219 citations · 379 across the 9 of their papers we have counts for
9 papers
On Coupling NEC-Violating Matter to Gravity
Saugata Chatterjee, Maulik Parikh, Jan Pieter van der Schaar
We show that effective theories of matter that classically violate the null energy condition cannot be minimally coupled to Einstein gravity without being inconsistent with both st…
Vacua and correlators in hyperbolic de Sitter space
Fotios V. Dimitrakopoulos, Laurens Kabir, Benjamin Mosk +2
We study the power - and bi -spectrum of vacuum fluctuations in a hyperbolic section of de Sitter space, comparing two states of physical interest: the Bunch-Davies and hyperbolic…
Signatures of Initial State Modifications on Bispectrum Statistics
Pieter Daniel Meerburg, Jan Pieter van der Schaar, Pier Stefano Corasaniti
Modifications of the initial-state of the inflaton field can induce a departure from Gaussianity and leave a testable imprint on the higher order correlations of the CMB and large…
Not One Bit of de Sitter Information
Maulik K. Parikh, Jan Pieter van der Schaar
We formulate the information paradox in de Sitter space in terms of the no-cloning principle of quantum mechanics. We show that energy conservation puts an upper bound on the maxim…
Universal Correction to the Inflationary Vacuum
Brian Greene, Maulik Parikh, Jan Pieter van der Schaar
The Bunch-Davies state appears precisely thermal to a free-falling observer in de Sitter space. However, precise thermality is unphysical because it violates energy conservation. I…
Extracting New Physics from the CMB
B. Greene, K. Schalm, G. Shiu +1
We review how initial state effects generically yield an oscillatory component in the primordial power spectrum of inflationary density perturbations. These oscillatory corrections…