Source Title:
Open Physics
|
Volume/Issue:
Volume 10: Issue 1

High-order connected moments expansion for the Rabi Hamiltonian

Paolo Amore 1 , Francisco Fernandez 2 , and Martin Rodriguez 1
  • 1 Facultad de Ciencias, CUICBAS, Universidad de Colima, Bernal Díaz del Castillo 340, Colima, Colima, México
  • 2 INIFTA (UNLP, CCT La Plata-CONICET), División Química Teórica, Blvd. 113 y 64 (S/N), Sucursal 4, Casilla de Correo 16, 1900, La Plata, Argentina
DOI:
https://doi.org/10.2478/s11534-011-0101-9
|
Published online:
03 Dec 2011
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Abstract

We analyze the convergence properties of the connected moments expansion (CMX) for the Rabi Hamiltonian. To this end we calculate the moments and connected moments of the Hamiltonian operator to a sufficiently large order. Our large-order results suggest that the CMX is not reliable for most practical purposes because the expansion exhibits considerable oscillations.

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OPEN ACCESS

Journal + Issues

Open Physics

Online ISSN:
2391-5471
First published:
14 Jan 2015
Language:
English
Publisher:
De Gruyter

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