72 citations · 234 across the 18 of their papers we have counts for
18 papers
New Massless Spectra from Cosmic String Cusps
Amelia Drew, Ivan Rybak
In the standard picture of cosmic strings, cusps are generic features of Nambu-Goto loops where the string momentarily reaches the speed of light. They have a characteristic sharp…
Testing classicality of gravity by gravitation decoherence
V. P. Stefanov, D. S. Mogilevtsev, I. Y. Rybak +1
Here we discuss an influence of an external weak gravitational field on the gravitational self-decoherence effect with help of the stochastic extension of regularized Shrödinger-Ne…
Stochastic Gravitational Wave Background from Chiral Superconducting Cosmic Strings
I. Yu. Rybak, L. Sousa
We investigate the emission of vector radiation by superconducting cosmic string loops, deriving general relations to characterize the vector radiation emission efficiency, and stu…
Gravitational waves from cosmic strings in LISA: reconstruction pipeline and physics interpretation
Jose J. Blanco-Pillado, Yanou Cui, Sachiko Kuroyanagi +6
We initiate the LISA template databank for stochastic gravitational wave backgrounds sourced by cosmic strings. We include two templates, an analytical template, which enables more…
Cosmic Microwave Background Signatures from Current-carrying Cosmic Strings
I. Yu. Rybak, C. J. A. P. Martins, Patrick Peter +1
We continue our studies of the evolution and cosmological consequences of current-carrying cosmic string networks, described by a charge-velocity-dependent one scale (CVOS) model.…
Decay of Nambu-Goto Cosmic String Loops via Coupling to a Massive Kalb-Ramond Field
I. Yu. Rybak
We study the dynamics of Nambu-Goto cosmic string loops coupled to a massive Kalb-Ramond field. This coupling provides a framework for describing the interaction between the cosmic…
Cosmological evolution of Witten superconducting string networks
I. Yu. Rybak, C. J. A. P. Martins, Patrick Peter +1
We consider the evolution of current-carrying cosmic string networks described by the charge-velocity-dependent one scale (CVOS) model beyond the linear equation of state regime, s…
Cosmic Microwave Background anisotropies generated by cosmic strings with small-scale structure
Rodrigo P. Silva, Lara Sousa, Ivan Yu. Rybak
We study the impact of kinks on the cosmic microwave background (CMB) anisotropies generated by cosmic string networks. To do so, we extend the Unconnected Segment Model to describ…
Emission of gravitational waves by superconducting cosmic strings
I. Yu. Rybak, L. Sousa
We study the gravitational radiation emission efficiency of superconducting cosmic strings. We demonstrate, by using a solvable model of transonic strings, that the presence of…
Charge-velocity-dependent one-scale linear model
C. J. A. P. Martins, Patrick Peter, I. Yu. Rybak +1
We apply a recently developed formalism to study the evolution of a current-carrying string network under the simple but generic assumption of a linear equation of state. We demons…
CMB anisotropies generated by cosmic string loops
I. Yu. Rybak, L. Sousa
We investigate the contribution of cosmic string loops to the Cosmic Microwave Background (CMB) anisotropies. This is done by extending the Unconnected Segment Model (USM) to inclu…
Generalised velocity-dependent one-scale model for current-carrying strings
C. J. A. P. Martins, Patrick Peter, I. Yu. Rybak +1
We develop an analytic model to quantitatively describe the evolution of superconducting cosmic string networks. Specifically, we extend the velocity-dependent one-scale (VOS) mode…
Revisit of Y-junctions for strings with currents: transonic elastic case
I. Yu. Rybak
We studied the formation of Y-junctions for transonic elastic strings. In particular, using the gen-eral solution for these strings, which is described by left- and right-moving mo…
Dynamics of junctions and the multi-tension velocity-dependent one-scale model
I. Yu. Rybak, A. Avgoustidis, C. J. A. P. Martins
The dynamics of string junctions and their influence on the evolution of cosmic superstring networks are studied in full detail. We review kinematic constraints for colliding strin…
Collisions of cosmic strings with chiral currents
I. Yu. Rybak, A. Avgoustidis, C. J. A. P. Martins
We present an analytic study of cosmic superconducting chiral string collisions in Minkowski space, applying the kinematic constraints that arise from the relevant generalization o…
Semianalytic calculation of cosmic microwave background anisotropies from wiggly and superconducting cosmic strings
I. Yu. Rybak, A. Avgoustidis, C. J. A. P. Martins
We study how the presence of world-sheet currents affects the evolution of cosmic string networks, and their impact on predictions for the cosmic microwave background (CMB) anisotr…
Stretching and Kibble scaling regimes for Hubble-damped defect networks
C. J. A. P. Martins, I. Yu. Rybak, A. Avgoustidis +1
The cosmological evolution of topological defect networks can broadly be divided into two stages. At early times they are friction-dominated due to particle scattering and therefor…
Extending the velocity-dependent one-scale model for domain walls
C. J. A. P. Martins, I. Yu. Rybak, A. Avgoustidis +1
We report on an extensive study of the evolution of domain wall networks in Friedmann-Lema\^ıtre-Robertson-Walker universes by means of the largest currently available field-theory…