Results 111 to 120 of about 41,225 (263)

Six Weeks of Low‐Volume Sprint Interval Training Improves Peak Oxygen Uptake Compared to a Non‐Exercise Control: A Randomized Controlled Trial

open access: yesScandinavian Journal of Medicine &Science in Sports, Volume 35, Issue 9, September 2025.
ABSTRACT Low‐volume sprint interval training (LVSIT) increases peak oxygen uptake (VO2peak) when performed three times a week for 6 weeks. Methodological and statistical concerns, however, constrain the veracity of prior findings. We therefore reassessed the VO2peak response to LVSIT using a randomized controlled trial design to mitigate bias and ...
John R. M. Renwick   +8 more
wiley   +1 more source

Hadron-quark phase transition in the neutron star with vector MIT bag model and Korea-IBS-Daegu-SKKU functional

open access: yesFrontiers in Astronomy and Space Sciences
Employing the Korea-IBS-Daegu-SKKU (KIDS) density functional for the hadron phase and the MIT bag model with vector (vBag) model for the quark phase, we obtain hadron-quark phase transition in neutron stars considering Maxwell construction.
Debashree Sen, Hana Gil, Chang Ho Hyun
doaj   +1 more source

Neutron stars velocities and magnetic fields

open access: yesEPJ Web of Conferences, 2018
We study a model that explain neutron stars velocities due to the anisotropic emission of neutrinos. Strong magnetic fields present in neutron stars are the source of the anisotropy in the system.
Paret Daryel Manreza   +4 more
doaj   +1 more source

Quark matter and quark stars at finite temperature in Nambu–Jona-Lasinio model

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
We extend the SU(3) Nambu–Jona-Lasinio (NJL) model to include two types of vector interaction. Using these two types of vector interaction in NJL model, we study the quark symmetry free energy in asymmetric quark matter, the constituent quark mass, the ...
Peng-Cheng Chu   +6 more
doaj   +1 more source

Extended quark mean-field model for neutron stars

open access: yes, 2014
We extend the quark mean-field (QMF) model to strangeness freedom to study the properties of hyperons ($\Lambda,\Sigma,\Xi$) in infinite baryon matter and neutron star properties.
Hu, J. N.   +4 more
core   +1 more source

Quark neutron layer stars

open access: yesThe Astrophysical Journal, 1993
Typical nuclear equations of state and a quark bag model, surprisingly, allow compact stars with alternate layers of neutrons and quarks. One can determine on the basis of the Gibbs free energy which phase, nuclear or quark, is energetically favorable.
openaire   +4 more sources

Rotating Quark Stars in General Relativity

open access: yesUniverse, 2018
We have built quasi-equilibrium models for uniformly rotating quark stars in general relativity. The conformal flatness approximation is employed and the Compact Object CALculator (cocal) code is extended to treat rotating stars with surface density ...
Enping Zhou   +4 more
doaj   +1 more source

Quark stars in $$D_3$$ D 3 – $$D_7$$ D 7 holographic model

open access: yesEuropean Physical Journal C: Particles and Fields
This work investigates static and dynamical quark star properties within a $$D_3{-}D_7$$ D 3 - D 7 holographic model. We solve the Tolman–Oppenheimer–Volkoff equations for the quark matter equation of state obtained from the brane configuration.
M. Aleixo   +3 more
doaj   +1 more source

Impact of the Nuclear Equation of State on the Stability of Hybrid Neutron Stars

open access: yesUniverse, 2019
We construct a set of equations of state (EoS) of dense and hot matter with a 1st order phase transition from a hadronic system to a deconfined quark matter state. In this two-phase approach, hadrons are described using the relativistic mean field theory
Mateusz Cierniak   +4 more
doaj   +1 more source

Diquark condensation effects on hot quark star configurations

open access: yes, 2004
The equation of state for quark matter is derived for a nonlocal, chiral quark model within the mean field approximation.We investigate the effects of a variation of the formfactors of the interaction on the phase diagram of quark matter.
A.M. Öztaş   +44 more
core   +2 more sources

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