High Energy Density Physics最新文献

{"title":"Warm inflationary scenario in modified teleparallel gravity with matter-torsion coupling","authors":"Samson S. Hounmenou ,&nbsp;Ines G. Salako ,&nbsp;R.D. Boko ,&nbsp;V.A. Monwanou","doi":"10.1016/j.hedp.2025.101219","DOIUrl":"10.1016/j.hedp.2025.101219","url":null,"abstract":"<div><div>This study investigates warm inflation in the context of modified teleparallel gravity specifically <span><math><mrow><mstyle><mi>f</mi></mstyle><mrow><mo>(</mo><mi>T</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity under strong dissipative conditions (<span><math><mrow><mi>r</mi><mo>&gt;</mo><mn>1</mn></mrow></math></span>). We examine two inflationary potentials, Chaotic and Natural, evaluating scenarios with both constant and variable dissipation coefficients. For the Chaotic potential with a fixed dissipation parameter, the spectral index shows negligible sensitivity to the model’s parameters, while the tensor-to-scalar ratio depends markedly on them. Notably, certain choices for the potential exponent align well with Planck 2018 observational data. When the dissipation coefficient becomes variable, only one specialized case of the Chaotic potential remains consistent with observational limits. Here, shifts in model parameters dynamically adjust the relevant energy scales. Turning to the Natural potential, our analysis reveals that <span><math><mrow><mstyle><mi>f</mi></mstyle><mrow><mo>(</mo><mi>T</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity corrections prove pivotal: they not only reshape the spectral index and tensor-to-scalar ratio but also allow the spontaneous symmetry breaking scale to dip below the Planck scale while still matching experimental constraints. These outcomes sharply contrast with cold inflation models, where analogous <span><math><mrow><mstyle><mi>f</mi></mstyle><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity modifications fail to salvage such potentials. Ultimately, we suggest that probing alternative <span><math><mrow><mstyle><mi>f</mi></mstyle><mrow><mo>(</mo><mi>T</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> functional forms and reevaluating other previously excluded potentials could deepen our understanding of warm inflation’s feasibility.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"57 ","pages":"Article 101219"},"PeriodicalIF":0.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dark energy influenced compact spheres under Karmarkar condition","authors":"Mariyah Aslam ,&nbsp;Adnan Malik ,&nbsp;Gulfam Shahzadi ,&nbsp;Alina Asim ,&nbsp;Fatemah Mofarreh","doi":"10.1016/j.hedp.2025.101233","DOIUrl":"10.1016/j.hedp.2025.101233","url":null,"abstract":"<div><div>This paper investigates the viability and stability of anisotropic dark energy stars using the embedding class-1 technique within Einstein’s general relativity. The widely used Krori–Barua ansatz is adopted for the temporal metric component, while the radial counterpart is derived by enforcing the Karmarkar condition. To close the system, we introduce an equation of state in which the dark energy density is directly proportional to the isotropic baryonic fluid density, with the proportionality parameter <span><math><mi>ϖ</mi></math></span>. The model’s unknown parameters are determined by applying junction conditions between the interior solution and the Schwarzschild exterior manifold. A comprehensive physical analysis ensures the regularity and consistency of metric potentials and state determinants. The compactness factor and gravitational redshift provide insights into stellar objects such as PSR J1903+327, SMC X-4, LMC X-4 and Her X-1. Furthermore, energy bounds validate the model’s physical plausibility, while stability is examined through the Tolman–Oppenheimer–Volkoff equation, causality condition, Zeldovich criterion and adiabatic index. The results indicate that, for the observed masses and radii of the selected stellar objects, the proposed embedded model remains physically consistent, offering a viable and stable description of anisotropic dark energy stars.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"57 ","pages":"Article 101233"},"PeriodicalIF":0.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating casimir wormhole solutions supported by Yukawa potentials in modified symmetric teleparallel gravity","authors":"Chaitra Chooda Chalavadi ,&nbsp;V. Venkatesha ,&nbsp;H. Aruna Kumara ,&nbsp;S.V. Divya Rashmi","doi":"10.1016/j.hedp.2025.101222","DOIUrl":"10.1016/j.hedp.2025.101222","url":null,"abstract":"<div><div>This study delves into the phenomenon of Yukawa–Casimir wormholes within the context of modified symmetric teleparallel gravity. By employing an original approach that combines Casimir energy density with Yukawa potentials, we investigate two distinct scenarios. The manuscript examines the impact of model parameters on the existence of these wormhole structures and explores their characteristics by incorporating a traceless fluid equation of state. Notably, the derived shape functions satisfy all fundamental criteria, and the presence of exotic matter is confirmed in all cases. Furthermore, we analyze the stability of Yukawa–Casimir wormholes using the TOV equation, which supports the viability and stability of our constructed model.