Work

Time-dependent solutions of biadjoint scalar field theories

Year: 2025

Type: article

Abstract: Biadjoint scalar field theories appear in the study of scattering amplitudes and classical solutions in gauge, gravity and related theories. In this paper, we present new exact solutions of biadjoint scalar field theory, showing that time-dependent solutions are possible and analytically tractable. We generalise the theory to include mass and / or quartic terms, and also a coupling to a constant current. This allows for more exact solutions, which make contact with previous soliton literature. We also find bounded solutions, in contrast to all known previous examples. Our results may be useful for the study of non-perturbative aspects of the double copy between gauge theories and gravity. We also speculate as to their possible practical applications.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2025.139517

Authors: Kymani Armstrong-Williams, Chris D. White

Institution: Queen Mary University of London

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: Engineering and Physical Sciences Research Council, Science and Technology Facilities Council

Award: String Theory, Gauge Theory and Duality