A new representation-which is similar to the Bargmann representation-of the creation and annihilation operators is introduced, in which the operators act like 'multiplication with' and like 'derivation with respect to' a single real variable. The Hilbert space structure of the corresponding states space is produced and the relations with the Schroedinger representation are derived. Possible connections of this new representation with the asymptotic wavefunctions of the gauge-fixed quantum Chern-Simons field theory and (2+1) gravity are pointed out. It is shown that the representation of the field operator algebra of the Chern-Simons theory in the Landau gauge is not a *-representation; the consequences on the evolution of the states in the semiclassical approximation are discussed.
Representation for creation and annihilation operators
GUADAGNINI, ENORE
2013-01-01
Abstract
A new representation-which is similar to the Bargmann representation-of the creation and annihilation operators is introduced, in which the operators act like 'multiplication with' and like 'derivation with respect to' a single real variable. The Hilbert space structure of the corresponding states space is produced and the relations with the Schroedinger representation are derived. Possible connections of this new representation with the asymptotic wavefunctions of the gauge-fixed quantum Chern-Simons field theory and (2+1) gravity are pointed out. It is shown that the representation of the field operator algebra of the Chern-Simons theory in the Landau gauge is not a *-representation; the consequences on the evolution of the states in the semiclassical approximation are discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
