International Journal of High Energy Physics

Volume 10, Issue 1, June 2023

  • Generalized Spin-Wave Theory for the Hubbard Model and D-theory Formulation

    Subhamoy Singha Roy

    Issue: Volume 10, Issue 1, June 2023
    Pages: 1-6
    Received: 8 November 2022
    Accepted: 9 January 2023
    Published: 24 February 2023
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    Abstract: It is pointed out that the low energy effective theory of a generalized spin system relates to the more generalized system shown by the Hubbard-like model. When the onsite repulsion is assumed to be provided by hard-core repulsion, a generalized fermion with flavour and colour degrees of freedom is used to define the Hubbard-like Hamiltonian in thi... Show More
  • Low-Energy Effective Theories of the 1/2 - Filled Hubbard Model in the Continuum Limit

    Subhamoy Singha Roy

    Issue: Volume 10, Issue 1, June 2023
    Pages: 7-11
    Received: 8 November 2022
    Accepted: 9 January 2023
    Published: 24 February 2023
    Downloads:
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    Abstract: It has been observed that when the gauge fields are present on the link, fermion propagation is possible in the weak coupling limit due to the dominance of the hopping term, which corresponds to the colour gauge interaction in the lattice QCD formulation. The production of low energy skyrmionic excitation at the fermionic site destroys the underlyi... Show More