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Aspects of scattering amplitudes and...

Mizera, Sebastian.

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Aspects of scattering amplitudes and Moduli space localization

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Aspects of scattering amplitudes and Moduli space localization/ by Sebastian Mizera.
作者:	Mizera, Sebastian.
出版者:	Cham :Springer International Publishing : : 2020.,
面頁冊數:	xvii, 134 p. :ill. (some col.), digital ;24 cm.
內容註:	Chapter1: Introduction -- Chapter2: Intersection Numbers of Twisted Di erential Forms -- Chapter3: Recursion Relations from Braid Matrices -- Chapter4: Further Examples of Intersection Numbers -- Chapter5: Conclusion.
Contained By:	Springer Nature eBook
標題:	Quantum field theory. -
電子資源:	https://doi.org/10.1007/978-3-030-53010-5
ISBN:	9783030530105

Aspects of scattering amplitudes and Moduli space localization
Mizera, Sebastian.

Aspects of scattering amplitudes and Moduli space localization[electronic resource] /by Sebastian Mizera. - Cham :Springer International Publishing :2020. - xvii, 134 p. :ill. (some col.), digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

Chapter1: Introduction -- Chapter2: Intersection Numbers of Twisted Di erential Forms -- Chapter3: Recursion Relations from Braid Matrices -- Chapter4: Further Examples of Intersection Numbers -- Chapter5: Conclusion.

This thesis proposes a new perspective on scattering amplitudes in quantum field theories. Their standard formulation in terms of sums over Feynman diagrams is replaced by a computation of geometric invariants, called intersection numbers, on moduli spaces of Riemann surfaces. It therefore gives a physical interpretation of intersection numbers, which have been extensively studied in the mathematics literature in the context of generalized hypergeometric functions. This book explores physical consequences of this formulation, such as recursion relations, connections to geometry and string theory, as well as a phenomenon called moduli space localization. After reviewing necessary mathematical background, including topology of moduli spaces of Riemann spheres with punctures and its fundamental group, the definition and properties of intersection numbers are presented. A comprehensive list of applications and relations to other objects is given, including those to scattering amplitudes in open- and closed-string theories. The highlights of the thesis are the results regarding localization properties of intersection numbers in two opposite limits: in the low- and the high-energy expansion. In order to facilitate efficient computations of intersection numbers the author introduces recursion relations that exploit fibration properties of the moduli space. These are formulated in terms of so-called braid matrices that encode the information of how points braid around each other on the corresponding Riemann surface. Numerous application of this approach are presented for computation of scattering amplitudes in various gauge and gravity theories. This book comes with an extensive appendix that gives a pedagogical introduction to the topic of homologies with coefficients in a local system.

ISBN: 9783030530105

Standard No.: 10.1007/978-3-030-53010-5doiSubjects--Topical Terms:

523766
Quantum field theory.

LC Class. No.: QC174.45

Dewey Class. No.: 530.143

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520 $a This thesis proposes a new perspective on scattering amplitudes in quantum field theories. Their standard formulation in terms of sums over Feynman diagrams is replaced by a computation of geometric invariants, called intersection numbers, on moduli spaces of Riemann surfaces. It therefore gives a physical interpretation of intersection numbers, which have been extensively studied in the mathematics literature in the context of generalized hypergeometric functions. This book explores physical consequences of this formulation, such as recursion relations, connections to geometry and string theory, as well as a phenomenon called moduli space localization. After reviewing necessary mathematical background, including topology of moduli spaces of Riemann spheres with punctures and its fundamental group, the definition and properties of intersection numbers are presented. A comprehensive list of applications and relations to other objects is given, including those to scattering amplitudes in open- and closed-string theories. The highlights of the thesis are the results regarding localization properties of intersection numbers in two opposite limits: in the low- and the high-energy expansion. In order to facilitate efficient computations of intersection numbers the author introduces recursion relations that exploit fibration properties of the moduli space. These are formulated in terms of so-called braid matrices that encode the information of how points braid around each other on the corresponding Riemann surface. Numerous application of this approach are presented for computation of scattering amplitudes in various gauge and gravity theories. This book comes with an extensive appendix that gives a pedagogical introduction to the topic of homologies with coefficients in a local system.
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