Научные статьи: Recent submissions

  • 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 ...
  • Resonant behavior of the pp → {pp} s π 0 reaction at the energy s = 2.65 GeV 
    Tsirkov, Dmitry; Baimurzinova, B.; Komarov, V.I.; Kulikov, A.V. (arXiv, 2023)
    We report on measurements of the differential cross section dσ/dΩ in the energy region of s=2.5–2.9GeV of the reaction pp→{pp}sπ0, where {pp}s is a S01 proton pair. The experiment has been performed with the ANKE spectrometer ...
  • Shadow of the 5D Reissner-Nordstr¨om AdS Black Hole 
    Mandal, Surajit; Upadhyay, Sudhaker; Myrzakulov, Yerlan; Yergaliyeva, Gulmira (arXiv, 2022)
    We discuss the shadow cast by the charged Reissner-Nordstr¨om (RN) AdS black hole. With the help of Killing equation and Hamilton-Jacobi equation, we calculate the geodesic equations for null particle. With the help of ...
  • Cosmology in f(Q) gravity: A unified dynamical system analysis at background and perturbation levels 
    Khyllep, Wompherdeiki; Dutta, Jibitesh; Saridakis, Emmanuel N.; Yesmakhanova, Kuralay (arXiv, 2022)
    Motivated by the fact that cosmological models based on f(Q) gravity are very efficient in fitting observational datasets at both background and perturbation levels, we perform a combined dynamical system analysis of both ...
  • The Oscillatory Universe, phantom crossing and the Hubble tension 
    Sharma, Mohit K.; Jas Pacif, Shibesh Kumar; Yergaliyeva, Gulmira; Yesmakhanova, Kuralay (arXiv, 2022)
    We investigate the validity of cosmological models with an oscillating scale factor in relation to late-time cosmological observations. We show that these models not only meet the required late time observational ...
  • Anisotropic f (Q) gravity model with bulk viscosity 
    Koussour, M.; Shekh, S. H.; Bennai, M.; Myrzakulov, N. (arXiv, 2024)
    This study investigates the dynamics of a spatially homogeneous and anisotropic LRS Bianchi typeI universe with viscous fluid in the framework of f(Q) symmetric teleparallel gravity. We assume a linear form for f(Q) and ...
  • Initial conditions of pre-inflation with Hilltop potential in loop quantum cosmology 
    Shahalam, M.; Yesmakhanova, Kuralay; Umurzakhova, Zhanar (arXiv, 2023)
    In this paper, we investigate the dynamics of pre-inflation with Hilltop potential in the framework of loop quantum cosmology. The initial conditions of inflaton field at the quantum bounce is categorized into two classes, ...
  • STUDY OF THE INFLUENCE OF RADIATION-INDUCED DAMAGE ACCUMULATION DURING THE INTERACTION OF HEAVY Xe22+ IONS ON CHANGES IN THE THERMOPHYSICAL PARAMETERS OF ZIRCONIA CERAMICS 
    Kozlovskiy, A.L. (Eurasian Physical Technical Journal, 2023)
    The aim of this paper is to evaluate the influence of the processes of radiation-induced damage formation in the form of point defects, dislocations and vacancies, as well as their accumulation and the formation of locally ...
  • Quintessential Inflation and curvaton reheating 
    Agarwal, Abhineet; Bekov, Sabit; Myrzakulov, Kairat (arXiv, 2018)
    In this paper we consider a model of quintessential inflation based upon inverse hyperbolic potential. We employ curvaton mechanism for reheating which is more efficient than gravitational particle production; the mechanism ...
  • Ratio of Wheel/Rail Steel Hardness that Ensures Minimum Wear 
    Kanayeva, Аzamat; Kanayev, Amangeldy; Мoldakhmetova, Aliya (Tribology in Industry, 2023)
    Different variants of the hardness of the wheel/rail friction pair were investigated to determine the optimal hardness range of the wheel/rail that ensures the minimum wear under selected test conditions. A pair of ...
  • Enhancing the efficacy of humidifier-dehumidifier desalination in humid regions through the use of an absorption refrigeration cycle (an economic and experimental investigation) 
    Abdullaev, Sherzod; Abdullaeva, Barno Sayfutdinovna; Opakhai, Serikzhan; Alzubaidi, Laith H. (International Journal of Thermofluids, 2024)
    This experimental study investigates the performance of a novel humidifier-dehumidifier (HDH) desalination system integrated with a vapor absorption refrigerator (VAR) and photovoltaic (PV) panels for humid regions. The ...

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