Integrable string models of hydrodynamical type
Abstract:
The closed string models are considered as the bi-Hamiltonian systems
of hydrodynamical type. The local Poisson bracket (PB) of Dubrovin-Novikov,
a general nonlocal (PB) of Ferapontov and nonlocal (PB) of Mokhov-Ferapontov
for constant curvature surface were used to construct nonlinearb integrable
string models of hydrodynamical type. The recursion operator was constructed.
The second string Hamiltonian was obtained.