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Abstract:

A many‐fermion interacting system is investigated within the scenario of the Feynman path integral representation of quantum mechanics. Short‐time propagator algorithms and a basis set, closely related to the coherent states, are used to obtain the many‐body analytic propagator. A second‐quantized Hamiltonian involving a restricted set of two‐body interactions and the whole set of Coulomb interactions are separately and shown to lead to an exact and an approximate propagator, respectively. In the latter case, use of a grand canonical ensemble allows the grand partition function and the density operator matrix to be readily obtained. No further approximations are required in the calculation of the trace of the evolution operator involved in the evaluation of statistical expectation values. © 1994 John Wiley & Sons, Inc. Copyright © 1994 John Wiley & Sons, Inc.

Registro:

Documento: Artículo
Título:Feynman path integral representation for many‐fermion interacting systems
Autor:Calamante, F.; Bochicchio, R.C.; Grinberg, H.
Filiación:Departmento de Física, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina
Año:1994
Volumen:49
Número:6
Página de inicio:789
Página de fin:804
DOI: http://dx.doi.org/10.1002/qua.560490604
Título revista:International Journal of Quantum Chemistry
Título revista abreviado:Int J Quantum Chem
ISSN:00207608
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00207608_v49_n6_p789_Calamante

Referencias:

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Citas:

---------- APA ----------
Calamante, F., Bochicchio, R.C. & Grinberg, H. (1994) . Feynman path integral representation for many‐fermion interacting systems. International Journal of Quantum Chemistry, 49(6), 789-804.
http://dx.doi.org/10.1002/qua.560490604
---------- CHICAGO ----------
Calamante, F., Bochicchio, R.C., Grinberg, H. "Feynman path integral representation for many‐fermion interacting systems" . International Journal of Quantum Chemistry 49, no. 6 (1994) : 789-804.
http://dx.doi.org/10.1002/qua.560490604
---------- MLA ----------
Calamante, F., Bochicchio, R.C., Grinberg, H. "Feynman path integral representation for many‐fermion interacting systems" . International Journal of Quantum Chemistry, vol. 49, no. 6, 1994, pp. 789-804.
http://dx.doi.org/10.1002/qua.560490604
---------- VANCOUVER ----------
Calamante, F., Bochicchio, R.C., Grinberg, H. Feynman path integral representation for many‐fermion interacting systems. Int J Quantum Chem. 1994;49(6):789-804.
http://dx.doi.org/10.1002/qua.560490604