Coupled SUGRA quintessence is preferred by current data at >4σ over the uncoupled case, with sign-changing interaction producing phantom-crossing behavior statistically similar to the CPL parametrization.
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An f(R,T) gravity model in anisotropic spacetime is reconstructed via a variable deceleration parameter and tightly constrained by Hubble and Pantheon+ data, reproducing the deceleration-to-acceleration transition and approaching de Sitter expansion.
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Coupled quintessence with a potential from supergravity exhibits sign-changing interaction
Coupled SUGRA quintessence is preferred by current data at >4σ over the uncoupled case, with sign-changing interaction producing phantom-crossing behavior statistically similar to the CPL parametrization.
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Anisotropic Cosmology with interacting Dark Energy in f(R,T) Gravity: A Data-Constrained & independent Approach
An f(R,T) gravity model in anisotropic spacetime is reconstructed via a variable deceleration parameter and tightly constrained by Hubble and Pantheon+ data, reproducing the deceleration-to-acceleration transition and approaching de Sitter expansion.