Poster Session (PSb-01～PSb-45)

[PSb-05] Exact quantum number for the real and complex Bethe solutions
in the two down-spin sector of the spin-1/2 massive XXZ spin chain

*Takashi Imoto¹, Jun Sato², Tetsuo Deguchi³ (1. National Institute of Advanced Industrial Science and Technology (AIST), 2. Faculty of Engineering, Tokyo Polytechnic University, 3. Department of Physics, Faculty of Core Research, Ochanomizu University)

Keywords:Bethe ansatz, Quantum integrable system, Heisenberg spin chain, XXZ spin chain