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23 papers · 1 filter
New Quasi Exactly Solvable Difference Equation
Ryu Sasaki
Exact solvability of two typical examples of the discrete quantum mechanics, i.e. the dynamics of the Meixner-Pollaczek and the continuous Hahn polynomials with full parameters, is…
Orthogonal Polynomials from Hermitian Matrices
Satoru Odake, Ryu Sasaki
A unified theory of orthogonal polynomials of a discrete variable is presented through the eigenvalue problem of hermitian matrices of finite or infinite dimensions. It can be cons…
Second Order Gravitational Effects on CMB Temperature Anisotropy in Lambda dominated flat universes
Kenji Tomita, Kaiki Taro Inoue
We study second order gravitational effects of local inhomogeneities on the cosmic microwave background radiation in flat universes with matter and a cosmological constant . We…
The effect of energy amplification variance on the shock-acceleration
Junichi Aoi, Kohta Murase, Shigehiro Nagataki
The shock-acceleration theory predicts a power-law energy spectrum in the test particle approximation, and there are two ways to calculate a power-law index, Peacock's approximatio…
A new nucleon resonance in eta photoproduction
Ki-Seok Choi, Seung-il Nam, Atsushi Hosaka +1
We present in this talk recent investigations on the nucleon-like resonance N*(1675) newly found in eta photoproduction by the GRAAL, Tohoku LNS-gamma and CB-ELSA collaborations. W…
Multi-Particle Quasi Exactly Solvable Difference Equations
Satoru Odake, Ryu Sasaki
Several explicit examples of multi-particle quasi exactly solvable `discrete' quantum mechanical Hamiltonians are derived by deforming the well-known exactly solvable multi-particl…