propagation of TE-modes in photonic crystal waveguides. The waveguide is created by introducing a linear defect into a periodic background medium. Both the…

math.FA2018★ 7 cited

The functional model for maximal dissipative operators: An approach in the spirit of operator knots

B. M. Brown, M. Marletta, S. Naboko +1

In this article we develop a functional model for a general maximal dissipative operator. We construct the selfadjoint dilation of such operators. Unlike previous functional models…

math.SP2017

Weyl Solutions and J-selfadjointness for Dirac operators

B. Malcolm Brown, Martin Klaus, Mark Malamud +2

We consider a non-selfadjoint Dirac-type differential expression \begin{equation} D(Q)y:= J_n \frac{dy}{dx} + Q(x)y, \quad\quad\quad (1) \end{equation} with a non-selfadjoint poten…

math-ph2015★ 3 cited

Gap localization of TE-Modes by arbitrarily weak defects

Malcolm Brown, Vu Hoang, Michael Plum +2

This paper considers the propagation of TE-modes in photonic crystal waveguides. The waveguide is created by introducing a linear defect into a periodic background medium. Both the…

math.SP2014★ 4 cited

An abstract inverse problem for boundary triples with an application to the Friedrichs Model

B. M. Brown, M. Marletta, S. N. Naboko +1

We discuss the detectable subspaces of an operator. We analyse the relation between the M-function (the abstract Dirichlet to Neumann map) and the resolvent bordered by projections…

math.SP2013

Spectrum created by line defects in periodic structures

B. M. Brown, V. Hoang, M. Plum +1

The spectrum of periodic differential operators typically exhibits a band-gap structure. In this paper, we will consider perturbations to periodic differential operators and invest…