PALATINI FORMULATION FOR GAUGE THEORY: IMPLICATIONS FOR SLOW-ROLL INFLATION

Syksy Räsänen, Yosef Verbin

פרסום מחקרי: פרסום בכתב עתמאמרביקורת עמיתים

תקציר

We consider a formulation of gauge field theory where the gauge field Aα and the field strength Fαβ are independent variables, as in the Palatini formulation of gravity. For the simplest gauge field action, this is known to be equivalent to the usual formulation. We add non-minimal couplings between Fαβ and a scalar field, solve for Fαβ and insert it back into the action. This leads to modified gauge field and scalar field terms. We consider slow-roll inflation and show that because of the modifications to the scalar sector, adding higher order terms to the inflaton potential does not spoil its flatness, unlike in the usual case. Instead it makes the effective potential closer to quadratic.

שפה מקוריתאנגלית
כתב עתOpen Journal of Astrophysics
כרך6
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - 2023

הערה ביבליוגרפית

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© 2023, National University of Ireland Maynooth. All rights reserved.

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