Physics and Astronomy: Недавние поступления

  • Investigating the dark energy phenomenon in f(R, Lm) cosmological models with observational constraints 
    Myrzakulova, S.; Koussour, M.; Myrzakulov, N. (Physics of the Dark Universe, 2024)
    This paper explores the dark energy phenomenon within the context of f(R,Lm) gravity theory. Two specific non-linear f(R,Lm) models are considered: f(R,Lm)=R2+Lαm and f(R,Lm)=R2+(1+αR)Lm, where the parameter α is free. ...
  • Scalar field dark energy: Insights into cosmological evolution and black hole accretion 
    Koussour, M.; Sekhmani, Y.; Alfedeel, Alnadhief H. A.; Awad, F.; Myrzakulov, N. (The European Physical Journal Plus, 2023)
    We propose a novel approach to parameterize the equation of state for Scalar Field Dark Energy (SFDE) and use it to derive analytical solutions for various cosmological parameters. Using statistical MCMC with Bayesian ...
  • A comprehensive parametrization approach for the Hubble parameter in scalar field dark energy models 
    Koussour, M.; Myrzakulov, N.; Myrzakulova, S.; Sofuogl, D. (Results in Physics, 2023)
    This study proposes a novel parametrization approach for the dimensionless Hubble parameter i.e. E2(z)=A(z)+β(1+γB(z)) in the context of scalar field dark energy models. The parameterization is characterized by two functions, ...
  • Square-Root parametrization of dark energy in f (Q) cosmology 
    Koussour, M.; Myrzakulov, N.; Alfedeel, Alnadhief H. A.; Hassan, E. I.; Sofuoglu, D.; Mirgani, Safa M. (Communications in Theoretical Physics, 2023)
    This paper is a parametrization of the equation of state (EoS) parameter of dark energy (DE), which is parameterized using Square-Root (SR) form i.e. ωSR=ω0+ω1zz2+1√, where ω0 and ω1 are free constants. This parametrization ...
  • Reactions induced by 30 MeV 3He beam on 9Be: Cluster transfer reactions 
    Urazbekov, B A; Issatayev, T; Lukyanov, S M; Azhibekov, A; Denikin, A S; Mendibayev, K; Janseitov, D M; Penionzhkevich, Yu E; Kuterbekov, K A; Zholdybayev, T K (Chinese Physics C, 2023)
    An experiment has been carried out for studying the cluster structure of 9Be induced by the 3He ions at the energy of 30 MeV. As results of the nuclear reaction 3He + 9Be the differential cross sections for the exit channels ...
  • Modeling cosmic acceleration with a generalized varying deceleration parameter 
    Koussour, M.; Myrzakulov, N.; Alfedeel, Alnadhief H. A.; Awad, F.; Bennai, M. (Physics of the Dark Universe, 2023)
    Understanding the accelerating expansion of the Universe remains a fundamental challenge in modern cosmology. In this paper, we investigate a cosmological model parametrized by a generalized variable deceleration parameter ...
  • Axion-Neutrino Couplings, Late-time Phase Transitions and the Far Infrared Physics 
    Oikonomou, V.K. (Physics of the Dark Universe, 2023)
    The far infrared physics is a fascinating topic for theoretical physics, since the foundation of quantum field theory and neutrinos seem to be strongly related with the far infrared physics of our Universe. In this work ...
  • Constrained evolution of effective equation of state parameter in non-linear f(R,Lm) dark energy model: Insights from Bayesian analysis of cosmic chronometers and Pantheon samples 
    Myrzakulov, N.; Koussour, M.; Alfedeel, Alnadhief H. A.; Abebe, Amare (The European Physical Journal Plus, 2023)
    We conduct a Bayesian analysis of recent observational datasets, specifically the Cosmic Chronometers (CC) dataset and Pantheon samples, to investigate the evolution of the EoS parameter in dark energy models. Our study ...
  • Quintessence-like features in the late-time cosmological evolution of f(Q) symmetric teleparallel gravity 
    Myrzakulov, N.; Koussour, M.; Mussatayeva, A. (Chinese Journal of Physics, 2023)
    In this study, we investigate the cosmological history within the framework of modified f(Q) gravity, which proposes an alternative theory of gravity where the gravitational force is described by a non-metricity scalar. ...
  • Constraining the f(R,T)=R+2λT cosmological model using recent observational data 
    Myrzakulov, N.; Koussour, M.; Alfedeel, Alnadhief H. A.; Hassan, E. I. (Chinese Physics C, 2023)
    In this paper, we consider a comprehensive investigation of the cosmological model described by f(R,T)=R+2λT (where λ represents a free parameter) in light of the most recent observational data. By constraining the model ...
