In f(R,Σ,T) gravity with logarithmic Om(z) parameterization, the model produces quintessence dark energy that drives acceleration without phantom crossing but exhibits classical instability.
This diagnos- tic tool helps in distinguishing between various classes of dark energy models by analyzing their phase space trajectories
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Dark Energy Phenomenology in a $f(R,\Sigma,T)$ Gravity Framework: $O_m(z)$ Parameterization Approach
In f(R,Σ,T) gravity with logarithmic Om(z) parameterization, the model produces quintessence dark energy that drives acceleration without phantom crossing but exhibits classical instability.