All Outputs (4)

Cosmological evolution of semilocal string networks (2019)
Journal Article
Achúcarro, A., Avgoustidis, A., López-Eiguren, A., Martins, C. J. A. P., & Urrestilla, J. (2019). Cosmological evolution of semilocal string networks. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, 377(2161), 1-11. https://doi.org/10.1098/rsta.2019.0004

Semilocal strings—a particular limit of electroweak strings—are an interesting example of a stable non-topological defect whose properties resemble those of their topological cousins, the Abrikosov–Nielsen–Olesen vortices. There is, however, one impo... Read More about Cosmological evolution of semilocal string networks.

Early dark energy constraints on growing neutrino quintessence cosmologies (2019)
Journal Article
Noble Chamings, F., Avgoustidis, A., Copeland, E. J., Green, A. M., & Li, B. (2019). Early dark energy constraints on growing neutrino quintessence cosmologies. Physical Review D, 100(4), https://doi.org/10.1103/physrevd.100.043525

We investigate cosmological models in which dynamical dark energy consists of a scalar field whose present-day value is controlled by a coupling to the neutrino sector. The behavior of the scalar field depends on three functions: a kinetic function,... Read More about Early dark energy constraints on growing neutrino quintessence cosmologies.

Analog cosmology with two-fluid systems in a strong gradient magnetic field (2019)
Journal Article
Fifer, Z., Torres, T., Erne, S., Avgoustidis, A., Hill, R. J. A., & Weinfurtner, S. (2019). Analog cosmology with two-fluid systems in a strong gradient magnetic field. Physical Review E, 99(3), Article 031101(R). https://doi.org/10.1103/physreve.99.031101

We propose an experiment combining fluid dynamics and strong magnetic field physics to simulate cosmological scenarios. Our proposed system consists of two immiscible, weakly magnetized fluids moved through a strong gradient magnetic field. The diama... Read More about Analog cosmology with two-fluid systems in a strong gradient magnetic field.

Dynamics of junctions and the multitension velocity-dependent one-scale model (2019)
Journal Article
Rybak, I., Avgoustidis, A., & Martins, C. (2019). Dynamics of junctions and the multitension velocity-dependent one-scale model. Physical Review D, 99(6), Article 063516. https://doi.org/10.1103/physrevd.99.063516

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 strings in a Friedmann-Lemaître-Robertson-Walker background and obtain the... Read More about Dynamics of junctions and the multitension velocity-dependent one-scale model.