Quark deconfinement in compact stars through sexaquark condensation
arXiv:2202.05061 · doi:10.1142/9789811220913_0008
Abstract
In this contribution, we present for the first time a scenario according to which early quark deconfinement in compact stars is triggered by the Bose-Einstein condensation (BEC) of a light sexaquark (S) with a mass MeV, that has been suggested as a candidate particle to explain the baryonic dark matter in the Universe. The onset of S BEC marks the maximum mass of hadronic neutron stars and it occurs when the condition for the baryon chemical potential is fulfilled in the center of the star, corresponding to . In the gravitational field of the star the density of the BEC of the S increases until a new state of the matter is attained, where each of the S-states got dissociated into a triplet of color-flavor-locked (CFL) diquark states. These diquarks are the Cooper pairs in the color superconducting CFL phase of quark matter, so that the developed scenario corresponds to a BEC-BCS transition in strongly interacting matter. For the description of the CFL phase, we develop here for the first time the three-flavor extension of the density-functional formulation of a chirally symmetric Lagrangian model of quark matter where confining properties are encoded in a divergence of the scalar self-energy at low densities and temperatures.
arXiv comment27 pages, 8 figures, Contribution to the Book "New Phenomena and New States of Matter in the Universe. From Quarks to Cosmos" edited by C. A. Z. Vasconcellos, P. O. Hess and T. Boller
References in corpus (30)
- Planck 2015 results. XIII. Cosmological parameters
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- A Massive Pulsar in a Compact Relativistic Binary
- GW170817: Measurements of Neutron Star Radii and Equation of State
- PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
- Equations of state for supernovae and compact stars
- Gravitational-wave constraints on the neutron-star-matter Equation of State
- Composition and thermodynamics of nuclear matter with light clusters
- Hybrid stars that masquerade as neutron stars
- Chiral crossover in QCD at zero and non-zero chemical potentials
- Constraints on the high-density nuclear equation of state from the phenomenology of compact stars and heavy-ion collisions
- The hadron-quark phase transition in dense matter and neutron stars
- Relativistic model for nuclear matter and atomic nuclei with momentum-dependent self-energies
- Modern compact star observations and the quark matter equation of state
- Implications of the measurement of pulsars with two solar masses for quark matter in compact stars and HIC. A NJL model case study
- Constraining the equation of state of high-density cold matter using nuclear and astronomical measurements
- A new temperature dependent hyperonic equation of state: application to rotating neutron star models and I-Q-relations
- Quark-Nuclear Hybrid EoS with Excluded Volume Effects
- First-order phase transition from hypernuclear matter to deconfined quark matter obeying new constraints from compact star observations
- Sexaquark dilemma in neutron stars and its solution by quark deconfinement
- Effective repulsion in dense quark matter from non-perturbative gluon exchange
- Sequential deconfinement of quark flavors in neutron stars
- The Radius of PSR J0740+6620 from NICER and XMM-Newton Data
- Dark Matter in the Standard Model?
- Nuclear and nucleon transitions of the H di-baryon
- Non-binding of Flavor-Singlet Hadrons to Nuclei
- Dark Matter Particle in QCD
- Stable Sexaquark
- Confining density functional approach for color superconducting quark matter and mesonic correlations
- Strange matter in compact stars