All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”
EN
ČeštinaEnglish

Filters

7 621 (0,122s) •

Result

Asymptotic spectral analysis in colliding leaky quantum layers

We consider the Schrodinger operator with a complex delta interaction supported by two parallel hypersurfaces in the Euclidean space of any dimension. We analyse spectral properties of the system in the limit when the distance between the hypersurfac...

Applied mathematics

  • 2017
    • •
  • Jimp
    • •
  • Link
Result

Scattering by local deformations of a straight leaky wire

We consider a model of a leaky quantum wire with the Hamiltonian -Delta - alpha delta(x - Gamma) in L-2(R-2), where Gamma is a compact deformation of a straight line. The existence of wave operators is proven and the S-matrix is found for th...

BE - Teoretická fyzika

  • 2005
    • •
  • Jx
Result

Absolute Continuity of the Spectrum for Periodically Modulated Leaky Wires in R^3

We consider a model of leaky quantum wires in three dimensions. The Hamiltonian is a singular perturbation of the Laplacian supported by a line with the coupling which is bounded and periodically modulated along the line. We demonstrate that...

BE - Teoretická fyzika

  • 2007
    • •
  • Jx
Result

Optimization of the lowest eigenvalue for leaky star graphs

We consider the problem of geometric optimization for the lowest eigenvalue of the two-dimensional Schriidinger operator with an attractive (5 interaction of a fixed strength, the support of which is a star graph with finitely many edges of ...

Mathematics

  • 2018
    • •
  • D
    • •
  • Link
Result

Optimization of the lowest eigenvalue for leaky star graphs

We consider the problem of geometric optimization for the lowest eigenvalue of the two-imensional Schrödinger operator with an attractive delta-interaction of a fixed strength, the support of which is a star graph with finitely many edges is...

Pure mathematics

  • 2018
    • •
  • C
    • •
  • Link
Result

Coplanar Leaky Wave Antenna

This paper presents the results of an investigation of a coplanar leaky wave antenna with wide slots. The antenna radiation is based on the excitation of space leaky wave of the first order. The coplanar leaky wave antenna ...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2004
    • •
  • D
Result

Design of the Coplanar Leaky Wave Antenna

First, this paper presents the results of an investigation of a coplanar leaky of a space leaky wave of the first order. A prototype of coplanar leaky wave antenna was designed, fabricated and then measured. Second, a condu...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2004
    • •
  • A
Result

Coplanar Leaky Wave Antenna

This paper presents the results of an investigation of a coplanar leaky wave antenna with wide slots. The antenna radiation is based on excitation of a space leaky wave of the first order. A prototype coplanar leaky wave an...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2004
    • •
  • D
Result

Visualization of Leaky Waves on Planar Transmission Lines

This peper presents a visulaization of leaky waves excieted by delta-gap sources on planar transmission lines, namely the 2nd surface and space leaky modes on the slotline, and the dominant and surface leaky modes on the co...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2005
    • •
  • D
Result

Visualization of Leaky Waves on Planar Transmission Lines

This paper presents a visualization of leaky waves excited by delta-gap sources on planar transmission lines, namely the 2nd surface and space leaky modes on the slotline, and the dominant and surface leaky modes on the con...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2004
    • •
  • D
  • 1 - 10 out of 7 621