97 citations · 435 across the 37 of their papers we have counts for
37 papers
Pole-Expansion of Two-Hadron Imaginary-Time Correlation Function -a new method of analysis for unstable states in lattice QCD-
Wren Yamada, Osamu Morimatsu, Toru Sato +1
We analyze the pole expansion of the two-hadron imaginary-time correlation function. We first explain the general idea that the imaginary-time correlation function is expressed as…
Survival Probability of Unstable States in Coupled-Channels -- nonexponential decay of "threshold-cusp"
Wren A. Yamada, Osamu Morimatsu, Toru Sato +1
We investigate the survival probability of unstable states, the time-dependence of an initial state, in coupled channels. First, we extend the formulation of the survival probabili…
Analytic Map of Three-Channel S Matrix -Generalized Uniformization and Mittag-Leffler Expansion-
Wren A. Yamada, Osamu Morimatsu, Toru Sato
We explore the analytic structure of the three-channel matrix by generalizing uniformization and making a single-valued map for the three-channel matrix. First, by means of…
Near-threshold Spectrum from Uniformized Mittag-Leffler Expansion -Pole Structure of -
Wren A. Yamada, Osamu Morimatsu, Toru Sato +1
We demonstrate how S-matrix poles manifest themselves as the physical spectrum near the upper threshold in the context of the two-channel uniformized Mittag-Leffler expansion, an e…
Application of the Uniformized Mittag-Leffler Expansion to
Wren Yamada, Osamu Morimatsu
We study the pole properties of in a model-independent manner by applying the Uniformized Mittag-Leffler expansion proposed in our previous paper. The resonant energy, wi…
A New Method to Extract Information of Near-Threshold Resonances: Uniformized Pole-Sum Representation of Green's Function and T-matrix
Wren Yamada, Osamu Morimatsu
We propose a new, simple model-independent method to extract information of near-threshold resonances, such as complex energies and residues. The method is based on the observation…