Magnetic permeability of the Dirac vacuum under confining boundary conditions

被引：2
|
作者：
Carvalho, L. [1 ]
Cavalcanti, R. M. [1 ]
Cougo-Pinto, M. V. [1 ]
Farina, C. [1 ]
机构：
[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, Brazil
来源：
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 2006年 / 39卷 / 34期
关键词：
D O I：
10.1088/0305-4470/39/34/022
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We obtain the magnetic properties of the Dirac vacuum confined between two parallel plates. The confinement is implemented by MIT boundary conditions on the Dirac field and the properties are described by corrections to the Euler Heisenberg effective Lagrangian. When the plates are separated by a distance in the range from nanometres to micrometres the new term associates with the vacuum a magnetic susceptibility of the same order of that of hydrogen or nitrogen at room temperature and atmospheric pressure.
引用
收藏
页码：10923 / 10930
页数：8
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