We have discussed the perturbed Gerdjikov-Ivanov (pGI) equation describing optical pulse
propagation (PP) with perturbation effects, which has various applications in optical fibers …

We review recent progress in Schrödinger–Poisson systems in 1+ 2 and 1+ 3 dimensions in
the presence of nonlinear terms. In a mean field approach, this mathematical model …

We demonstrate the propagation dynamics of optical breathers in nonlinear media with a
spatial nonlocality, which is governed by the nonlocal nonlinear Schrödinger equation, by …

Dynamical mechanisms to generate an ultralight axion of mass∼ 10-21–10-22 eV in
supergravity and strings are discussed. An ultralight particle of this mass provides a …

Structures in the Universe, ranging from globular clusters to entire galaxies, are not
described by standard statistical mechanics at equilibrium. Instead, they are formed through …

The study of light beams propagating in the nonlinear, dispersive, birefringent and nonlocal
medium of nematic liquid crystals has attracted widespread interest in the last twenty years …

Abstract The Lambda-Cold Dark Matter model explains cosmological observations most
accurately till date. However, it is still plagued with various shortcomings at galactic scales …

We develop the theory of weak wave turbulence in systems described by the Schrödinger-
Helmholtz equations in two and three dimensions. This model contains as limits both the …

One of the challenging questions in cosmology is the nature of dark matter particles. Fuzzy
dark matter (FDM) is one of the candidates which is made of very light (m FDM≃ 10-22–10 …

Optical analog experiments have captured a lot of interest in recent years by offering a
strategy to test theoretical models and concepts that would be otherwise untestable. The …