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Normal ordering normal modes

文献类型：期刊论文

作者Jarah Evslin2
刊名The European Physical Journal C
出版日期2021
卷号81期号:1页码:18
ISSN号1434-6044
DOI10.1140/epjc/s10052-021-08890-7
通讯作者Evslin, Jarah(jarah@impcas.ac.cn)
英文摘要In a soliton sector of a quantum field theory, it is often convenient to expand the quantum fields in terms of normal modes. Normal mode creation and annihilation operators can be normal ordered, and their normal ordered products have vanishing expectation values in the one-loop soliton ground state. The Hamiltonian of the theory, however, is usually normal ordered in the basis of operators which create plane waves. In this paper we find the Wick map between the two normal orderings. For concreteness, we restrict our attention to Schrodinger picture scalar fields in 1+1 dimensions, although we expect that our results readily generalize beyond this case. We find that plane wave ordered n -point functions of fields are sums of terms which factorize into j -point functions of zero modes, breather and continuum normal modes. We find a recursion formula in j and, for products of fields at the same point, we solve the recursion formula at all j .
WOS关键词QUANTUM ; SPECTRUM ; MASS
资助项目CAS Key Research Program of Frontier Sciences[QYZDY-SSW-SLH006] ; NSFC MianShang grants[11875296] ; NSFC MianShang grants[11675223] ; Recruitment Program of High-end Foreign Experts
WOS研究方向Physics
语种英语
WOS记录号WOS:000613546200006
出版者SPRINGER
资助机构CAS Key Research Program of Frontier Sciences ; NSFC MianShang grants ; Recruitment Program of High-end Foreign Experts
源URL[http://119.78.100.186/handle/113462/136934]  
专题中国科学院近代物理研究所
作者单位1.中国科学院大学
2.Institute of Modern Physics, Chinese Academy of Sciences
推荐引用方式
GB/T 7714		 Jarah Evslin. Normal ordering normal modes[J]. The European Physical Journal C,2021,81(1):18.
APA Jarah Evslin.(2021).Normal ordering normal modes.The European Physical Journal C,81(1),18.
MLA Jarah Evslin."Normal ordering normal modes".The European Physical Journal C 81.1(2021):18.

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来源：近代物理研究所

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