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"57 ","pages":"Article 101222"},"PeriodicalIF":0.9,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144902507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamics of a singularity-free universe in f(R,T2) Gravity","authors":"I. Hashim ,&nbsp;M. Sharif ,&nbsp;M. Zeeshan Gul","doi":"10.1016/j.hedp.2025.101223","DOIUrl":"10.1016/j.hedp.2025.101223","url":null,"abstract":"<div><div>This study investigates bouncing cosmological solutions to understand cosmic evolution in the background of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><msup><mrow><mi>T</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>)</mo></mrow></mrow></math></span> theory, where <span><math><mi>R</mi></math></span> denotes the Ricci scalar and <span><math><mrow><msup><mrow><mi>T</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>=</mo><msup><mrow><mi>T</mi></mrow><mrow><mi>ξ</mi><mi>η</mi></mrow></msup><msub><mrow><mi>T</mi></mrow><mrow><mi>ξ</mi><mi>η</mi></mrow></msub></mrow></math></span> is the self-contraction of the stress energy tensor. For this purpose, we analyze a flat Friedmann–Robertson–Walker spacetime with perfect matter distribution and assume a specific functional form of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><msup><mrow><mi>T</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>)</mo></mrow></mrow></math></span> theory to explore the effects of modified gravity on cosmic dynamics. Further, we evaluate super bounce and exponential bounce models to investigate the non-singular universe in this framework. The positive behavior of energy density and the negative behavior of pressure, as well as null energy condition ensure the existence of a viable cosmological bounce solutions. The equation of state parameter indicates the phantom region corresponding to the super bounce model and the quintessence era for exponential bounce model, indicating that the universe experiences cosmic acceleration. The stability of the obtained solutions is analyzed through linear perturbation, demonstrating the model’s robustness against small fluctuations and confirming its validity as a framework for understanding cosmic evolution. Our findings suggest that this modified gravitational theory provides an alternative framework to standard cosmology, offering insights into gravitational interactions and the early cosmic evolution.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"57 ","pages":"Article 101223"},"PeriodicalIF":0.9,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144902509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implications of modified Gauss–Bonnet gravity on gravastar-like structures: High-energy stability and electromagnetic effects","authors":"M. Yousaf ,&nbsp;H. Asad ,&nbsp;Muhammad Aslam","doi":"10.1016/j.hedp.2025.101221","DOIUrl":"10.1016/j.hedp.2025.101221","url":null,"abstract":"<div><div>In this study, we explore the formation and stability of electrically charged, singularity-free, cylindrically symmetric gravastar-like structures as viable alternatives to black holes in the framework of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>G</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity. Here, <span><math><mi>G</mi></math></span> represents the Gauss–Bonnet term, while <span><math><mi>T</mi></math></span> denotes the trace of the energy–momentum tensor. We construct solutions across three distinct regions, employing an appropriate equation of state (EoS) for each to describe their physical properties. By deriving the metric coefficients and analyzing the equations of motion with the non-conservation law in a cylindrically symmetric spacetime, we examine the impact of electromagnetic fields on entropy, energy, and structural length. Our analysis is relevant to the study of high-energy astrophysical environments, such as relativistic plasma structures, non-local thermodynamic equilibrium (LTE) kinetic conditions, and the interiors of ultra-dense objects. Through a graphical investigation, we demonstrate that cylindrical gravastar-like objects can exist in nature under specific parametric choices within Gauss–Bonnet corrected gravity, contributing to the broader understanding of matter and radiation interactions under extreme conditions. Furthermore, we assess the role of charge in modifying the stability conditions of these compact objects. Through the second derivative of the potential function and the derived constraint equation, we establish that charged gravastar models exhibit enhanced stability compared to their uncharged counterparts, provided appropriate parametric conditions are met. Our findings offer insights into the interplay between modified gravity, such as <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>G</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity, and the behavior of energy density profiles influenced by electromagnetic effects in compact charged structures.