42 citations · 206 across the 36 of their papers we have counts for
7 papers · 1 filter
Geometry of density sates
Luis J. Boya, Kuldeep Dixit
We reconsider the geometry of pure and mixed states in a finite quantum system. The rangesof eigenvalues of the density matrices delimit a regular simplex (Hypertetrahedron TN) in…
Theorem of Levinson Via The Spectral Density
L. J. Boya, J. Casahorran
We deduce Levinson\'{}s theorem in non-relativistic quantum mechanics in one dimension as a sum rule for the spectral density constructed from asymptotic data. We assume a self-adj…
New solvable quantum mechanical potentials by iteration of the free V=0 potential
Pedro Blecua, Luis J. Boya, Antonio Segui
A huge family of solvable potentials can be generated by systematically exploiting the factorization (Darboux) method. Starting from the free case, a large class of the known solva…
Deduction of Planck's Formula from Multiphoton States
Luis J. Boya, Ian M. Duck, E. C. G. Sudarshan
We obtain the black body radiation formula of Planck by considering independent contributions of multiphoton states
Density Matrices and Geometric Phases for n-state Systems
Luis J. Boya, Mark Byrd, Mark Mims +1
An explicit parameterization is given for the density matrices for -state systems. The geometry of the space of pure and mixed states and the entropy of the -state system is…
Strictly isospectral supersymmetry and Schroedinger general zero modes
L. J. Boya, H. Rosu, A. J. Segui-Santonja +1
The connection between the strictly isospectral construction in supersymmetric quantum mechanics and the general zero mode solutions of the Schroedinger equation is explained by in…