260 citations · 1.6k across the 32 of their papers we have counts for
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gr-qc2014★ 68 cited
Preferred instantaneous vacuum for linear scalar fields in cosmological space-times
Ivan Agullo, William Nelson, Abhay Ashtekar
We discuss the problem of defining a preferred vacuum state at a given time for a quantized scalar field in Friedmann, Lemaître, Robertson Walker (FLRW) space-time. Among the infin…
hep-th2014★ 8 cited
Cusps and pseudo-cusps in strings with Y-junctions
Thomas Elghozi, William Nelson, Mairi Sakellariadou
We study the occurrence of cuspy events on a light string stretched between two Y-junctions with fixed heavy strings. We first present an analytic study and give a solid criterion…