130 citations · 658 across the 29 of their papers we have counts for
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Cosmological Perturbations in Models of Coupled Dark Energy
Sirichai Chongchitnan
Models in which dark energy interacts with dark matter have been proposed in the literature to help explain why dark energy should only come to dominate in recent times. In this pa…
Can we ever distinguish between quintessence and a cosmological constant?
Sirichai Chongchitnan, George Efstathiou
Many ambitious experiments have been proposed to constrain dark energy and detect its evolution. At present, observational constraints are consistent with a cosmological constant a…
Accuracy of slow-roll formulae for inflationary perturbations: implications for primordial black hole formation
Sirichai Chongchitnan, George Efstathiou
We investigate the accuracy of the slow-roll approximation for calculating perturbation spectra generated during inflation. The Hamilton-Jacobi formalism is used to evolve inflatio…
The Search For Primordial Tensor Modes
George Efstathiou, Sirichai Chongchitnan
We review the prospects for detecting tensor modes generated during inflation by CMB polarization experiments and by searching for a stochastic gravitational wave background with l…
Prospects for direct detection of primordial gravitational waves
Sirichai Chongchitnan, George Efstathiou
We study the primordial gravitational wave background produced in models of single field inflation. Using the inflationary flow approach, we investigate the amplitude of gravitatio…
Dynamics of the Inflationary Flow Equations
Sirichai Chongchitnan, George Efstathiou
We present a dynamical analysis of the inflationary flow equations. Our technique uses the Hubble `jerk' parameter as a discriminant of stability of fixed points. The results of th…