A Scale-Dependent Power Asymmetry from Isocurvature Perturbations (2009)
Erickcek, Adrienne L., Hirata, Christopher M., Kamionkowski, Marc
If the hemispherical power asymmetry observed in the cosmic microwave background (CMB) on large angular scales is attributable to a superhorizon curvaton fluctuation, then the simplest model predicts...
The consequences of modifying fundamental cosmological theories (2009)
In this work, we examine alternatives to three fundamental cosmological theories: extended Press-Schechter merger theory, general relativity, and single-field inflation, and derive their...
The consequences of modifying fundamental cosmological theories (2009)
In this work, we examine alternatives to three fundamental cosmological theories: extended Press-Schechter merger theory, general relativity, and single-field inflation, and derive their...
A hemispherical power asymmetry from inflation (2008)
Erickcek, Adrienne L., Kamionkowski, Marc, Carroll, Sean M.
Measurements of cosmic microwave background temperature fluctuations by the Wilkinson Microwave Anisotropy Probe indicate that the fluctuation amplitude in one half of the sky differs from the...
Superhorizon perturbations and the cosmic microwave background (2008)
Erickcek, Adrienne L., Carroll, Sean M., Kamionkowski, Marc
Superhorizon perturbations induce large-scale temperature anisotropies in the cosmic microwave background (CMB) via the Grishchuk-Zel'dovich effect. We analyze the CMB temperature anisotropies...
Superhorizon Perturbations and the Cosmic Microwave Background (2008)
Erickcek, Adrienne L., Carroll, Sean M., Kamionkowski, Marc
Superhorizon perturbations induce large-scale temperature anisotropies in the cosmic microwave background (CMB) via the Grishchuk-Zel'dovich effect. We analyze the CMB temperature anisotropies...
A Hemispherical Power Asymmetry from Inflation (2008)
Erickcek, Adrienne L., Kamionkowski, Marc, Carroll, Sean M.
Measurements of CMB temperature fluctuations by the Wilkinson Microwave Anisotropy Probe (WMAP) indicate that the fluctuation amplitude in one half of the sky differs from the amplitude in the other...
Effects of Chern-Simons gravity on bodies orbiting the Earth (2008)
Smith, Tristan L., Erickcek, Adrienne L., Caldwell, Robert R., Kamionkowski, Marc
One of the possible low-energy consequences of string theory is the addition of a Chern-Simons term to the standard Einstein-Hilbert action of general relativity. It can be argued that the...
Erickcek, Adrienne L., Steinhardt, Paul J., McCammon, Dan, McGuire, Patrick C.
Although the rocket-based x-ray quantum calorimetry (XQC) experiment was designed for x-ray spectroscopy, the minimal shielding of its calorimeters, its low atmospheric overburden, and its...
The effects of Chern-Simons gravity on bodies orbiting the Earth (2007)
Smith, Tristan L., Erickcek, Adrienne L., Caldwell, Robert R., Kamionkowski, Marc
One of the possible low-energy consequences of string theory is the addition of a Chern-Simons term to the standard Einstein-Hilbert action of general relativity. It can be argued that the...
Solar System constraints to general f(R) gravity (2007)
Chiba, Takeshi, Smith, Tristan L., Erickcek, Adrienne L.
It has been proposed that cosmic acceleration or inflation can be driven by replacing the Einstein-Hilbert action of general relativity with a function f(R) of the Ricci scalar R. Such f(R) gravity...
Erickcek, Adrienne L., Steinhardt, Paul J., McCammon, Dan, McGuire, Patrick C.
Although the rocket-based X-ray Quantum Calorimetry (XQC) experiment was designed for X-ray spectroscopy, the minimal shielding of its calorimeters, its low atmospheric overburden, and its...
Solar system tests do rule out 1/R gravity (2006)
Erickcek, Adrienne L., Smith, Tristan L., Kamionkowski, Marc
Shortly after the addition of a 1/R term to the Einstein-Hilbert action was proposed as a solution to the cosmic-acceleration puzzle, Chiba showed that such a theory violates Solar System tests of...
Solar System constraints to general f(R) gravity (2006)
Chiba, Takeshi, Smith, Tristan L., Erickcek, Adrienne L.
It has been proposed that cosmic acceleration or inflation can be driven by replacing the Einstein-Hilbert action of general relativity with a function f(R) of the Ricci scalar R. Such f(R) gravity...
Solar System tests DO rule out 1/R gravity (2006)
Erickcek, Adrienne L., Smith, Tristan L., Kamionkowski, Marc
Shortly after the addition of a 1/R term to the Einstein-Hilbert action was proposed as a solution to the cosmic-acceleration puzzle, Chiba showed that such a theory violates Solar System tests of...
Supermassive Black Hole Merger Rates: Uncertainties from Halo Merger Theory (2006)
Erickcek, Adrienne L., Kamionkowski, Marc, Benson, Andrew J.
The merger of two supermassive black holes is expected to produce a gravitational-wave signal detectable by the satellite LISA. The rate of supermassive-black-hole mergers is intimately connected to...
3D simulations of linearized scalar fields in Kerr spacetime (2004)
Scheel, Mark A., Erickcek, Adrienne L., Burko, Lior M., Kidder, Lawrence E., Pfeiffer, Harald P., Teukolsky, Saul A.
We investigate the behavior of a dynamical scalar field on a fixed Kerr background in Kerr-Schild coordinates using a (3+1)-dimensional spectral evolution code, and we measure the power-law tail...
3D simulations of linearized scalar fields in Kerr spacetime (2003)
Scheel, Mark A., Erickcek, Adrienne L., Burko, Lior M., Kidder, Lawrence E., Pfeiffer, Harald P., Teukolsky, Saul A.
We investigate the behavior of a dynamical scalar field on a fixed Kerr background in Kerr-Schild coordinates using a 3+1 dimensional spectral evolution code, and we measure the power-law tail decay...