Перегляд за автором "Mancini, F."

Сортувати за: Порядок: Результатів:

  • A class of solvable models in Condensed Matter Physics 
    Mancini, F. (Condensed Matter Physics, 2006)
    In this paper, we show that there is a large class of fermionic systems for which it is possible to find, for any dimension, a finite closed set of eigenoperators and eigenvalues of the Hamiltonian. Then, the hierarchy ...
  • Ergodicity in strongly correlated systems 
    Avella, A.; Mancini, F.; Plekhanov, E. (Condensed Matter Physics, 2006)
    We present a concise and systematic review of the ergodicity issue in strongly correlated systems. After giving a brief historical overview, we analyze the issue within the Green’s function formalism by means of the ...
  • Green’s function formalism for highly correlated systems 
    Mancini, F.; Avella, A. (Condensed Matter Physics, 2006)
    We present the Composite Operator Method (COM) as a modern approach to the study of strongly correlated electronic systems, based on the equation of motion and Green’s function method. COM uses propagators of composite ...
  • Magnetic and thermal properties of a one-dimensional spin-1 model 
    Mancini, F.; Mancini, F.P. (Condensed Matter Physics, 2008)
    We study the one-dimensional S = 1 Blume-Emery-Grif ths model. Upon transforming the spin model into an equivalent fermionic model, we provide the exact solution within the Green's function and equations of motion ...
  • Symmetries in the physics of strongly correlated electronic systems 
    Mancini, F.; Avella, A. (Condensed Matter Physics, 1998)
    Strongly correlated electron systems require the development of new theoretical schemes in order to describe their unusual and unexpected properties. The usual perturbation schemes are inadequate and new concepts ...