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

Syksy Räsänen, Yosef Verbin

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

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.

اللغة الأصليةالإنجليزيّة
دوريةOpen Journal of Astrophysics
مستوى الصوت6
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 2023

ملاحظة ببليوغرافية

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

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