68 citations · 1.4k across the 81 of their papers we have counts for
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Singular eigenstates in the even(odd) length Heisenberg spin chain
Pulak Ranjan Giri, Tetsuo Deguchi
We study the implications of the regularization for the singular solutions on the even(odd) length spin-1/2 XXX chains in some specific down-spin sectors. In particular, the analyt…
Non Self-conjugate Strings, Singular Strings and Rigged Configurations in the Heisenberg Model
Tetsuo Deguchi, Pulak Ranjan Giri
We observe a different type of complex solutions in the isotropic spin-1/2 Heisenberg chain starting from N=12, where the central rapidity of some of the odd-length strings becomes…
Finite-temperature behavior of an impurity in the spin-1/2 XXZ chain
Ryoko Yahagi, Jun Sato, Tetsuo Deguchi
We study the zero- and the finite-temperature behavior of the integrable spin-1/2 XXZ periodic chain with an impurity by the algebraic and thermal Bethe ansatz methods. We evaluate…
Exact quantum dynamics of yrast states in the finite 1D Bose gas
Eriko Kaminishi, Jun Sato, Tetsuo Deguchi
We demonstrate that the quantum dynamics of yrast states in the one-dimensional (1D) Bose gas gives an illustrative example to equilibration of an isolated quantum many-body system…