Soft-Theorems for Scalar Particles: The Dilatons Story

Abstract

We summarize recent results regarding single and double soft theorems of two different particles named dilatons, the Nambu-Goldstone boson of the spontaneously broken conformal field theories and the massless scalar particle of the closed string theories. Similarities and differences between the soft theorems of these two particles are discussed as well as their connections with the symmetries of the theories.

17 pages, 1 figure; article prepared for Symmetry, Special Issue "Advances in Theoretical High Energy Physics - Solving Quantum Field Theory"

References in corpus (14)

• Low-Energy Behavior of Gluons and Gravitons from Gauge Invariance
• On Loop Corrections to Subleading Soft Behavior of Gluons and Gravitons
• Loop Corrections to Soft Theorems in Gauge Theories and Gravity
• Subleading soft theorem in arbitrary dimension from scattering equations
• Constraining subleading soft gluon and graviton theorems
• Diagrammatic insights into next-to-soft corrections
• Next to subleading soft-graviton theorem in arbitrary dimensions
• Sub-subleading Soft Graviton Theorem in Generic Theories of Quantum Gravity
• Conformal Invariance of the Subleading Soft Theorem in Gauge Theory
• The Double Copy Structure of Soft Gravitons
• Soft behavior of a closed massless state in superstring and universality in the soft behavior of the dilaton
• Double-soft behavior of the dilaton of spontaneously broken conformal invariance
• Note on Soft Graviton theorem by KLT Relation
• The B-field soft theorem and its unification with the graviton and dilaton