Now showing items 11-16 of 16

    • ON SELFSIMILARITIES OF CUTANDPROJECT SETS 

      Author: Masáková , Zuzana; Mazáč , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Among the commonly used mathematical models of quasicrystals are Delone sets constructed using a cut-and-project scheme, the so-called cut-and-project sets. A cut-and-project scheme (L,π1, π2) is given by a lattice L in Rs ...
    • ON THE COMMON LIMIT OF THE PTSYMMETRIC ROSEN–MORSE II AND FINITE SQUARE WELL POTENTIALS 

      Author: Kovács , József; Lévai , Géza
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Two PT-symmetric potentials are compared, which possess asymptotically finite imaginary components: the PT-symmetric Rosen-Morse II and the finite PT-symmetric square well potentials. Despite their different mathematical ...
    • ON THE SPECTRUM OF THE ONEDIMENSIONAL SCHRÖDINGER HAMILTONIAN PERTURBED BY AN ATTRACTIVE GAUSSIAN POTENTIAL 

      Author: Fassari , Silvestro; Gadella , Manuel; Nieto Miguel, Luis; Rinaldi , Fabio
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      We propose a new approach to the problem of finding the eigenvalues (energy levels) in the discrete spectrum of the one-dimensional Hamiltonian with an attractive Gaussian potential by using the well-known Birman-Schwinger ...
    • RATIONALLY EXTENDED SHAPE INVARIANT POTENTIALS IN ARBITRARY D DIMENSIONS ASSOCIATED WITH EXCEPTIONAL Xm POLYNOMIALS 

      Author: Yadav Kumar, Rajesh; Kumari , Nisha; Khare , Avinash; Mandal Prasad, Bhabani
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Rationally extended shape invariant potentials in arbitrary D-dimensions are obtained by using point canonical transformation (PCT) method. The bound-state solutions of these exactly solvable potentials can be written in ...
    • SIMPLE MODELS OF THREE COUPLED PT SYMMETRIC WAVE GUIDES ALLOWING FOR THIRDORDER EXCEPTIONAL POINTS 

      Author: Schnabel , Jan; Cartarius , Holger; Main , Jörg; Wunner , Günter; Heiss , Walter Dieter
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      We study theoretical models of three coupled wave guides with a PT-symmetric distribution of gain and loss. A realistic matrix model is developed in terms of a three-mode expansion. By comparing with a previously postulated ...
    • THE ANALYSIS OF IMAGES IN NPOINT GRAVITATIONAL LENS BY METHODS OF ALGEBRAIC GEOMETRY 

      Author: Kotvytskiy , Albert; Bronza , Semen; Shablenko , Vladimir
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      This paper is devoted to the study of images in N-point gravitational lenses by methods of algebraic geometry. In the beginning, we carefully define images in algebraic terms. Based on the definition, we show that in this ...