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Finite-Temperature Form Factors: a Review
Репозиторій DSpace/Manakin
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- Symmetry, Integrability and Geometry: Methods and Applications (SIGMA)
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- Symmetry, Integrability and Geometry: Methods and Applications, 2007, том 3
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Finite-Temperature Form Factors: a Review
Інший ID:
2000 Mathematics Subject Classification: 81T40
Посилання:
Finite-Temperature Form Factors: a Review / B. Doyon // Symmetry, Integrability and Geometry: Methods and Applications. — 2007. — Т. 3. — Бібліогр.: 49 назв. — англ.
Підтримка:
This paper is a contribution to the Proceedings of the O’Raifeartaigh Symposium on Non-Perturbative and Symmetry Methods in Field Theory (June 22–24, 2006, Budapest, Hungary). I am grateful to F. Essler for many useful discussions and continued interest in this work, and to A. Gamsa for reading through the manuscript. I would like to acknowledge support from an EPSRC (UK) post-doctoral fellowship (grant GR/S91086/01).
Дата:
2007
Переглядів:
483
Завантажень:
219
Анотація:
We review the concept of finite-temperature form factor that was introduced recently by the author in the context of the Majorana theory. Finite-temperature form factors can be used to obtain spectral decompositions of finite-temperature correlation functions in a way that mimics the form-factor expansion of the zero temperature case. We develop the concept in the general factorised scattering set-up of integrable quantum field theory, list certain expected properties and present the full construction in the case of the massive Majorana theory, including how it can be applied to the calculation of correlation functions in the quantum Ising model. In particular, we include the ''twisted construction'', which was not developed before and which is essential for the application to the quantum Ising model.