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"57 ","pages":"Article 101221"},"PeriodicalIF":0.9,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144902510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scalar-tensor corrections and observational signatures of hairy black holes in Horndeski gravity","authors":"Erdem Sucu,&nbsp;İzzet Sakallı","doi":"10.1016/j.hedp.2025.101220","DOIUrl":"10.1016/j.hedp.2025.101220","url":null,"abstract":"<div><div>We investigate specific physical properties of a previously derived hairy black hole solution in a particular Horndeski gravity model, focusing on observational signatures that might distinguish it from standard General Relativity (GR) solutions. Working with the metric function <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>r</mi><mo>)</mo></mrow><mo>=</mo><mn>1</mn><mo>−</mo><mfrac><mrow><mn>2</mn><mi>m</mi></mrow><mrow><mi>r</mi></mrow></mfrac><mo>+</mo><mfrac><mrow><mi>h</mi></mrow><mrow><mi>r</mi></mrow></mfrac><mo>ln</mo><mfenced><mrow><mfrac><mrow><mi>r</mi></mrow><mrow><mn>2</mn><mi>m</mi></mrow></mfrac></mrow></mfenced></mrow></math></span> derived by Perez Bergliaffa et al., where <span><math><mi>h</mi></math></span> represents the scalar hair parameter, we analyze its horizon structure and thermodynamic behavior. We demonstrate how the parameter <span><math><mi>h</mi></math></span> modifies the Hawking temperature according to <span><math><mrow><msub><mrow><mi>T</mi></mrow><mrow><mi>H</mi></mrow></msub><mo>=</mo><mfrac><mrow><mn>2</mn><mi>m</mi><mo>+</mo><mi>h</mi></mrow><mrow><mn>16</mn><mi>π</mi><msup><mrow><mi>m</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></mfrac></mrow></math></span>, with negative values suppressing temperature below the Schwarzschild baseline while positive values enhance it, potentially leading to altered evaporation processes compared to standard black holes. Using the Hamilton–Jacobi formalism modified by generalized uncertainty principle (GUP) considerations, we explore wave propagation and particle motion in this spacetime, deriving particle-dependent temperature corrections that introduce species-specific thermodynamic behavior. We derive analytical expressions for gravitational deflection angles in three distinct contexts: light rays in vacuum, electromagnetic waves in plasma, and massive particles, applying both the Gauss–Bonnet theorem and the Jacobi metric approach. For each case, we present explicit formulas showing the characteristic logarithmic terms introduced by the scalar hair, with plasma effects amplifying these signatures through frequency-dependent modifications. Through numerical analysis illustrated in our figures, we demonstrate how the scalar hair parameter influences the magnitude of these effects, revealing that negative <span><math><mi>h</mi></math></span> values produce dramatically different phenomenology compared to positive values. Our entropy analysis reveals logarithmic corrections to the Bekenstein–Hawking area law consistent with quantum gravity predictions, supporting remnant formation scenarios that could resolve the information paradox.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101220"},"PeriodicalIF":0.9,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interplay of Einasto density profile and complexity on wormhole dynamics in modified gravity theory","authors":"Tayyab Naseer ,&nbsp;M. Sharif ,&nbsp;Mona Faiza ,&nbsp;Wedad Albalawi ,&nbsp;Abdel-Haleem Abdel-Aty","doi":"10.1016/j.hedp.2025.101218","DOIUrl":"10.1016/j.hedp.2025.101218","url":null,"abstract":"<div><div>The goal of this study is to explore the existence of charged traversable wormholes coupled with an Einasto density profile within <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity theory through the implication of its standard linear model. The Morris-Thorne line element is considered in this regard through which we develop the field equations characterizing anisotropic fluid setup. We then determine two distinct shape functions by varying the redshift parameter as constant and variable. The established functions fulfill the required conditions and connect two asymptotically flat spacetime regions. We also assess their feasibility by checking whether they violate the null energy conditions. Further, we explore the gravitational mass and complexity factor for the obtained model. It is noted that the later factor attains its lowest value at all the points near the wormhole throat. Our analysis shows that these wormhole geometries comply with the necessary conditions for existence, and hence, are valid within the framework of this modified gravity.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101218"},"PeriodicalIF":0.9,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influences of shock imprinting on mix in a 3D-printed porous media","authors":"R.S. Lester,&nbsp;B.J. Albright,&nbsp;N.S. Christiansen,&nbsp;T.A. Coffman,&nbsp;L.M. Green,&nbsp;M.A. Gunderson,&nbsp;B.M. Haines,&nbsp;Y. Kim,&nbsp;P.M. Kozlowski,&nbsp;J.M. Levesque,&nbsp;R.E. Olson,&nbsp;D.W. Schmidt,&nbsp;R.W. VanDervort,&nbsp;C.H. Wong","doi":"10.1016/j.hedp.2025.101224","DOIUrl":"10.1016/j.hedp.2025.101224","url":null,"abstract":"<div><div>Mixing of materials in porous media can cause a significant impact on fusion yield as previously demonstrated by the National Ignition Facility (NIF) MARBLE Campaign. Initially, the reactants are separated, with deuterium in the lattice struts and a tritium gas fill in the voids. Lattice parameters such as the strut thickness and relative pitch, provide a control for the mix parameters in the experiment. Los Alamos National Laboratory’s (LANL) BOSQUE project looks to better understand how the mix of the reactants and shell materials impact the fusion burn and resultant yield on various laser platforms. xRAGE’s Eulerian hydrodynamics and adaptive mesh refinement (AMR) provide the unique ability to study the impacts of multiscale features of complex lattice structures. This modeling provides the ability to measure shock front variations as the wave progress’ through a given media. Initial conditions of the lattice are essential to accurately model mix and burn measured by experiment. By varying the initial orientation and densities of these lattice regions the early time dynamics of how the shock is launched into the system is changed and advocates for the study of resulting effects. In this work, we will study the sensitivities of shock effects in varying 3D printed geometric systems and how these shocks alter the structure and mix in the lattice. We will discuss both preliminary experimental results and simulations to help plan and constrain future experiments where we will study the impact of different lattice geometries and lattice bulk densities. This work concludes with the relative impacts of lattice geometries on shock speeds at different bulk densities and the resultant mix widths due to those shock interactions. We see agreement with theory at the higher end of our bulk density study, however, as we approach lower bulk density systems the dynamics of these interactions begin to change.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"57 ","pages":"Article 101224"},"PeriodicalIF":0.9,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144912307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NN-PTS: a neural network-assisted PAPR reduction technique for OTFS with high-order modulation","authors":"Arun Kumar ,&nbsp;Aziz Nanthaamornphong","doi":"10.1016/j.hedp.2025.101225","DOIUrl":"10.1016/j.hedp.2025.101225","url":null,"abstract":"<div><div>This paper introduces a new neural network-based partial transmit sequence (NN-PTS) approach for peak-to-average power ratio (PAPR) reduction in orthogonal time frequency space (OTFS) modulation, assessed over various modulation schemes—512-QAM, 256-QAM, and 64-QAM. The new method overcomes the PAPR and bit error rate (BER) trade-off associated with the traditional approaches. For 512-QAM, NN-PTS has an outstanding PAPR reduction to 4.8 dB at a CCDF of 10⁻⁴, surpassing traditional approaches like Selected Mapping (SLM)+PTS (8 dB), PTS (9.9 dB), and others. Likewise, for 256-QAM and 64-QAM, NN-PTS has minimum PAPR values of 3.7 dB and 1.8 dB, respectively, while having significant gains of 2.7 dB to 4.7 dB and 3.4 dB to12 dB over other techniques. In addition, BER analysis also substantiates that NN-PTS reduces PAPR while exhibiting poor BER performance. To illustrate, under 512-QAM at BER = 10⁻⁵, only 10 dB SNR is needed for NN-PTS, while it has a maximum 13 dB gain over the original OTFS signal. A similar trend also occurs for 256-QAM, where the NN-PTS achieves up to a 10.1 dB improvement in SNR compared to the traditional schemes. The outcomes prove that the NN-PTS best trades off PAPR reduction and BER efficiency under changing modulation orders, adaptable to various fading conditions. This renders the proposed NN-PTS a promising candidate for next-generation and 5 G systems, where high spectral efficiency and resilient signal quality are essential.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101225"},"PeriodicalIF":0.9,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144886100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cosmology in f(R,Lm,T) gravity theory using gravitational decoupling","authors":"Tayyab Naseer ,&nbsp;M. Sharif ,&nbsp;Faisal Javed ,&nbsp;H.I. Alrebdi ,&nbsp;Abdel-Haleem Abdel-Aty","doi":"10.1016/j.hedp.2025.101217","DOIUrl":"10.1016/j.hedp.2025.101217","url":null,"abstract":"<div><div>This article considers the existing isotropic dynamical spherically symmetric solution and extends its domain through a recently proposed scheme, refers to the decoupling of gravitational sources within the framework of Lagrangian-based gravity model. After adding an additional fluid distribution into the seed perfect matter, the minimal geometric deformation approach is implemented that leads to a couple of distinct sets of field equations. Since we aim to discuss different phases of cosmic evolution, the first set is handled by considering the flat FLRW model along with a particular form of the scale factor. We also employ a barotropic equation of state which helps in achieving our goal. As the second set is concerned, a density-like constraint is adopted to make the system uniquely solvable. After doing so, we combine the solutions of field equations characterizing both fluid setups using some particular relations. A detailed graphical discussion on the impact of the decoupling and the considered model parameters is also carried out. Finally, we conclude that the modified theory under consideration supports two evolutionary phases such as the radiation and matter-dominated epochs.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"56 ","pages":"Article 101217"},"PeriodicalIF":0.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144771866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}