Browsing by Subject "Quantum mechanics"

Now showing items 1-2 of 2

    • Origin of conical dispersion relations 
      Hojman Guiñerman, Sergio (Sociedad Mexicana de Fisica, 2014)
      A mechanism that produces conical dispersion relations is presented. A Kronig Penney one dimensional array with two different strengths delta function potentials gives rise to both the gap closure and the dispersion relation ...
    • Symmetry transformations in quantum mechanics 
      Cordero, P.; Hojman Guiñerman, Sergio (Società Italiana di Fisica, 1987)
      We introduce a new definition of symmetry transformations in quantum mechanics which contains the textbook definition as a special case. We find several conserved quantities associated with one (nonunitary) symmetry ...