795 citations · 5.9k across the 78 of their papers we have counts for
78 papers
Inflationary gravitational wave background as a tail effect
Niko Jokela, K. Kajantie, M. Laine +2
The free propagator of a massless mode in an expanding universe can be written as a sum of two terms, a lightcone and a tail part. The latter describes a subluminal (time-like) sig…
Gravitational wave memory in conformally flat spacetimes
Niko Jokela, K. Kajantie, Miika Sarkkinen
We study the gravitational wave memory effect in spacetimes related to flat space by a conformal transformation. The discussion is general but the gravitational wave length scale i…
Gravitational wave memory and its tail in cosmology
Niko Jokela, K. Kajantie, Miika Sarkkinen
We study gravitational wave memory effect in the FRW cosmological model with matter and cosmological constant. Since the background is curved, gravitational radiation develops a ta…
Memory effect in Yang-Mills theory with an axion
Niko Jokela, K. Kajantie, Miika Sarkkinen
We study the empirical realization of the memory effect in Yang-Mills theory with an axion-like particle, especially in view of the classical vs. quantum nature of the theory. We s…
Gluon Radiation from a classical point particle II: dense gluon fields
K. Kajantie, Larry D. McLerran, Risto Paatelainen
The goal of this paper is to extend the results of Ref. [1], where formulae were derived for gluonic radiation for a high energy nucleus colliding with a classical colored particle…
Memory effect in Yang-Mills theory
Niko Jokela, K. Kajantie, Miika Sarkkinen
We study the empirical realisation of the memory effect in Yang-Mills theory, especially in view of the classical vs. quantum nature of the theory. Gauge invariant analysis of memo…