Large logarithms from quantum gravitational corrections to a massless, minimally coupled scalar on de Sitter

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00567179" target="_blank" >RIV/68378271:_____/22:00567179 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0338460" target="_blank" >https://hdl.handle.net/11104/0338460</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP03(2022)088" target="_blank" >10.1007/JHEP03(2022)088</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Large logarithms from quantum gravitational corrections to a massless, minimally coupled scalar on de Sitter

Popis výsledku v původním jazyce

We consider single graviton loop corrections to the effective field equation of a massless, minimally coupled scalar on de Sitter background in the simplest gauge. We find a large temporal logarithm in the approach to freeze-in at late times, but no correction to the feeze-in amplitude. We also find a large spatial logarithm (at large distances) in the scalar potential generated by a point source, which can be explained using the renormalization group with one of the higher derivative counterterms regarded as a curvature-dependent field strength renormalization. We discuss how these results set the stage for a project to purge gauge dependence by including quantum gravitational corrections to the source which disturbs the effective field and to the observer who measures it.

Název v anglickém jazyce

Large logarithms from quantum gravitational corrections to a massless, minimally coupled scalar on de Sitter

Popis výsledku anglicky

We consider single graviton loop corrections to the effective field equation of a massless, minimally coupled scalar on de Sitter background in the simplest gauge. We find a large temporal logarithm in the approach to freeze-in at late times, but no correction to the feeze-in amplitude. We also find a large spatial logarithm (at large distances) in the scalar potential generated by a point source, which can be explained using the renormalization group with one of the higher derivative counterterms regarded as a curvature-dependent field strength renormalization. We discuss how these results set the stage for a project to purge gauge dependence by including quantum gravitational corrections to the source which disturbs the effective field and to the observer who measures it.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/GA20-28525S" target="_blank" >GA20-28525S: Silná gravitace jako mikroskop pro temný vesmír</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Svazek periodika

2022

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

23

Strana od-do

088

Kód UT WoS článku

000769456600007

EID výsledku v databázi Scopus

2-s2.0-85126267859