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At sufficiently high densities, cold dense three-flavor quark matter is in the color-flavor locked (CFL) phase, in which all nine quarks pair in a particularly symmetric fashion. Once the heaviness of the strange quark (mass $m_s$) and the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Krishna Rajagopal , Andreas Schmitt

We investigate the effects of the dynamical formation of the chiral condensates on color superconducting phases under the electric and color neutrality constraints at vanishing temperature. We shall show that the phase appearing next to the…

High Energy Physics - Phenomenology · Physics 2009-11-10 H. Abuki , M. Kitazawa , T. Kunihiro

We use a Nambu-Jona Lasinio type model to investigate the phase diagram of dense quark matter under neutron star conditions in mean field approximation. The model contains selfconsistently determined quark masses and allows for diquark…

High Energy Physics - Phenomenology · Physics 2010-04-21 Hannes Basler , Michael Buballa

We review the mechanisms via which an external magnetic field can affect the ground state of cold and dense quark matter. In the absence of a magnetic field, at asymptotically high densities, cold quark matter is in the Color-Flavor-Locked…

Nuclear Theory · Physics 2015-06-11 Efrain J. Ferrer , Vivian de la Incera

The properties of strange quark stars are studied within the quasi-particle model. Taking into account the chemical equilibrium and charge neutrality, the EOS of $ (2+1) $-flavor quark matter is obtained. We illustrate the parameter spaces…

High Energy Physics - Phenomenology · Physics 2020-11-10 Wen-Hua Cai , Qing-Wu Wang

We study the $S$-wave mass spectra of flavor exotic triply-heavy tetraquark states $cc\bar{c}\bar{q}$, $cc\bar{b}\bar{q}$, $bb\bar{c}\bar{q}$ and $bb\bar{b}\bar{q}$. We adopt a diquark-antidiquark scheme to solve Schr\"{o}dinger equation.…

High Energy Physics - Phenomenology · Physics 2023-05-08 Halil Mutuk

We present the Taylor expansion coefficients of the pressure in quark number chemical potential $\mu_0=\mu_B / 3=\mu_u=\mu_d$, for the strongly interacting matter as described by the PNJL model for two light degenerate flavours of quarks u…

High Energy Physics - Phenomenology · Physics 2008-11-26 Sanjay K. Ghosh , Tamal K. Mukherjee , Munshi G. Mustafa , Rajarshi Ray

We report a new equation of state (EoS) of cold and hot hyperonic matter constructed in the framework of the quark-meson-coupling (QMC-A) model. The QMC-A EoS yields results compatible with available nuclear physics constraints and…

Nuclear Theory · Physics 2021-05-03 J. R. Stone , V. Dexheimer , P. A. M. Guichon , A. W. Thomas , S. Typel

The dynamical scenario is considered for N=1 SQCD, with N_c colors and N_c<N_F<3N_c flavors with small but nonzero current quark masses m_Q\neq 0, in which quarks form the diquark-condensate phase. This means that colorless chiral quark…

High Energy Physics - Theory · Physics 2010-05-12 Victor L. Chernyak

Instantons generate strong non-perturbative interactions between quarks. In the vacuum, these interactions lead to chiral symmetry breaking and generate constituent quark masses on the order of 300-400 MeV. The observation that the same…

High Energy Physics - Phenomenology · Physics 2009-10-31 R. Rapp , T. Schaefer , E. V. Shuryak , M. Velkovsky

In this paper, the equation of state (EOS) of deconfined quark stars is studied in the framework of the two-flavor NJL model, and the self-consistent mean field approximation is employed by introducing a parameter $\alpha$ combining the…

Nuclear Theory · Physics 2021-05-11 Li-Qun Su , Yan Yan , Cheng-Ming Li , Yong-Feng Huang , Hongshi Zong

We construct a model for dense matter based on low-density nuclear matter properties that exhibits a chiral phase transition and that includes strangeness through hyperonic degrees of freedom. Empirical constraints from nuclear matter alone…

Nuclear Theory · Physics 2022-09-28 Eduardo S. Fraga , Rodrigo da Mata , Savvas Pitsinigkos , Andreas Schmitt

We study QCD with two flavours of colour-sextet quarks as a candidate walking-Technicolor theory. We simulate lattice QCD with two flavours of colour-sextet staggered quarks at finite temperatures to observe the scales of confinement and…

High Energy Physics - Lattice · Physics 2010-11-05 D. K. Sinclair , J. B. Kogut

We investigate the rotating quark matter in the three-flavor Nambu and Jona-Lasinio (NJL) model. The chiral condensation, spin polarization and number susceptibility of the light and strange quarks are carefully studied at finite…

High Energy Physics - Phenomenology · Physics 2021-11-24 Fei Sun , Anping Huang

We present a first step in developing a benchmark equation-of-state (EoS) model for multi-messenger astronomy that unifies the thermodynamics of quark and hadronic degrees of freedom. A Lagrangian approach to the thermodynamic potential of…

High Energy Astrophysical Phenomena · Physics 2020-11-11 Michał Marczenko , David Blaschke , Krzysztof Redlich , Chihiro Sasaki

We determine characteristic timescales for the viscous damping of r-mode oscillations in rapidly rotating compact stars that contain quark matter. We present results for the color-flavor-locked (CFL) phase of dense quark matter, in which…

Nuclear Theory · Physics 2010-04-15 Prashanth Jaikumar , Gautam Rupak , Andrew W. Steiner

Perturbative Quantum Chromodynamics corrections and the colour superconductivity indicate that strongly interacting matter can manifest unique physical behaviours under extreme conditions. Motivated by this notion, we investigate the…

General Relativity and Quantum Cosmology · Physics 2025-01-22 Debadri Bhattacharjee , Koushik Ballav Goswami , Pradip Kumar Chattopadhyay

We study a spin-1 single flavor color superconducting phase which results from a color-spin locking (CSL) interaction in two-flavor quark matter. This phase is particularly interesting for compact star cooling applications since the CSL…

High Energy Physics - Phenomenology · Physics 2009-11-11 D. N. Aguilera , D. Blaschke , M. Buballa , V. L. Yudichev

We present results of simulations of Two Color QCD using two flavors of Wilson quark in the fundamental representation, at non-zero quark chemical potential mu, on an 8^3x16 lattice. Results for the quark number density, quark and gluon…

High Energy Physics - Lattice · Physics 2007-05-23 Simon Hands , Seyong Kim , Jon-Ivar Skullerud

We describe charge-neutral neutron star matter in $\beta-$equilibrium using hybrid equations of state, where a first-order phase transition from hadronic to quark matter is realized. The hadronic matter is described in a model-independent…

Nuclear Theory · Physics 2020-07-21 Márcio Ferreira , Renan Câmara Pereira , Constança Providência