Reflection amplitudes in non-simply laced Toda theories and Thermodynamic Bethe Ansatz

Changrim Ahn, P. Baseilhac, V. A. Fateev, Chanju Kim, Chaiho Rim

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We study the ultraviolet asymptotics in non-simply laced affine Toda theories considering them as perturbed non-affine Toda theories, which possess the extended conformal symmetry. We calculate the reflection amplitudes, in non-affine Toda theories and use them to derive the quantization condition for the vacuum wave function, describing zero-mode dynamics. The solution of this quantization conditions for the ground state energy determines the UV asymptotics of the effective central charge. These asymptotics are in a good agreement with Thermodynamic Bethe Ansatz (TBA) results. To make the comparison with TBA possible, we give the exact relations between parameters of the action and masses of particles as well as the bulk free energies for non-simply laced affine Toda theories. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)114-124
Number of pages11
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1
StatePublished - 18 May 2000


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