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9 papers · 2 filters
The Classical Double Copy of a Point Charge
Kwangeon Kim, Kanghoon Lee, Ricardo Monteiro +2
The classical double copy relates solutions to the equations of motion in gauge theory and in gravity. In this paper, we present two double-copy formalisms for relating the Coulomb…
Trans-Planckian censorship and single-field inflaton potential
Kenji Kadota, Chang Sub Shin, Takahiro Terada +1
It was recently proposed that a field theory cannot be consistent with quantum gravity if it allows a mode shorter than the Planck length to exit the Hubble horizon. This is called…
Enlarging the Space of Viable Inflation Models: A Slingshot Mechanism
Keith R. Dienes, Jeff Kost, Brooks Thomas
The viability of a given model for inflation is determined not only by the form of the inflaton potential, but also by the initial inflaton field configuration. In many models, fie…
Hidden symmetries of two-field cosmological models
Lilia Anguelova, Elena Mirela Babalic, Calin Iuliu Lazaroiu
We determine the most general time-independent Noether symmetries of two-field cosmological models with rotationally-invariant scalar manifold metrics. In particular, we show that…
From minimal gravity to open intersection theory
Alexander Alexandrov, Hisayoshi Muraki, Chaiho Rim
We investigated the relation between the two-dimensional minimal gravity (Lee-Yang series) with boundaries and open intersection theory. It is noted that the minimal gravity with b…
Heterotic Kerr-Schild Double Field Theory and Classical Double Copy
Wonyoung Cho, Kanghoon Lee
We discuss the generalization of the Kerr-Schild (KS) formalism for general relativity and double field theory (DFT) to the heterotic DFT and supergravity. We first introduce a het…