Itaru Sasaki

activity

20062013

most citedNote on the spectrum of discrete Schrödinger operators

7 citations · 14 across the 5 of their papers we have counts for

collaborators

Showing 2012Show all

2 papers · 1 filter

math-ph2012★ 7 cited

Note on the spectrum of discrete Schrödinger operators

Fumio Hiroshima, Itaru Sasaki, Tomoyuki Shirai +1

The spectrum of discrete Schrödinger operator $L + V$ on the $d$ -dimensional lattice is considered, where $L$ denotes the discrete Laplacian and $V$ a delta function with mass at a s…

math.SP2012

Multiplicity of the lowest eigenvalue of non-commuatative harmonic oscillators

Fumio Hiroshima, Itaru Sasaki

The multiplicity of the lowest eigenvalue E of the so-called non-commutative harmonic oscillator Q(α,β) is studied. It is shown that E is simple for αand βin some region.