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The kaonic clusters $K^{-}K^{-}p$ and $ppK^{-}$ are described based on the configuration space Faddeev equations for $AAB$ system. The $AB$ interaction is given by isospin-dependent potentials. For this isospin model, we show that the relation $leftvert E_{3}(V_{AA}=0)rightvert~<~2leftvert E_{2}rightvert$ is satisfied when $E_{2}$ is the binding energy of the $AB$ subsystem and $E_{3}(V_{AA}=0)$ is the three-body binding energy when interaction between identical particles is omitted, $V_{AA}=0$. For the $NN{bar K}$ system, taking into account weak attraction of $NN$ interaction the relation leads to the evaluation $|E_3|le 2|E_2|$. The isospinless model for the kaonic clusters based on the isospin averaged $N{bar K}$ potential demonstrates the opposite relation $leftvert E_{3}(V_{AA}=0)rightvert~>~2leftvert E_{2}rightvert$. The isospin given charge formalism is presented for $NN{bar K}$ cluster. This formalism is related to isospin model by unitary transformation of the isospin basis. An interpretation of the particle representation for $NN{bar K}$ system is proposed.
We evaluate the mass polarization term of the kinetic-energy operator for different three-body nuclear $AAB$ systems by employing the method of Faddeev equations in configuration space. For a three-boson system this term is determined by the differen
We report quantum Monte Carlo calculations of single-$Lambda$ hypernuclei for $A<50$ based on phenomenological two- and three-body hyperon-nucleon forces. We present results for the $Lambda$ separation energy in different hyperon orbits, showing that
In the model of low-energy bar-K N interactions near threshold (EPJA 21, 11 (2004); 25, 79 (2005)) we calculate isospin-breaking corrections to the energy level displacement of the ground state of kaonic hydrogen, investigated by Meissner, Raha and R
We have studied in the mechanical and chemical instabilities as well as the liquid-gas phase transition in isospin asymmetric quark matter based on the NJL and the pNJL model. Areas of the mechanical instability region and the liquid-gas coexistence
We show that the contributions of three-quasiparticle interactions to normal Fermi systems at low energies and temperatures are suppressed by n_q/n compared to two-body interactions, where n_q is the density of excited or added quasiparticles and n i