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Based on the generalized hidden local symmetry as the chiral model ofpseudoscalar, vector, and axial vector mesons, the excitation curve of thereaction e^+e^-\to\pi^+\pi^-\pi^+\pi^- is calculated for energies in theinterval 0.65\leq \sqrt{s}\leq1 GeV. The theoretical predictions are comparedto available data of CMD-2 and BaBaR. It is shown that the inclusion of heavyisovector resonances \rho(1450) and \rho(1700) is necessary for reconcilingcalculations with the data. It is found that at \sqrt{s}\approx1 GeV thecontributions of the above resonances are much larger, by the factor of 30,than the \rho(770) one, and are amount to a considerable fraction \sim0.3-0.6of the latter at \sqrt{s}\sim m_\rho.

Hidden local symmetry and the reaction e^+e^-\to\pi^+\pi^-\pi^+\pi^- at energies \sqrt{s}\leq 1 GeV