We review the cosmological implications of the flat directions of the minimally
supersymmetric standard model (MSSM). We describe how field condensates are created …

Solitons emerge in various non-linear systems as stable localized configurations, behaving
in many ways like particles, from non-linear optics and condensed matter to nuclear physics …

Scalar boson stars have attracted attention as simple models for exploring the nonlinear
dynamics of a large class of ultracompact and black hole mimicking objects. Here, we study …

We investigate the formation, gravitational clustering, and interactions of solitons in a self-
interacting, nonrelativistic scalar field in an expanding universe. Rapid formation of a large …

We study the formation of Q balls which are made of flat directions that appear in the
supersymmetric extension of the standard model in the context of gravity-mediated …

We show that nontopological solitons, known as Q-balls, are promising candidates for self-
interacting dark matter. They can satisfy the cross-section requirements for a broad range of …

A bstract The physics of individual Q-balls and interactions between multiple Q-balls are well-
studied in classical numerical simulations. Interesting properties and phenomena have been …

A review is given of more than a dozen subtopics within the general study of ferroelectrics,
with emphasis upon controversies, unsolved problems, and prospects for the next decade …

Spatially-bound objects across diverse length and energy scales are characterized by a
binding energy. We propose that their spatial structure is mathematically encoded as …

Light (pseudo-) scalar fields are promising candidates to be the dark matter in the Universe.
Under certain initial conditions in the early Universe and/or with certain types of self …