DOAJ Open Access 2023

Soft theorems for boosts and other time symmetries

Lam Hui Austin Joyce Ilia Komissarov Klaas Parmentier Luca Santoni +1 lainnya

Abstrak

Abstract We derive soft theorems for theories in which time symmetries — symmetries that involve the transformation of time, an example of which are Lorentz boosts — are spontaneously broken. The soft theorems involve unequal-time correlation functions with the insertion of a soft Goldstone in the far past. Explicit checks are provided for several examples, including the effective theory of a relativistic superfluid and the effective field theory of inflation. We discuss how in certain cases these unequal-time identities capture information at the level of observables that cannot be seen purely in terms of equal-time correlators of the field alone. We also discuss when it is possible to phrase these soft theorems as identities involving equal-time correlators.

Topik & Kata Kunci

Nuclear and particle physics. Atomic energy. Radioactivity

Penulis (6)

Lam Hui

Austin Joyce

Ilia Komissarov

Klaas Parmentier

Luca Santoni

Sam S. C. Wong

Format Sitasi

APA MLA BibTeX

Hui, L., Joyce, A., Komissarov, I., Parmentier, K., Santoni, L., Wong, S.S.C. (2023). Soft theorems for boosts and other time symmetries. https://doi.org/10.1007/JHEP02(2023)123

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.1007/JHEP02(2023)123
Akses: Open Access ✓