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Is Cosmic Speed-Up Due to New Gravitational Physics?

- S. Carroll, V. Duvvuri, M. Trodden, M. Turner
- Physics
- 22 June 2003

We show that cosmic acceleration can arise due to very tiny corrections to the usual gravitational action of general relativity, of the form ${R}^{\ensuremath{-}n}$ with $ng0.$ This model eliminates… Expand

Beyond the Cosmological Standard Model

- A. Joyce, B. Jain, J. Khoury, M. Trodden
- Physics
- 30 June 2014

After a decade and a half of research motivated by the accelerating universe, theory and experiment have a reached a certain level of maturity. The development of theoretical models beyond \Lambda,… Expand

Cosmology of generalized modified gravity models

- S. Carroll, A. D. Felice, V. Duvvuri, D. Easson, M. Trodden, M. Turner
- Physics
- 1 October 2004

We consider general curvature-invariant modifications of the Einstein-Hilbert action that become important only in regions of extremely low space-time curvature. We investigate the far future… Expand

Electroweak Baryogenesis

- M. Trodden
- Physics
- 27 March 1998

We demonstrate the viability of electroweak baryogenesis scenarios in which the necessary departure from equilibrium is realized by the evolution of a network of topological defects. We consider… Expand

Galileons as Wess-Zumino terms

- Garrett Goon, Kurt Hinterbichler, A. Joyce, M. Trodden
- Physics, Mathematics
- 14 March 2012

A bstractWe show that the galileons can be thought of as Wess-Zumino terms for the spontaneous breaking of space-time symmetries. Wess-Zumino terms are terms which are not captured by the coset… Expand

Symmetries for Galileons and DBI scalars on curved space

- Garrett Goon, Kurt Hinterbichler, M. Trodden
- Physics
- 29 March 2011

We introduce a general class of four-dimensional effective field theories which include curved space Galileons and DBI theories possessing nonlinear shift-like symmetries. These effective theories… Expand

Multifield Galileons and higher codimension branes

- Kurt Hinterbichler, M. Trodden, D. Wesley
- Physics
- 7 August 2010

In the decoupling limit, the Dvali-Gabadadze-Porrati model reduces to the theory of a scalar field $\ensuremath{\pi}$, with interactions including a specific cubic self-interaction---the Galileon… Expand

Constraining Interactions in Cosmology's Dark Sector

- R. Bean, E. Flanagan, I. László, M. Trodden
- Physics
- 7 August 2008

We consider the cosmological constraints on theories in which there exists a nontrivial coupling between the dark matter sector and the sector responsible for the acceleration of the universe, in… Expand

Can the dark energy equation - of - state parameter w be less than -1?

- S. Carroll, M. Hoffman, M. Trodden
- Physics
- 14 January 2003

Models of dark energy are conveniently characterized by the equation-of-state parameter $w=p/\ensuremath{\rho},$ where $\ensuremath{\rho}$ is the energy density and p is the pressure. Imposing the… Expand

The classical double copy in maximally symmetric spacetimes

- Mariana Carrillo-González, R. Penco, M. Trodden
- Physics
- 3 November 2017

A bstractThe classical double copy procedure relates classical asymptotically-flat gravitational field solutions to Yang-Mills and scalar field solutions living in Minkowski space. In this paper we… Expand

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