Outputs (3)

Constraining disformally coupled scalar fields (2014)
Journal Article
Brax, P., & Burrage, C. (2014). Constraining disformally coupled scalar fields. Physical Review D, D90(10), Article 104009. https://doi.org/10.1103/PhysRevD.90.104009

Light scalar fields can naturally couple disformally to matter fields. Static, nonrelativistic sources do not generate a classical field profile for a disformally coupled scalar, and so such scalars are free from the constraints on the existence of f... Read More about Constraining disformally coupled scalar fields.

Screening of scalar fields in Dirac-Born-Infeld theory (2014)
Journal Article
Burrage, C., & Khoury, J. (2014). Screening of scalar fields in Dirac-Born-Infeld theory. Physical Review D, D90(2), Article 024001. https://doi.org/10.1103/PhysRevD.90.024001

We study a new screening mechanism which is present in Dirac-Born-Infeld (DBI)-like theories. A scalar field with a DBI-like Lagrangian is minimally coupled to matter. In the vicinity of sufficiently dense sources, nonlinearities in the scalar domina... Read More about Screening of scalar fields in Dirac-Born-Infeld theory.

Chameleons in the early universe: kicks, rebounds, and particle production (2014)
Journal Article
Erickcek, A. L., Barnaby, N., Burrage, C., & Huang, Z. (2014). Chameleons in the early universe: kicks, rebounds, and particle production. Physical Review D, D89(8), Article 084074. https://doi.org/10.1103/PhysRevD.89.084074

Chameleon gravity is a scalar-tensor theory that includes a nonminimal coupling between the scalar field and the matter fields and yet mimics general relativity in the Solar System. The scalar degree of freedom is hidden in high-density environments... Read More about Chameleons in the early universe: kicks, rebounds, and particle production.