2.4k citations · 12k across the 222 of their papers we have counts for
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Ratchet Baryogenesis with an Analogy to the Forced Pendulum
Kazuharu Bamba, Neil D. Barrie, Akio Sugamoto +2
A new scenario of baryogenesis via the ratchet mechanism is proposed based on an analogy to the forced pendulum. The oscillation of the inflaton field during the reheating epoch af…
Cosmological expansion and contraction from Pauli exclusion principle in -branes
Alireza Sepehri, Ahmed Farag Ali, Kazuharu Bamba +5
We show that the Pauli exclusion principle in a system of -branes can give rise to the expansion and contraction of the universe which is located on an -brane. We start wit…
Constraints on reconstructed dark energy model from SN Ia and BAO/CMB observations
Abdulla Al Mamon, Kazuharu Bamba, Sudipta Das
The motivation of the present work is to reconstruct a dark energy model through the {\it dimensionless dark energy function} , which is the dark energy density in units of i…
Current density and conductivity through modified gravity in the graphene with defects
Alireza Sepehri, Richard Pincak, Kazuharu Bamba +2
We propose a model describing the evolution of the free electron current density in graphene. Based on the concept of Mp-branes, we perform the analysis using the difference betwee…
Causes of Irregular Energy Density in Gravity
Z. Yousaf, Kazuharu Bamba, M. Zaeem ul Haq Bhatti
We investigate irregularity factors for a self-gravitating spherical star evolving in the presence of imperfect fluid. We explore the gravitational field equations and the dynamica…
Inflationary cosmology in unimodular gravity
Kazuharu Bamba, Sergei D. Odintsov, Emmanuel N. Saridakis
We investigate the inflationary realization in the context of unimodular gravity, which is based on the modification of teleparallel gravity, in which one imposes the…
Thermodynamic properties of modified gravity theories
Kazuharu Bamba
We review thermodynamic properties of modified gravity theories such as gravity and gravity, where is the scalar curvature and is the torsion scalar in telepa…
Bounce inflation in Cosmology: A unified inflaton-quintessence field
Kazuharu Bamba, G. G. L. Nashed, W. El Hanafy +1
We investigate a bounce inflation model with a graceful exit into the Friedmann-Robertson-Walker (FRW) decelerated Universe within gravity framework, where is the torsio…
The Influence of Modification of Gravity on the Dynamics of Radiating Spherical Fluids
Z. Yousaf, Kazuharu Bamba, M. Zaeem ul Haq Bhatti
We explore the evolutionary behaviors of compact objects in a modified gravitational theory with the help of structure scalars. Particularly, we consider the spherical geometry cou…
Inflationary universe in fluid description
Kazuharu Bamba
We investigate a fluid description of inflationary cosmology. It is shown that the three observables of the inflationary universe: the spectral index of the curvature perturbations…
Inflationary universe in a conformally-invariant two scalar-field theory with an term
Kazuharu Bamba
We investigate the inflationary universe in a theory where two scalar fields non-minimally coupling to the scalar curvature and an extra term exist and the conformal invarian…