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Towards Infrared Finite S-matrix in Quantum Field Theory

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Towards Infrared Finite S-matrix in Quantum Field Theory/ by Hayato Hirai.
作者:	Hirai, Hayato.
面頁冊數:	XIII, 127 p. 5 illus., 4 illus. in color.online resource. :
Contained By:	Springer Nature eBook
標題:	Theoretical, Mathematical and Computational Physics. -
電子資源:	https://doi.org/10.1007/978-981-16-3045-3
ISBN:	9789811630453

Towards Infrared Finite S-matrix in Quantum Field Theory
Hirai, Hayato.

Towards Infrared Finite S-matrix in Quantum Field Theory[electronic resource] /by Hayato Hirai. - 1st ed. 2021. - XIII, 127 p. 5 illus., 4 illus. in color.online resource. - Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5061. - Springer Theses, Recognizing Outstanding Ph.D. Research,.

Introduction and Summary -- Asymptotic Symmetry -- Infrared Divergences -- Equivalence Between Soft Theorem and Asymptotic Symmetry -- Towards the IR nite S-matrix -- Conclusion and Further Discussion -- Appendix. .

This book presents the better understanding of infrared structures of particle scattering processes in quantum electrodynamics (QED) in four-dimensional spacetime. An S-matrix is the fundamental quantity in scattering theory. However, if a theory involves massless particles, such as QED and gravity, the conventional S-matrix has not been well defined due to the infrared divergence, and infrared dynamics thus needs to be understood in-depth to figure out the S-matrix. The book begins with introducing fundamental nature of the charge conservation law associated with asymptotic symmetry, and explaining its relations to soft theorems and memory effect. Subsequently it looks into an appropriate asymptotic state of the S-matrix without infrared divergences. The Faddeev-Kulish dressed state is known as a candidate of such a state, and its gauge invariant condition and its relation to the asymptotic symmetry are discussed. It offers an important building blocks for constructing the S-matrix without infrared divergences.

ISBN: 9789811630453

Standard No.: 10.1007/978-981-16-3045-3doiSubjects--Topical Terms:

768900
Theoretical, Mathematical and Computational Physics.

LC Class. No.: QC793-793.5

Dewey Class. No.: 539.72

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