1k citations · 3.8k across the 55 of their papers we have counts for
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Fast Analytic Computation of Cosmic String Power Spectra
Anastasios Avgoustidis, Edmund J. Copeland, Adam Moss +1
We present analytic expressions for the cosmic string unequal time correlator (UETC) in the context of the Unconnected Segment Model (USM). This eliminates the need to simulate the…
Cosmology and fundamental physics with the Euclid satellite
Luca Amendola, Stephen Appleby, David Bacon +60
Euclid is a European Space Agency medium class mission selected for launch in 2019 within the Cosmic Vision 2015-2025 programme. The main goal of Euclid is to understand the origin…
Gravitational shocks as a key ingredient of Gamma-Ray Bursts
Anastasios Avgoustidis, Raul Jimenez, Luis Alvarez-Gaume +1
We identify a novel physical mechanism that may be responsible for energy release in -ray bursts. Radial perturbations in the neutron core, induced by its collision with collaps…
Cosmic superstring trajectories in warped compactifications
Anastasios Avgoustidis, Sarah Chadburn, Ruth Gregory
We explore the generic motion of cosmic (super)strings when the internal compact dimensions are warped, using the Klebanov-Strassler solution as a prototypical throat geometry. We…
Decoupling Survives Inflation: A Critical Look at Effective Field Theory Violations During Inflation
Anastasios Avgoustidis, Sera Cremonini, Anne-Christine Davis +3
We investigate the validity of effective field theory methods and the decoupling of heavy fields during inflation. Considering models of inflation in which the inflaton is coupled…
Cosmic string evolution with a conserved charge
M. F. Oliveira, A. Avgoustidis, C. J. A. P. Martins
Cosmic strings with degrees of freedom beyond the standard Abrikosov-Nielsen-Olesen or Nambu-Goto strings are ubiquitous in field theory as well as in models with extra dimensions,…