Počet záznamů: 1  

Cosmological scattering equations at tree-level and one-loop

  1. 1.
    0562140 - FZÚ 2023 RIV US eng J - Článek v odborném periodiku
    Gomez, H. - Lipinski Jusinskas, Renann - Lipstein, A.
    Cosmological scattering equations at tree-level and one-loop.
    Journal of High Energy Physics. Roč. 2022, č. 7 (2022), č. článku 004. ISSN 1029-8479. E-ISSN 1029-8479
    Grant CEP: GA ČR GJ19-06342Y
    Institucionální podpora: RVO:68378271
    Klíčová slova: scattering equations * cosmological models * inflation
    Obor OECD: Particles and field physics
    Impakt faktor: 5.4, rok: 2022
    Způsob publikování: Open access

    We recently proposed a formula for tree-level n-point correlators of massive quartic theory in de Sitter momentum space which consists of an integral over n punctures on the Riemann sphere and differential operators in the future boundary dubbed the cosmological scattering equations. In this work we provide further details of these calculations and present an alternative formulation based on a double cover of the Riemann sphere. This framework can be used to derive simple graphical rules for evaluating the integrals more efficiently. We check its validity up to eight points and sketch the derivation of n-point correlators. Finally, we propose a similar formula for 1-loop n-point correlators in terms of an integral over (n + 2) punctures on the Riemann sphere. The 1-loop formula holds for small masses in de Sitter space and arbitrary masses satisfying the Breitenlohner-Freedman bound after Wick-rotating to Anti-de Sitter space.

    Trvalý link: https://hdl.handle.net/11104/0334556

     
    Název souboruStaženoVelikostKomentářVerzePřístup
    0562140.pdf11 MBSCOAPVydavatelský postprintpovolen
     
Počet záznamů: 1  

  Tyto stránky využívají soubory cookies, které usnadňují jejich prohlížení. Další informace o tom jak používáme cookies.