Results 61 to 70 of about 24,685 (268)

BOUNDS ON f(G) GRAVITY FROM ENERGY CONDITIONS

, 2010
The f(G) gravity is a theory to modify the general relativity and it can explain the present cosmic accelerating expansion without the need of dark energy. In this paper the f(G) gravity is tested with the energy conditions.
PUXUN WU, HONGWEI YU
core   +1 more source

Black hole surrounded by perfect fluid dark matter in STV gravity: particle dynamics, thermodynamics, gravitational weak lensing and EHT tests

European Physical Journal C: Particles and Fields
In this work, we explore the physical and observational properties of a static, spherically symmetric black hole solution in scalar–tensor–vector gravity (STVG), also known as modified gravity (MOG), in the presence of perfect fluid dark matter (PFDM ...
Sirojiddin Saydullayev, Isomiddin Nishonov, Muysin Dusaliyev, Obid Xoldorov, Sardor Murodov, Shavkat Karshiboev, Sunnatillo Urinov, Bekzod Rahmatov   +7 more
doaj   +1 more source

Microgel‐Based 3D Bioprinting: A Convergent Strategy Integrating Material Design, Jamming Dynamics, and Biological Function

Advanced Healthcare Materials, EarlyView.
Microgel‐based 3D printed constructs represent a compelling and versatile innovation for engineering architecturally complex, dynamically remodelable, and biocompatible structures with high structural fidelity and bioactivity. By integrating material design, biofabrication, and biological function, these systems enable the development of adaptive ...
Elena Ghighină, Andreea Ioana Dinu, Jana Ghițman   +2 more
wiley   +1 more source

Physical attributes of anisotropic compact stars in f(R, G) gravity

European Physical Journal C: Particles and Fields, 2017
Modified gravity is one of the potential candidates to explain the accelerated expansion of the universe. Current study highlights the materialization of anisotropic compact stars in the context of f(R, G) theory of gravity.
M. Farasat Shamir, Saeeda Zia
doaj   +1 more source

Evolution of a Bianchi Type-V Universe in Modified Gravity: Anisotropy Decay, Energy Conditions and Dark Energy Emergence

International Journal of Scientific Research in Science and Technology
We investigate the evolution of a Bianchi type-V universe within the framework of f(R, T) gravity, incorporating a time-varying cosmological constant and a quadratic equation of state. By employing a specific form of the Hubble parameter, exact solutions to the modified field equations are obtained.
null R. P. Wankhade, null A. S. Bansod
openaire   +1 more source

Microsphere‐Templated Conductive Syntactic Foams for Recyclable and Additively Manufactured Soft Electronics

Advanced Healthcare Materials, EarlyView.
This work introduces a microsphere‐templated strategy to fabricate reprocessable PEDOT:PSS syntactic foams with tunable porosity, stable conductivity, and 3D printability. In situ PEDOT:PSS coatings create a conductive network that maintains electrical performance at high void fractions.
Gayaneh Petrossian, Yassine Diouri, Bolan Xu, Sara Ebrahimi, Atharva Pande, Floriane Miquet‐Westphal, Hang Xu, Fabio Cicoira   +7 more
wiley   +1 more source

The viability of modified gravity theories

, 2009
PhDThis thesis studies the viability of classes of modified gravity (MG) theories based on generalisations of the Einstein-Hilbert action. Particular emphasis is given to f(R) theories in both the metric and Palatini formalisms, scalar-tensor theories ...
Uddin, Kotub
core  

Energy bounds in f(R,G) gravity with anisotropic background

, 2017
This paper investigates the energy bounds in modified Gauss–Bonnet gravity with anisotropic background. Locally rotationally symmetric Bianchi type [Formula: see text] cosmological model in [Formula: see text] gravity is considered to meet this aim ...
Ayesha Komal, M. Farasat Shamir
core   +1 more source

Wormhole in $f(Q)$ gravity

, 2022
In this paper, exact asymptotically flat wormhole solutions in the context of symmetric teleparallel gravity, i.e., $f(Q)$ theory of gravity, are investigated. Since modified theories of gravity provide new field equations, we have analyzed some possible
Parsaei, Foad, Rastgoo, Sara, Sahoo, P. K.   +2 more
core   +1 more source

Cosmological implications of f(R,Σ,T) gravity: A unified approach using OHD and SN ia data

Physics Letters B
This paper investigates the cosmological implications of the modified gravity framework known as f(R,Σ,T) gravity, focusing on its potential to unify and extend current cosmological models.
N. Myrzakulov, S.H. Shekh, Anirudh Pradhan   +2 more
doaj   +1 more source