Adam J. Christopherson

activity

20082017

most citedThe non-adiabatic pressure in general scalar field systems

95 citations · 405 across the 26 of their papers we have counts for

collaborators

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3 papers · 1 filter

gr-qc2016

Relating metric and covariant perturbation theories in $f (R)$ gravity

Adam J. Christopherson

Modified theories of gravity have been invoked recently as an alternative to dark energy, in an attempt to explain the apparent accelerated expansion of the universe at the present…

gr-qc2015★ 13 cited

Second-order cosmological perturbation theory and initial conditions for $N$ -body simulations

Adam J. Christopherson, Juan Carlos Hidalgo, Cornelius Rampf +1

We use gauge-invariant cosmological perturbation theory to calculate the displacement field that sets the initial conditions for $N$ -body simulations. Using first and second-order…

gr-qc2010★ 32 cited

Can cosmological perturbations produce early universe vorticity?

Adam J. Christopherson, Karim A. Malik

In this special issue article, based on the talk with the same title in session B5 (Theoretical and Mathematical Cosmology) at GR19, we review the case of vorticity generation in c…

Relating metric and covariant perturbation theories in f(R) gravity

Second-order cosmological perturbation theory and initial conditions for N-body simulations

Can cosmological perturbations produce early universe vorticity?

Relating metric and covariant perturbation theories in $f (R)$ gravity

Second-order cosmological perturbation theory and initial conditions for $N$ -body simulations