31 papers
Lorentz Symmetry Breaking Traversable Wormhole Models Supported by Einasto Dark Matter
Rana Muhammad Zulqarnain, M. Yousaf, Allah Ditta +3
We investigate static, spherically symmetric traversable wormholes in Kalb Ramond gravity, where spontaneous Lorentz symmetry breaking arises from a non-vanishing vacuum expectatio…
Probing scalarized wormholes through quasi-periodic oscillations and spinning particle dynamics
Asalkhon Alimova, Akbar Davlataliev, Farruh Atamurotov +3
We investigate the dynamics of test particles in a three-parameter scalarized wormhole spacetime within Einstein-scalar field theory. For spinless particles, we derive the orbital…
Coherent and Stochastic Axion Dark Matter from Thermal Relaxation
Shahid Hussain Gurmani, Arzu Cilli, Phongpichit Channuie +3
An axion driven toward a thermal minimum need not remain a coherent condensate. We derive the coupled attenuation of the field mean and production of stochastic momentum modes in a…
Thermal Alignment as a Pathway to Axion Dark Matter
Imtiaz Khan, G. Mustafa, Chengxun Yuan +3
Thermal alignment cannot be inferred from the axion mean alone because the dissipative bath that erases the initial displacement also prepares field and momentum fluctuations. We d…
Testing the Direction of Dark Sector Interaction Using Late-Time Datasets
Anil Kandel, Phongpichit Channuie, Ertan Güdekli +1
In this work, we constrain the phenomenological interacting dark energy IDE model using baryon acoustic oscillation measurements from DESI Data Release 1 and Data Release 2, co…
Conformal dark matter and MHz gravitational waves
Imtiaz Khan, Niamat Ullah, Salvatore Capozziello +2
A localized enhancement of the primordial curvature spectrum can leave two distinct relics: gravitationally produced conformal-fermion dark matter and a scalar-induced stochastic g…