Lineair Chain with Free End Boundary Conditions
作者:
Miguel Kiwi,
Jaime Rössler,
期刊:
American Journal of Physics
(AIP Available online 1972)
卷期:
Volume 40,
issue 1
页码: 143-151
ISSN:0002-9505
年代: 1972
DOI:10.1119/1.1986461
出版商: American Association of Physics Teachers
数据来源: AIP
摘要:
The problem of energy propagation through a one-dimensional open-ended finite chain is critically re-examined. Free end boundary conditions are imposed and quantum-field-theory operators, consistent with these boundary conditions, are derived for both the local and total energy current operators, avoiding the shortcomings of previous work reported on the subject. The formal treatment is illustrated through an example, and a comparison with results obtained with cyclic boundary conditions is given.
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