Universal Nonminimal Coupling-to-Starobinsky Matching and a Single-Field Attractor
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866914223724953600 |
|---|---|
| author | Arapoğlu, A. Savaş Çağan, Sermet Guleryuz, Omer Senisik, Cemal Berfu |
| author_facet | Arapoğlu, A. Savaş Çağan, Sermet Guleryuz, Omer Senisik, Cemal Berfu |
| contents | We establish an off-shell commutativity theorem in 4D parity-even quadratic gravity that the Hubbard-Stratonovich/Legendre lifts, algebraic elimination of auxiliaries, including the torsionless Palatini connection, and Jordan-Einstein Weyl rescalings commute at the action level up to boundary terms. This yields a frame-independent characterization of the propagating degrees of freedom and isolates a universal scalaron EFT in the metric branch, while clarifying the algebraic nature of the Palatini $f(R)$ scalar. We obtain, as a result, a frame-universal matching from the generic nonminimal couplings to a positive $R^2$ sector and a quantitative single-field attractor bound, enhanced by a $1/ΔN$ selection term, providing sharp and falsifiable CMB targets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_23401 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Universal Nonminimal Coupling-to-Starobinsky Matching and a Single-Field Attractor Arapoğlu, A. Savaş Çağan, Sermet Guleryuz, Omer Senisik, Cemal Berfu High Energy Physics - Theory General Relativity and Quantum Cosmology We establish an off-shell commutativity theorem in 4D parity-even quadratic gravity that the Hubbard-Stratonovich/Legendre lifts, algebraic elimination of auxiliaries, including the torsionless Palatini connection, and Jordan-Einstein Weyl rescalings commute at the action level up to boundary terms. This yields a frame-independent characterization of the propagating degrees of freedom and isolates a universal scalaron EFT in the metric branch, while clarifying the algebraic nature of the Palatini $f(R)$ scalar. We obtain, as a result, a frame-universal matching from the generic nonminimal couplings to a positive $R^2$ sector and a quantitative single-field attractor bound, enhanced by a $1/ΔN$ selection term, providing sharp and falsifiable CMB targets. |
| title | Universal Nonminimal Coupling-to-Starobinsky Matching and a Single-Field Attractor |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2512.23401 |