The aim of the explicit evaluation of the equilibrium thermodynamic properties of the quantum Toda lattice is here reached by a method which reduces the evaluation of quantum statistical averages to a classical configurational integral. This is done by constructing an effective potential of the same form as the original one, whose parameters are renormalized by the quantum fluctuations. In addition to quantum specific heat (in agreement with Bethe ansatz calculations), explicit results for meaningful static correlation functions are reported.
THERMODYNAMICS AND CORRELATIONS OF THE QUANTUM TODA LATTICE / A. CUCCOLI; M. SPICCI; V. TOGNETTI; R. VAIA. - In: PHYSICAL REVIEW. B, CONDENSED MATTER. - ISSN 0163-1829. - STAMPA. - 45:(1992), pp. 10127-10130. [10.1103/PhysRevB.45.10127]
THERMODYNAMICS AND CORRELATIONS OF THE QUANTUM TODA LATTICE
CUCCOLI, ALESSANDRO;TOGNETTI, VALERIO;
1992
Abstract
The aim of the explicit evaluation of the equilibrium thermodynamic properties of the quantum Toda lattice is here reached by a method which reduces the evaluation of quantum statistical averages to a classical configurational integral. This is done by constructing an effective potential of the same form as the original one, whose parameters are renormalized by the quantum fluctuations. In addition to quantum specific heat (in agreement with Bethe ansatz calculations), explicit results for meaningful static correlation functions are reported.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.