Correlations in the nuclear wave-function beyond the mean-field or Hartree-Fock approximation are very important to describe basic properties of nuclear structure. Various approaches to account for such correlations are described and compared to each other. This includes the hole-line expansion, the coupled cluster or “exponential S” approach, the self-consistent evaluation of Greens functions,...

viii Chapter 1 Ultracold Bosonic Atoms in Optical Lattices 1 1.1 Optical Lattices . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Scattering Theory . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.3 Bosons in Lattices: The Bose Hubbard Model . . . . . . . . . 14 Chapter 2 Quantum Theory of Ultracold Bosons in Lattices 17 2.1 Formalism . . . . . . . . . . . . . . . . . . . . . . ....

Within the finite-temperature Greens-function formalism we study the equation of state of a hot interacting pion gas at zero chemical potential. Employing realistic ππ meson-exchange interactions we selfconsistently calculate the in-medium single-pion selfenergy and the ππ scattering amplitude in the quasiparticle approximation. These quantities are then used to evaluate the thermodynamic poten...

Sustainable Food Yard (P2L) activities utilize a sustainable agricultural approach, utilization of local resources, community empowerment, and marketing orientation. The Edelweiss P2L group in Pilangbango Village, Kartoharjo District, Madiun City, consists homemakers who have yards but need basic knowledge good farming crop yields. Community service aim to turn the results program into value-ad...

We present a Greens function approach to calculate the Dzyaloshinskii-Moriya interactions (DMI) from first principles electronic structure calculations, that is computationally more efficient and accurate than most-commonly employed supercell generalized Bloch-based approaches. The method applied (111) Co/Pt bilayer where Co- and/or Pt-thickness dependence of DMI coefficients are calculated. Ov...

We present a path integral formalism for quantising the spectral action of noncommutative geometry, based on the principle of summing over all Dirac operators. The approach is demonstrated on two simple finite noncommutative geometries. On the first, the graviton is described by a Higgs field, and on the second, it is described by a gauge field. We start with the partition function, and calcula...