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$ΛN$ space-exchange correlation effects in $_Λ^5$He hypernucleus

A. A. Usmani
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Abstract

A complete realistic study of $_Λ^5$He hypernucleus is presented using a realistic Hamiltonian and wave function. This study takes into account all relevant dynamical correlations along with $ΛN$ space-exchange correlation (SEC). We also compute $ΛNN$ force and the corelation induced by this force. The SEC affects the central repulsive $λN$ correlation significantly at $r \le 2.0$ fm, specially at its peak and in its vicinity. SEC significantly affects energy breakdown of the hypernucleus, $Λ$-seperation energy, nuclear core (NC) polarization and density profiles. A lage NC polarization is found with and without SEC, respectively. The SEC effect is relatively large in two-pion exchange component of $ΛNN$ force. Therefore, any attempt to pin down the strength of this force with no SEC would be flawed.

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A. A. Usmani. 2004-06-18. $ΛN$ space-exchange correlation effects in $_Λ^5$He hypernucleus. https://doi.org/10.1103/physrevc.73.011302

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