High-order connected moments expansion for the Rabi Hamiltonian

• Authors: Paolo Amore , Francisco Fernandez , Martin Rodriguez
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

connected moment expansion; Rabi Hamiltonian

• Journal: Open Physics
• Year: 2012
• Volume: 10
• Issue: 1
• Pages: 102-108

Dates

published

1 - 2 - 2012

online

3 - 12 - 2011

Contributors

author

Paolo Amore

• Facultad de Ciencias, CUICBAS, Universidad de Colima, Bernal Díaz del Castillo 340, Colima, Colima, México,

author

Francisco Fernandez

• 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

author

Martin Rodriguez

• Facultad de Ciencias, CUICBAS, Universidad de Colima, Bernal Díaz del Castillo 340, Colima, Colima, México

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Identifiers

DOI

10.2478/s11534-011-0101-9