Archivio Istituzionale della RicercaAn explicit and finite algorithm is derived, allowing the exact expansion of z=exp(x+ lambda y) for non-commuting x and y, up to second order in lambda . Such an expansion is the inverse of the usual Hausdorff-Baker-Campbell formula. The matrix elements of z are computed, and as an application, the Duhamel two-point function obtained.
Some new results in non-commutative algebra in the calculation of a two-point function / Buzano, Carla; Rasetti, Mario; Vadacchino, M.. - In: JOURNAL OF PHYSICS. A, MATHEMATICAL AND GENERAL. - ISSN 0305-4470. - 11:6(1978), pp. 1001-1008. [10.1088/0305-4470/11/6/004]
Some new results in non-commutative algebra in the calculation of a two-point function
BUZANO, Carla;RASETTI, Mario;
1978
Abstract
An explicit and finite algorithm is derived, allowing the exact expansion of z=exp(x+ lambda y) for non-commuting x and y, up to second order in lambda . Such an expansion is the inverse of the usual Hausdorff-Baker-Campbell formula. The matrix elements of z are computed, and as an application, the Duhamel two-point function obtained.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11583/1846014
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo