BackBrowsing Artículos by Author "López Eiguren, Asier"
Now showing items 1-4 of 4
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Approach to scaling in axion string networks
; Lizarraga Olano, Joanes
; ; Urrestilla Urizabal, Jon (APS, 2021-05-26)
We study the approach to scaling in axion string networks in the radiation era, through measuring the root-mean-square velocity v as well as the scaled mean string separation x. We find good evidence for a fixed point in ... -
Calibrating Analytical Models for Semilocal Strings
(IOP Publishing, 2015)In this work we calibrate two different analytic models of semilocal strings by constraining the values of their free parameters. In order to do so, we use data obtained from the largest and most accurate field theory ... -
Nambu-Goto Dynamics of Field Theory Cosmic String Loops
; ; Lizarraga Olano, Joanes; ; ; Urio Garmendia, Ander ; Urrestilla Urizabal, Jon (IOP Publishing, 2023-05-18)
We perform a detailed comparison of the dynamics of cosmic string loops obtained in cosmological field theory simulations with their expected motion according to the Nambu-Goto action. We demonstrate that these loops follow ... -
Scaling density of axion strings
; Lizarraga Olano, Joanes; ; Urrestilla Urizabal, Jon (APS, 2020-01-16)
In the QCD axion dark matter scenario with postinflationary Peccei-Quinn symmetry breaking, the number density of axions, and hence the dark matter density, depends on the length of string per unit volume at cosmic time ...