High-order connected moments expansion for the Rabi Hamiltonian

被引：1

作者：

Amore, Paolo ^{[2
]}

Fernandez, Francisco M. ^{[1
,3
]}

Rodriguez, Martin ^{[2
]}

机构：

[1] CCT Plata CONICET, Div Quim Terica, INIFTA UNLP, RA-1900 La Plata, Argentina

[2] Univ Colima, CUICBAS, Fac Ciencias, Colima, Mexico

[3] UNLP, CCT La Plata, CONICET, INIFTA,Div Quim Teor, RA-1900 La Plata, Argentina

来源：

CENTRAL EUROPEAN JOURNAL OF PHYSICS | 2012年 / 10卷 / 01期

关键词：

connected moment expansion; Rabi Hamiltonian; GROUND-STATE ENERGY; ZERO-POINT ENERGY; T-EXPANSION; ANALYTIC PROPERTIES; APPROXIMATIONS; TOOL;

D O I：

10.2478/s11534-011-0101-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：102 / 108

页数：7

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