Browsing by Author "Babujian, Hratchya M."
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Bethe Ansatz and exact form factors of the O(N) Gross Neveu-model
Babujian, Hratchya M.; Foerster, Angela; Karowski, Michael (2016) [Journal article]We apply previous results on the O(N) Bethe Ansatz [1{3] to construct a general form factor formula for the O(N) Gross-Neveu model. We examine this formula for several operators, such as the energy momentum, the spin- eld ... -
Exact form factors in integrable quantum field theories : the scaling Z(N)-ising model
Babujian, Hratchya M.; Foerster, Angela; Karowski, Michael (2006) [Journal article]A general form factor formula for the scaling Z(N)-Ising model is constructed. Exact expressions of all matrix elements are obtained for several local operators. In addition, the commutation rules for order, disorder ... -
Exact form factors of the O(N) σ-model
Babujian, Hratchya M.; Foerster, Angela; Karowski, Michael (2013) [Journal article]A general form factor formula for the O(N) σ-model is constructed and applied to several operators. The large N limits of these form factors are computed and compared with the 1/N expansion of the O(N) σ-model in terms of ... -
Exact form factors of the SU(N) Gross–Neveu model and 1/N expansion
Babujian, Hratchya M.; Foerster, Angela; Karowski, Michael (2010) [Journal article]The general SU(N) form factor formula is constructed. Exact form factors for the field, the energy–momentum and the current operators are derived and compared with the 1/N-expansion of the chiral Gross–Neveu model and full ...