npsm 새물리 New Physics : Sae Mulli

pISSN 0374-4914 eISSN 2289-0041
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Article

Research Paper

New Physics: Sae Mulli 2009; 58: 649-653

Published online June 30, 2009

Copyright © New Physics: Sae Mulli.

Perturbation Theories of Quantum Mechanics and 1+0-dimensional Quantum Field Theory

Won Sik L'YI*

Department of Physics, Chungbuk National University, Cheongju 360-763

Correspondence to:wslyi@chungbuk.ac.kr

Abstract

As a toy model for understanding quantum field theory, we approached time-independent pertur-bation theory of quantum mechanics as 1 + 0-dimensional quantum field theory. This idea can be extended to the usual quantum field theory in a natural way. As an example of this, we compare the quantum an harmonic x4 theory to Φ 4 quantum field theory. 

Keywords: Quantum theory, Perturbation theory, Field Theory

1+0 차원 양자장이론으로 본 양자역학의 섭동론본 논문에서는 양자역학의 시간에 무관한 섭동론을 1+0 차원 양자장론적 섭동론으로 다루었다. 이러한 양자역학의 섭동론은 자연스럽게 양자장론으로 확장이 되는데, 그 응용의 예로서 x4 항이 있는 양자역학적 비조화진동자의 섭동이론을 Feynmann 도형으로 설명하였고, 이를 사용하여 Φ4 양자장이론의 섭동론적인 전개를 설명하였다.

Keywords: Quantum theory, Perturbation theory, Field Theory

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