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7 papers · 2 filters
Minkowski Functional Description of Microwave Background Gaussianity
Serge Winitzki, Arthur Kosowsky
A Gaussian distribution of cosmic microwave background temperature fluctuations is a generic prediction of inflation. Upcoming high-resolution maps of the microwave background will…
Ultra-high energy cosmic rays without GZK cutoff
V. Berezinsky, M. Kachelriess, A. Vilenkin
We study the decays of ultraheavy (m_X \geq 10^{13}GeV) and quasistable (lifetime τ_X much larger than the age of the Universe t_0) particles as the source of Ultra High Energy Cos…
Magnetic Fields from Phase Transitions
Mark Hindmarsh, Allen Everett
The generation of primordial magnetic fields from cosmological phase transitions is discussed, paying particular attention to the electroweak transition and to the various definiti…
Cosmic Necklaces and Ultrahigh Energy Cosmic Rays
Veniamin Berezinsky, Alexander Vilenkin
Cosmic necklaces are hybrid topological defects consisting of monopoles and strings, with two strings attached to each monopole. We argue that the cosmological evolution of necklac…
Topological defects and open inflation
Alexander Vilenkin
Topological defects can naturally be formed soon after bubble nucleation in the open inflation scenario. The defects are not completely diluted away by the subsequent period of inf…
High Energy Particles from Monopoles Connected by Strings
Veniamin Berezinsky, Xavier Martin, and Alexander Vilenkin
Monopole-antimonopole pairs connected by strings and monopole-string networks with strings attached to each monopole can be formed at phase transitions in the early universe.…