94 citations · 129 across the 11 of their papers we have counts for
11 papers
Constraint closure and gravitational-wave content of shear-free cosmologies in metric f(R) gravity
Mudhahir Al Ajmi, Amare Abebe
We derive the consistency conditions governing the propagating content of linear shear-free perturbations of Friedmann-Lema\^ıtre-Robertson-Walker cosmologies in metric grav…
Thermal suppression of bubble nucleation at first-order phase transitions in the early Universe
Mudhahir Al Ajmi, Mark Hindmarsh
One of the key observables in a gravitational wave power spectrum from a first order phase transition in the early Universe is the mean bubble spacing, which depends on the rate of…
Shear-free conditions of a Chaplygin-Gas-dominated universe
Amare Abebe, Mudhahir Al Ajmi, Maye Elmardi +2
In this work, we revisit the shear-free conjecture of general relativity and show the violation of the well-known shear-free condition for perfect-fluid spacetimes. It had been sho…
On gravitational wave modes in Nash theory of gravity
Phongpichit Channuie, Davood Momeni, Mudhahir Al Ajmi
In this Letter, we consider original Nash theory of gravity. In terms of the scalar fields representation, Nash gravity is equivalent to the action of bi-scalar tensor gravity with…
Quantum Information metric for time-dependent quantum systems and higher-order corrections
Davood Momeni, Phongpichit Channuie, Mudhahir Al Ajmi
It is well established that quantum criticality is one of the most intriguing phenomena which signals the presence of new states of matter. Without prior knowledge of the local ord…
Phase Space description of Nonlocal Teleparallel Gravity
Kazuharu Bamba, Davood Momeni, Mudhahir Al Ajmi
We study cosmological solutions in nonlocal teleparallel gravity or theory, where is the torsion scalar in teleparallel gravity. This is a natural extenstion of the usua…
The quaternionic commutator bracket and its implications
Arbab I. Arbab, Mudhahir Al-Ajmi
A quaternionic commutator bracket for position and momentum shows that the quaternionic wave function, \emph{viz.} , represents a state of a…
Surface tension and curvature energy of quark matter in the NJL model
G. Lugones, A. G. Grunfeld, M. Al Ajmi
In this paper we study the surface tension and the curvature energy of three-flavor quark matter in equilibrium under weak interactions within the Nambu-Jona-Lasinio model. We incl…
Quasi Regular Polyhedra and Their Duals with Coxeter Symmetries Represented by Quaternions II
Mehmet Koca, Mudhahir Al Ajmi, Saleh Al- Shidhani
In this paper we construct the quasi regular polyhedra and their duals which are the generalizations of the Archimedean and Catalan solids respectively. This work is an extension o…
Quasi Regular Polyhedra and Their Duals with Coxeter Symmetries Represented by Quaternions I
Mehmet Koca, Nazife Ozdes Koca, Ramazan Koc
In two series of papers we construct quasi regular polyhedra and their duals which are similar to the Catalan solids. The group elements as well as the vertices of the polyhedra ar…
Grand Antiprism and Quaternions
Mehmet Koca, Mudhahir Al-Ajmi, Nazife Ozdes Koca
Vertices of the 4-dimensional semi-regular polytope, the \textit{grand antiprism} and its symmetry group of order 400 are represented in terms of quaternions with unit norm. It fol…