303 citations · 2k across the 35 of their papers we have counts for
7 papers · 1 filter
Model selection as a science driver for dark energy surveys
Pia Mukherjee, David Parkinson, Pier Stefano Corasaniti +2
A key science goal of upcoming dark energy surveys is to seek time evolution of the dark energy. This problem is one of {\em model selection}, where the aim is to differentiate bet…
A Nested Sampling Algorithm for Cosmological Model Selection
Pia Mukherjee, David Parkinson, Andrew R. Liddle
The abundance of new cosmological data becoming available means that a wider range of cosmological models are testable than ever before. However, an important distinction must be m…
Dynamics of assisted quintessence
Soo A Kim, Andrew R Liddle, Shinji Tsujikawa
We explore the dynamics of assisted quintessence, where more than one scalar field is present with the same potential. For potentials with tracking solutions, the fields naturally…
Direct reconstruction of the quintessence potential
Martin Sahlén, Andrew R. Liddle, David Parkinson
We describe an algorithm which directly determines the quintessence potential from observational data, without using an equation of state parametrisation. The strategy is to numeri…
Flow equations in generalized braneworld scenarios
Gianluca Calcagni, Andrew R. Liddle, Erandy Ramirez
We discuss the flow equations in the context of general braneworld cosmologies with a modified Friedmann equation, for either an ordinary scalar field or a Dirac-Born-Infeld tachyo…
Stochastic approaches to inflation model building
Erandy Ramirez, Andrew R Liddle
While inflation gives an appealing explanation of observed cosmological data, there are a wide range of different inflation models, providing differing predictions for the initial…