Nonstrange quark stars within resummed QCD

The recently developed resummation technique known as {\it renormalization group optimized perturbation theory} (RGOPT) is employed in the evaluation of EoS describing non-strange cold quark matter at NLO. Inspired by recent investigations, which suggest that stable can be made only up and down quarks, mass-radius relation for two flavor pure stars evaluated compared with predictions from perturbative QCD (pQCD) NNLO. This comparison explicitly shows being imbued properties, a variational optimization procedure, method allows an efficient series. Remarkably, when scale chosen so to reproduce maximum mass M=$2-2.3M_\odot$, one obtains curve compatible masses radii pulsars PSR J0740+6620, J0030+0451, compact object HESS J1731-347. Moreover, dependence (and relation) obtained RGOPT greatly improved pQCD. seminal application description represents robust alternative pQCD compressed matter.