  • Cosmological constraints on dark energy in f(Q) gravity: A parametrized perspective 
    Mussatayeva, A.; Myrzakulov, N.; Koussour, M. (Physics of the Dark Universe, 2023)
    In this paper, we focus on the parametrization of the effective equation of state (EoS) parameter within the framework of f(Q) symmetric teleparallel gravity. Here, the gravitational action is represented by an arbitrary ...
  • A new f (Q) cosmological model with H (z) quadratic expansion 
    Myrzakulov, N.; Koussour, M.; Jyoti Gogoi, Dhruba (Physics of the Dark Universe, 2023)
    We present a new f(Q) cosmological model capable of reproducing late-time acceleration, i.e. f(Q)=λ0(λ+Q)n by supporting certain parametrization of the Hubble parameter. By using observational data from Hubble, Pantheon, ...
  • Primordial non-Gaussianity from ultra slow-roll Galileon inflation 
    Choudhury, Sayantan; Karde, Ahaskar; Panda, Sudhakar; Sami, M. (Journal of Cosmology and Astroparticle Physics, 2024)
    We present a detailed study of the generation of large primordial non-Gaussianities during the slow-roll (SR) to ultra-slow roll (USR) transitions in the framework of Galileon inflation. We found out that due to having ...
  • Quasinormal modes and phase structure of regular AdS Einstein–Gauss–Bonnet black holes 
    Myrzakulov, Yerlan; Myrzakulov, Kairat; Upadhyay, Sudhaker; Singh, Dharm Veer (International Journal of Geometric Methods in Modern Physics, 2023)
    In this paper, we present an exact regular black hole solution in Einstein–Gauss–Bonnet coupled with nonlinear matter fields. It is a generalization of a regular Einstein–Gauss–Bonnet black hole in 5 DAdS spacetime. ...
  • Galileon inflation evades the no-go for PBH formation in the single-field framework 
    Choudhury, Sayantan; Panda, Sudhakar; Sami, M. (Journal of cosmology and astroparticle physics, 2023)
    We consider Galileon inflation in the Effective Field Theory (EFT) framework and examine the possibility for PBH formation during slow roll (SR) to ultra slow roll (USR) transitions. We show that loop corrections to the ...
  • A new Om(z) diagnostic of dark energy in general relativity theory 
    Myrzakulov, N.; Koussour, M.; Jyoti Gogoi, Dhruba (The European Physical Journal C, 2023)
    In this paper, we propose a new parametrization of dark energy based on the Om(z) diagnostic tool behavior. For this purpose, we investigate a functional form of the Om(z) that predicts the popular dark energy dynamical ...
  • Weak Deflection Angle, Greybody Bound and Shadow for Charged Massive BTZ Black Hole 
    Upadhyay, Sudhaker; Mandal, Surajit; Myrzakulov, Yerlan; Myrzakulov, Kairat (Annals of Physics, 2023)
    We provide a discussion on a light ray in a charged black hole solution in massive gravity. To serve the purpose, we exploit the optical geometry of the black hole solution and find the Gaussian curvature in weak gravitational ...
  • Kinetic Axion Dark Matter in String Corrected f(R) Gravity 
    Oikonomou, V.K.; Fronimos, F.P.; Tsyba, Pyotr; Razina, Olga (Physics of the Dark Universe, 2023)
    Under the main assumption that the axion scalar field mainly composes the dark matter in the Universe, in this paper we shall extend the formalism of kinetic axion R2 gravity to include Gauss-Bonnet terms non-minimally ...
  • Discrete Symmetry Transformations on Non-Abelian Gauge Fields 
    Lahiri, Amitabha; B. Pal, Palash; Shokova, Marina (The Physics Educator, 2023)
    All gauge bosons of a non-abelian gauge theory do not transform the same way under the discrete transformations of time-reversal and charge-conjugation. Moreover, the transformations rules depend on how the generators are ...
  • Detector array for the 7H nucleus multi-neutron decay study 
    Bezbakh, A. A.; Belogurov, S. G.; Chudoba, V.; Fomichev, A. S.; Gorshkov, A. V.; Grigorenko, L. V.; Kaminski, G.; Khirk, M. S.; Knyazev, A. G.; Krupko, S. A.; Mauyey, B.; Muzalevskii, I. A.; Nikolskii, E. Yu.; Quynh, A. M.; Sharov, P. G.; Slepnev, R. S.; Stepantsov, S. V.; Ter-Akopian, G. M.; Wolski, R. (Physics of Particles and Nuclei Letters, 2023)
    Setup fitting the requirements for the detailed study of the five-body decay of the 7H nucleus obtained as a result of the proton transfer from the 8He projectiles to the deuterium target nuclei is being built at the ...

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