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Physics of the Dark Universe Volume 2019 Issue 1912

Subject Areas: Space and Planetary Science
ISSN: 2212-6864
SJR: 41

Open Access

Journal Article

Analysis method for detecting topological defect dark matter with a global magnetometer network

Masia-Roig, Hector; Smiga, Joseph A.; Budker, Dmitry; Dumont, Vincent; Grujic, Zoran; Kim, Dongok; Kimball, Derek F. Jackson; Lebedev, Victor; Monroy, Madeline; Pustelny, Szymon; Scholtes, Theo; Segura, Perrin C.; Semertzidis, Yannis K.; Shin, Yun Chang; Stalnaker, Jason E.; Sulai, Ibrahim; Weis, Antoine; Wickenbrock, Arne

2019 Astrophysics

doi:10.1016/j.dark.2020.100494

Abstract: The Global Network of Optical Magnetometers for Exotic physics searches (GNOME) is a network of time-synchronized, geographically separated, optically pumped atomic magnetometers that is being used to search for correlated transient signals heralding exotic physics. GNOME is sensitive...
Open Access

Journal Article

Beta-function formalism for k-essence constant-roll inflation

Mohammadi, Abolhassan; Golanbari, Tayeb; Saaidi, Khaled

2019 General Relativity and Quantum Cosmology

doi:10.1016/j.dark.2020.100505

Abstract: The beta function formalism is being used to study the constant-roll inflation in the k-essence model. Assuming the second slow-roll parameter as a constant leads to a first-order differential equation for $\beta$-function which is much easier to solve and find a solution than the...
Open Access

Journal Article

On bubble collisions in strongly supercooled phase transitions

Lewicki, Marek; Vaskonen, Ville

2019 High Energy Physics - Phenomenology

doi:10.1016/j.dark.2020.100672

Abstract: We study strongly supercooled cosmological phase transitions. We perform numerical lattice simulations of two-bubble collisions and demonstrate that, depending on the scalar potential, in the collision the field can either bounce to a false vacuum or remain oscillating around the true...

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