Radiative neutron capture on carbon-14 in effective field theory

Effective field theory (EFT) is a general method for describing quantum systems with multiple-length scales in a tractable fashion. It allows us to perform precise calculations in established models (such as the standard models of particle physics and cosmology), as well as to concisely parametrize possible effects from physics beyond the standard models. EFTs have become key tools in the theoretical analysis of particle physics experiments and cosmological observations, despite being absent from many textbooks. This volume aims to provide a comprehensive introduction to many of the EFTs in use today, and covers topics that include large-scale structure, WIMPs, dark matter, heavy quark effective theory, flavour physics, soft-collinear effective theory, and more.

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Nucleon-nucleon scattering with coupled nucleon-delta channels in chiral effective field theory

Nuclear Physics A ◽

10.1016/j.nuclphysa.2020.121980 ◽

2020 ◽

Vol 1002 ◽

pp. 121980

Author(s):

Susanne Strohmeier ◽

Norbert Kaiser

Keyword(s):

Field Theory ◽

Effective Field Theory ◽

Nucleon Nucleon ◽

Effective Field ◽

Chiral Effective Field Theory ◽

Nucleon Scattering

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The Fujita-Miyazawa force in the light of effective field theory

10.1063/1.2932307 ◽

2008 ◽

Cited By ~ 3

Author(s):

Ulf-G. Meiβner ◽

Hideyuki Sakai ◽

Kimiko Sekiguchi ◽

Benjamin F. Gibson

Keyword(s):

Field Theory ◽

Effective Field Theory ◽

Effective Field

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Towards Feynman rules for conformal blocks

Journal of High Energy Physics ◽

10.1007/jhep01(2021)005 ◽

2021 ◽

Vol 2021 (1) ◽

Author(s):

Sarah Hoback ◽

Sarthak Parikh

Keyword(s):

Field Theory ◽

Effective Field Theory ◽

Hypergeometric Functions ◽

Power Series Expansion ◽

Effective Field ◽

Conformal Block ◽

Tree Level ◽

Conformal Blocks ◽

Simple Set ◽

Feynman Rules

Abstract We conjecture a simple set of “Feynman rules” for constructing n-point global conformal blocks in any channel in d spacetime dimensions, for external and exchanged scalar operators for arbitrary n and d. The vertex factors are given in terms of Lauricella hypergeometric functions of one, two or three variables, and the Feynman rules furnish an explicit power-series expansion in powers of cross-ratios. These rules are conjectured based on previously known results in the literature, which include four-, five- and six-point examples as well as the n-point comb channel blocks. We prove these rules for all previously known cases, as well as two new ones: the seven-point block in a new topology, and all even-point blocks in the “OPE channel.” The proof relies on holographic methods, notably the Feynman rules for Mellin amplitudes of tree-level AdS diagrams in a scalar effective field theory, and is easily applicable to any particular choice of a conformal block beyond those considered in this paper.

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