The problem of treating quark degrees of freedom in the nuclear many-body problem is discussed in... more The problem of treating quark degrees of freedom in the nuclear many-body problem is discussed in terms of the Fock-Tani method. This method was originally developed for applications in atomic and molecular physics to investigate physical problems where the in-terna1 degrees of freedom of atoms and molecules cannot be neglected. Given a microscopic Hamiltonian in terms of quark degrees of freedom, it is possible to derive an effective Hamiltonian in terms of nucleon and meson degrees of freedom. To explain the formalism, I use a simple quark model where quarks interact by means of two-body forces and the nucleons are described as bound states of three quarks. Perspectives for realistic applications of the formalism in low-energy hadronic physics are discussed.
In this work we apply the similarity renormalization group (SRG) approach to evolve an effective ... more In this work we apply the similarity renormalization group (SRG) approach to evolve an effective nucleon–nucleon (NN) potential in leading-order (LO) chiral effective field theory (ChEFT). We present the results obtained for a NN potential in the 1S0 channel derived within the framework of the subtracted kernel method (SKM).
The problem of treating quark degrees of freedom in the nuclear many-body problem is discussed in... more The problem of treating quark degrees of freedom in the nuclear many-body problem is discussed in terms of the Fock-Tani method. This method was originally developed for applications in atomic and molecular physics to investigate physical problems where the in-terna1 degrees of freedom of atoms and molecules cannot be neglected. Given a microscopic Hamiltonian in terms of quark degrees of freedom, it is possible to derive an effective Hamiltonian in terms of nucleon and meson degrees of freedom. To explain the formalism, I use a simple quark model where quarks interact by means of two-body forces and the nucleons are described as bound states of three quarks. Perspectives for realistic applications of the formalism in low-energy hadronic physics are discussed.
In this work we apply the similarity renormalization group (SRG) approach to evolve an effective ... more In this work we apply the similarity renormalization group (SRG) approach to evolve an effective nucleon–nucleon (NN) potential in leading-order (LO) chiral effective field theory (ChEFT). We present the results obtained for a NN potential in the 1S0 channel derived within the framework of the subtracted kernel method (SKM).
Uploads
Papers by Gastao Krein