Ponente
Descripción
In this work, we employ a model-independent approach to jointly reconstruct the dark energy equation of state $w_\mathrm{DE}$ and the sum of neutrino masses $\sum m_\nu$.
We adopt the Piecewise Cubic Hermite Interpolating Polynomial (PCHIP) method with five fixed nodes in which we allow $w_\mathrm{DE}$ and $\sum m_\nu$ to vary. We employ CMB, BAO and SN data to constrain the values of $w_\mathrm{DE}$ and $\sum m_\nu$ at each node.
To gain a full understanding of the degeneracy between dark energy and neutrinos, we conduct three different analysis: one in which we only reconstruct $w_\mathrm{DE}$, fixing the sum of neutrino masses to 0.06 eV; one in which we reconstruct $w_\mathrm{DE}$ and we allow $\sum m_\nu$ to vary; finally, one in which we reconstruct both $w_\mathrm{DE}$ and $\sum m_\nu$ using the PCHIP method.
