Communications in Physics

New Physics in the 3-3-1 models

2024-06-26T17:26:41+07:00

Two main ingredients of current particle physics such as local gauge symmetry and mass generation via the Higgs mechanism being basic ground of the Standard Model are widely confirmed by experimental data. However, some problems such as neutrino masses, dark matter, baryon asymmetry of Universe have clearly indicated that the Standard Model cannot be the ultimate theory of nature. To surpass the mentioned puzzles, many extensions of the Standard Model (called beyond Standard Model) have been proposed. Among beyond Standard Models, the 3-3-1 models have some intriguing features and they get wide attention. The pioneer models develop in some directions. In this paper, new main versions of the 3-3-1 models and their consequences are presented.

Multiple mobility edges in quasi-periodic mosaic lattices revisited: A numerical study based on time-dependent reflection

2024-07-22T15:38:25+07:00

The dynamics of a short wave packet in one-dimensional quasi-periodic lattices with mosaic modulated on-site potentials is investigated numerically. This model is characterized by the modulation period $\kappa$ and the quasi-periodic potential strength $\lambda$. For parabolic wave packets with a given central energy $E_{0}$, we calculate the averaged time-dependent reflectance, $\langle R(t) \rangle$, for various values of $\kappa$ and $\lambda$. From the extensive numerical calculations, we show that there exist multiple mobility edges in such a model with the number of mobility edges to be always equal to $2(\kappa-1)$.

Analysis of ionic defect distribution on perovskite photodetector by temperature-dependent deep level transient spectroscopy

2024-09-23T15:26:00+07:00

In this work we used temperature-dependent deep-level transient spectroscopy for the analysis of the role of additives in high-efficiency organohalide perovskite solar cells prepared by solution-based method. The ionic defect parameters like activation energy, trap density and diffusion constants for each observed ionic species were compared in different solid-state organic--inorganic metal halide perovskites. The obtained results showed that both the Carbonyldiphthalic anhydride and Hexafluoroisopropylidene diphthalic anhydride additives have significantly passivated deep level trap density, consequently enhance perovskite solar cell performance.