Counting diverging-root eigenstates near special temperatures

Fix the magnetic field in the XXZ chain and let Tm=h2mγT_m=\frac{h}{2m\gamma} with mNm\in\mathbb{N}. Consider eigenstates in the sector with spin ss, equivalently with M=N2sM=\frac{N}{2}-s Bethe roots, at TTmT\sim T_m. Diverging-root counting conjecture. If s+1mN2s+1\le m\le\frac{N}{2}, there are (NN/2m)\binom{N}{N/2-m} eigenstates, out of the total (NM)\binom{N}{M} states in the sector, with msm-s diverging roots. This characterization is based on numerical investigations near the temperatures where roots move to infinity; the counting assertion is not established in the supplied text.

Sources & referencesView supporting material

Primary source

Maxime Dugave, Frank Göhmann, Karol K. Kozlowski and Junji Suzuki, “Low-temperature spectrum of correlation lengths of the XXZ chain in the antiferromagnetic massive regime”, arXiv:1504.07923 (2015).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.