One-loop corrections to the primordial tensor spectrum from massless isocurvature fields

Abstract We study one-loop corrections to the two-point correlation function of tensor perturbations in primordial cosmology induced by massless spectator matter fields. Using the Schwinger-Keldysh formalism in cosmological perturbation theory, we employ dimensional regularization and cutoff regular...

Full description

Bibliographic Details
Main Author:	Hai Siong Tan
Format:	Article
Language:	English
Published:	SpringerOpen 2020-10-01
Series:	Journal of High Energy Physics
Subjects:	Classical Theories of Gravity Cosmology of Theories beyond the SM Models of Quantum Gravity
Online Access:	http://link.springer.com/article/10.1007/JHEP10(2020)186

id	doaj-96b913dafaa44d7d83a80778cb8c968e
record_format	Article
spelling	doaj-96b913dafaa44d7d83a80778cb8c968e2020-11-25T04:01:46ZengSpringerOpenJournal of High Energy Physics1029-84792020-10-0120201012410.1007/JHEP10(2020)186One-loop corrections to the primordial tensor spectrum from massless isocurvature fieldsHai Siong Tan0Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological UniversityAbstract We study one-loop corrections to the two-point correlation function of tensor perturbations in primordial cosmology induced by massless spectator matter fields. Using the Schwinger-Keldysh formalism in cosmological perturbation theory, we employ dimensional regularization and cutoff regularization to study the finite quantum corrections at one-loop arising from isocurvature fields of the massless scalar, fermion and abelian gauge field which are freely propagating on the FRW spacetime. For all cases, we find a logarithmic running of the form C q 3 H 4 M p 4 $$ \frac{C}{q^3}\frac{H^4}{M_p^4} $$ log H μ $$ \left(\frac{H}{\mu}\right) $$ where C is a negative constant related to the beta function, H is the Hubble parameter at horizon exit and μ is the renormalization scale.http://link.springer.com/article/10.1007/JHEP10(2020)186Classical Theories of GravityCosmology of Theories beyond the SMModels of Quantum Gravity
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Hai Siong Tan
spellingShingle	Hai Siong Tan One-loop corrections to the primordial tensor spectrum from massless isocurvature fields Journal of High Energy Physics Classical Theories of Gravity Cosmology of Theories beyond the SM Models of Quantum Gravity
author_facet	Hai Siong Tan
author_sort	Hai Siong Tan
title	One-loop corrections to the primordial tensor spectrum from massless isocurvature fields
title_short	One-loop corrections to the primordial tensor spectrum from massless isocurvature fields
title_full	One-loop corrections to the primordial tensor spectrum from massless isocurvature fields
title_fullStr	One-loop corrections to the primordial tensor spectrum from massless isocurvature fields
title_full_unstemmed	One-loop corrections to the primordial tensor spectrum from massless isocurvature fields
title_sort	one-loop corrections to the primordial tensor spectrum from massless isocurvature fields
publisher	SpringerOpen
series	Journal of High Energy Physics
issn	1029-8479
publishDate	2020-10-01
description	Abstract We study one-loop corrections to the two-point correlation function of tensor perturbations in primordial cosmology induced by massless spectator matter fields. Using the Schwinger-Keldysh formalism in cosmological perturbation theory, we employ dimensional regularization and cutoff regularization to study the finite quantum corrections at one-loop arising from isocurvature fields of the massless scalar, fermion and abelian gauge field which are freely propagating on the FRW spacetime. For all cases, we find a logarithmic running of the form C q 3 H 4 M p 4 $$ \frac{C}{q^3}\frac{H^4}{M_p^4} $$ log H μ $$ \left(\frac{H}{\mu}\right) $$ where C is a negative constant related to the beta function, H is the Hubble parameter at horizon exit and μ is the renormalization scale.
topic	Classical Theories of Gravity Cosmology of Theories beyond the SM Models of Quantum Gravity
url	http://link.springer.com/article/10.1007/JHEP10(2020)186
work_keys_str_mv	AT haisiongtan oneloopcorrectionstotheprimordialtensorspectrumfrommasslessisocurvaturefields
_version_	1724445223454507008

One-loop corrections to the primordial tensor spectrum from massless isocurvature fields

Similar Items