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CONVERGENCE OF THE OPTIMIZED DELTA-EXPANSION FOR THE CONNECTED VACUUM AMPLITUDE - ANHARMONIC-OSCILLATOR

被引：46
作者：
ARVANITIS, C
JONES, HF
PARKER, CS
机构：
[1] Physics Department, Imperial College
来源：
PHYSICAL REVIEW D | 1995年 / 52卷 / 06期
关键词：
D O I：
10.1103/PhysRevD.52.3704
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The convergence of the linear delta expansion for the connected generating functional of the quantum anharmonic oscillator is proved. Using an order-dependent scaling for the variational parameter lambda, we show that the expansion converges to the exact result with an error bounded by A exp(-cN(1/3)).
引用
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页码：3704 / 3711
页数：8
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