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Extraction of nucleus-nucleus potential and energy dissipation from dynamical mean-field theory

Nucleus‐nucleus interaction potentials in heavy‐ion fusion reactions are extracted from the microscopic time‐dependent Hartree‐Fock theory. When the center‐of‐mass energy is much higher than the Coulomb barrier energy, extracted potentials identify with the frozen density approximation. As the center‐of‐mass energy decreases to the Coulomb barrier energy, potentials become energy dependent. This dependence indicates dynamical reorganization of internal degrees of freedom and leads to a reduction of the “apparent” barrier. Including this effect leads to the Coulomb barrier energy very close to experimental one. Aspects of one‐body energy dissipation extracted from the mean‐field theory are discussed.