Self-consistent relativistic random-phase approximation with vacuum polarization

被引：5
|
作者：
Haga, A [1 ]
Toki, H
Tamenaga, S
Horikawa, Y
Yadav, HL
机构：
[1] Osaka Univ, Res Ctr Nucl Phys, Ibaraki, Osaka 5670047, Japan
[2] Nagoya Inst Technol, Dept Engn Phys Elect & Mech, Nagoya, Aichi 4668555, Japan
[3] Juntendo Univ, Dept Phys, Chiba 2701695, Japan
[4] Univ Rajasthan, Dept Phys, Jaipur 302004, Rajasthan, India
来源：
PHYSICAL REVIEW C | 2005年 / 72卷 / 03期
关键词：
D O I：
10.1103/PhysRevC.72.034301
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We present a theoretical formulation for the description of nuclear excitations within the framework of a relativistic random-phase approximation whereby the vacuum polarization arising from nucleon-antinucleon fields is duly accounted for. The vacuum contribution to the Lagrangian is explicitly described as extra new terms of interacting mesons by means of the derivative expansion of the effective action. It is shown that the self-consistent calculation yields zero eigenvalue for the spurious isoscalar-dipole state and also conserves the vector-current density.
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页数：4
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