Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Pinto, Marcus Benghi"'
Publikováno v:
Phys. Rev. D 110, 056048 (2024)
It is known that the Fierz identities predict that the Gross-Neveu and Thirring models should be equivalent when describing systems composed of a single fermionic flavor, $N=1$. Here, we consider the planar version of both models within the framework
Externí odkaz:
http://arxiv.org/abs/2407.03480
Publikováno v:
Phys. Rev. B 108, 085107 (2023)
We analyze the possible dynamical chiral symmetry breaking patterns taking place within Weyl type of materials. Here, these systems are modeled by the (2+1)-dimensional Gross-Neveu model with a tilt in the Dirac cone. The optimized perturbation theor
Externí odkaz:
http://arxiv.org/abs/2305.09007
Publikováno v:
Phys. Rev. D 107, 114015 (2023)
The recently developed resummation technique known as {\it renormalization group optimized perturbation theory} (RGOPT) is employed in the evaluation of the EoS describing non-strange cold quark matter at NLO. Inspired by recent investigations, which
Externí odkaz:
http://arxiv.org/abs/2212.11184
Autor:
Pinto, Marcus Benghi
Neutron star constraints and {\it ab initio} pQCD evaluations require the EoS representing cold quark matter to be stiff at intermediate baryonic densities and soft at high-$n_B$. Here, I suggest that the three flavor NJL model with a density depende
Externí odkaz:
http://arxiv.org/abs/2211.11071
Autor:
Pinto, Marcus Benghi
Considering the NJL model with a repulsive vector channel, parametrized by $G_V$, I show that one may generate a non-monotonic behavior for the speed of sound which peaks at $V_s^2 > 1/3$. This can be achieved by assuming $G_V$ to be density dependen
Externí odkaz:
http://arxiv.org/abs/2208.06911
Publikováno v:
JHEP 08 (2022) 028
We analyze the possible quantum phase transition patterns occurring within the $O(N) \times {\mathbb{Z}_2}$ scalar multi-field model at vanishing temperatures in $(1+1)$-dimensions. The physical masses associated with the two coupled scalar sectors a
Externí odkaz:
http://arxiv.org/abs/2205.04912
We apply the optimized perturbation theory (OPT) to resum the perturbative series describing the mass gap of the bidimensional $\phi^4$ theory in the $\mathbb{Z}_2$ symmetric phase. Already at NLO (one loop) the method is capable of generating a quit
Externí odkaz:
http://arxiv.org/abs/2103.00354
Publikováno v:
Phys. Rev. D 104, 034003 (2021)
We apply the renormalization group optimized perturbation theory (RGOPT) to evaluate the quark contribution to the QCD pressure at finite temperatures and baryonic densities, at next-to-leading order (NLO). Our results are compared to NLO and state-o
Externí odkaz:
http://arxiv.org/abs/2101.08240
Publikováno v:
Phys. Rev. D 104, 031502 (2021)
The quark contribution to the QCD pressure, $P_q$, is evaluated up to next-to-leading order (NLO) within the renormalization group optimized perturbation theory (RGOPT) resummation approach. To evaluate the complete QCD pressure we simply add the per
Externí odkaz:
http://arxiv.org/abs/2101.02124
Autor:
Pinto, Marcus Benghi
Publikováno v:
Phys. Rev. D 102, 065005 (2020)
The massless three dimensional Gross-Neveu-Yukawa (GNY) and Nambu--Jona-Lasinio--Yukawa (NJLY) models at finite temperatures are analyzed within the mean field framework considering all coupling values. When the number of Dirac fermions is taken to b
Externí odkaz:
http://arxiv.org/abs/2007.03784