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7 papers · 1 filter
A Well-Posed UV Completion for Simulating Scalar Galileons
Mary Gerhardinger, John T. Giblin, Andrew J. Tolley +1
The Galileon scalar field theory is a prototypical example of an effective field theory that exhibits the Vainshtein screening mechanism, which is incorporated into many extensions…
Scalar Gravitational Radiation from Binaries: Vainshtein Mechanism in Time-dependent Systems
Furqan Dar, Claudia de Rham, J. Tate Deskins +2
We develop a full four-dimensional numerical code to study scalar gravitational radiation emitted from binary systems and probe the Vainshtein mechanism in situations that break th…
Was the Universe Actually Radiation Dominated Prior to Nucleosynthesis?
John T. Giblin, Gordon Kane, Eva Nesbit +2
Maybe not. String theory approaches to both beyond the Standard Model and Inflationary model building generically predict the existence of scalars (moduli) that are light compared…
Toward an Effective Field Theory Approach to Reheating
Ogan Ozsoy, John T. Giblin, Eva Nesbit +2
We investigate whether Effective Field Theory (EFT) approaches, which have been useful in examining inflation and dark energy, can also be used to establish a systematic approach t…
Vacuum Bubbles in the Presence of a Relativistic Fluid
John T. Giblin, James B. Mertens
First order phase transitions are characterized by the nucleation and evolution of bubbles. The dynamics of cosmological vacuum bubbles, where the order parameter is independent of…
How to Run Through Walls: Dynamics of Bubble and Soliton Collisions
John T. Giblin, Lam Hui, Eugene A. Lim +1
It has recently been shown in high resolution numerical simulations that relativistic collisions of bubbles in the context of a multi-vacua potential may lead to the creation of bu…