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Physics and Astronomy: Recent submissions

Now showing items 101-120 of 122

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 ...
Experimental evaluation of combined humidifier-dehumidifier desalination with thermoelectric module for simultaneous use of heating and cooling

Kuterbekov, Kairat A.; Kabyshev, Asset M.; Bekmyrza, Kenzhebatyr Zh.; Kubenova, Marzhan M.; Aghajani.Ab, Amirhossein (International Journal of Thermofluids, 2024)

The objective of this study was to assess the performance of a Humidifier-Dehumidifier (HDH) desalination system paired with thermoelectric cooling, in order to achieve effective water desalination. The system employed ...
Energy, exergy and thermo-economics analyses of hybrid solar, steam turbine and biomass gasification system for hydrogen production by polymer membrane electrolyzer

Kuterbekov, Kairat; Kabyshev, Asset; Bekmyrza, Kenzhebatyr; Kubenova, Marzhan (International Journal of Thermofluids, 2024)

This study presents an evaluation of the energy exergy and thermo-economics of a hybrid power generation system that simultaneously produces power, heat, and hydrogen using solar and biomass energy. The system employs ...
A comprehensive parametrization approach for the Hubble parameter in scalar field dark energy models

Koussour, M.; Myrzakulov, N.; Myrzakulova, S.; Sofuoğlu, 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 parametrization is characterized ...
A bio inspired learning scheme for the fractional order kidney function model with neural networks

Sabir, Zulqurnain; Ahmad Bhat, Shahid; Wahab, Hafiz Abdul; Camargo, Maria Emilia; Abildinova, Gulmira; Zulpykhar, Zhandos (Chaos, Solitons and Fractals, 2024)

The numerical procedures of the fractional order kidney function model (FO-KFM) are presented in this study. These derivatives are implemented to get the precise and accurate solutions of FO-KFM. The nonlinear form of ...
Non-minimal derivative coupling theories compatible with GW170817

Oikonomou, V.K. (Nuclear Physics, Section B, 2024)
More exact thermodynamics of nonlinear charged AdS black holes in 4D critical gravity

Paul, Prosenjit; Upadhyay, Sudhaker; Myrzakulov, Yerlan; Singh, Dharm Veer; Myrzakulov, Kairat (Nuclear Physics B, 2023)

In this paper, we investigate nonlinearly charged AdS black holes in four-dimensional critical gravity and study more exact black hole thermodynamics under the effect of small statistical fluctuations. We compute the ...
Revisiting Einstein-Gauss-Bonnet theories after GW170817

Oikonomou, V.K. (Physics Letters B, 2024)
PBH formation in EFT of single field inflation with sharp transition

Choudhury, Sayantan; Panda, Sudhakar; Sami, M. (Physics Letters B, 2023)
Structure of the prompt neutron multiplicity distribution in the spontaneous fission of 256Rf

Isaev, A.V.; Mukhin, R.S.; Andreev, A.V.; Asfari, Z.; Chelnokov, M.L.; Chepigin, V.I.; Devaraja, H.M.; Dorvaux, O.; Gall, B.; Hauschild, K.; Izosimov, I.N.; Kuznetsova, A.A.; Lopez-Martens, A.; Malyshev, O.N.; Popeko, A.G.; Popov, Yu.A.; Rahmatinejad, A.; Sailaubekov, B.; Shneidman, T.M.; Sokol, E.A.; Svirikhin, A.I.; Tezekbayeva, M.S.; Yeremin, A.V.; Zamyatin, N.I. (Physics Letters B, 2023)
Phase portraits and new exact traveling wave solutions of the (2+1)-dimensional Hirota system

Shaikhova, Gaukhar; Kutum, Bayan; Syzdykova, Arailym (Results in Physics, 2023)

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