Strangelets at finite temperature: nucleon emission rates, interface and shell effects
arXiv:2310.14323 · doi:10.1103/PhysRevD.109.034003
Abstract
We investigate the properties of strangelets at finite temperature , where an equivparticle model is adopted with both the linear confinement and leading-order perturbative interactions accounted for using density-dependent quark masses. The shell effects are examined by solving the Dirac equations for quarks in the mean-field approximation, which diminish with temperature as the occupation probability of each single-particle levels fixed by the Fermi-Dirac statistics, i.e., shell dampening. Consequently, instead of decreasing with temperature, the surface tension extracted from a liquid-drop formula increases with until reaching its peak at -40 MeV with vanishing shell corrections, where the formula roughly reproduces the free energy per baryon of all strangelets. The curvature term, nevertheless, decreases with despite the presence of shell effects. The neutron and proton emission rates are fixed microscopically according to the external nucleon gas densities that are in equilibrium with strangelets, which generally increase with ( MeV) for stable strangelets but decrease for those that are unstable against nucleon emission at . The energy, free energy, entropy, charge-to-mass ratio, strangeness per baryon, and root-mean-square radius of -stable strangelets obtained with various parameter sets are presented as well. The results indicated in this work are useful for understanding the products of binary compact star mergers and heavy-ion collisions.
References in corpus (52)
- Solid Quark Stars?
- Very Small Strangelets
- Thermodynamics, strange quark matter, and strange stars
- Strange quark matter with dynamically generated quark masses
- Vector interaction enhanced bag model for astrophysical applications
- The Strange Star Surface: A Crust with Nuggets
- Shell model versus liquid drop model for strangelets
- Quark matter may not be strange
- Mass Ejection by Strange Star Mergers and Observational Implications
- Mass formulas and thermodynamic treatment in the mass-density-dependent model of strange quark matter
- Thermodynamics with density and temperature dependent particle masses and properties of bulk strange quark matter and strangelets
- The Surface Tension of Quark Matter in a Geometrical Approach
- The Stability of Strange Star Crusts and Strangelets
- Thermodynamic consistency, quark mass scaling, and properties of strange matter
- Strangelet propagation and cosmic ray flux
- Phase diagram and surface tension in the three-flavor Polyakov-quark-meson model
- Unified Interacting Quark Matter and its Astrophysical Implications
- Heating (Gapless) Color-Flavor Locked Quark Matter
- Stability of strangelet at finite temperature
- Do the current astronomical observations exclude the existence of non-strange quark stars?
- Interface Tension and Interface Entropy in 2+1 Flavour Nambu-Jona-Lasino Model
- Probing up-down quark matter via gravitational waves
- Surface tension of hot and dense quark matter under strong magnetic fields
- Merging Strangeon Stars
- New solutions for the color-flavor locked strangelets
- Compact Ultra Dense Matter Impactors
- Interacting and quark matter at finite densities and quark stars
- Strangelets: Who is Looking, and How?
- GW190814: Circumstantial Evidence for Up-Down Quark Star
- Surprises from the search for quark-gluon plasma? When was quark-gluon plasma seen?
- Primordial nuggets survival and QCD pairing
- Color-flavor locked strangelets and their detection
- Surface effects in color superconducting strange-quark matter
- Charge, strangeness and radius of strangelets
- Interface effects of strange quark matter with density dependent quark masses
- Finite size effects in strongly interacting matter at zero chemical potential from Polyakov loop Nambu-Jona-Lasinio model in the light of lattice data
- Strangeon and Strangeon Star
- Non-strange quark stars within resummed QCD
- Surface and curvature properties of charged strangelets in compact objects
- A bag model of matter condensed by the strong interaction
- Interface effects of quark matter: Light-quark nuggets and compact stars
- Strong Matter: Rethinking Philosophically
- Strangelet spectra from type II supernovae
- Strangelets at finite temperature
- Merging strangeon stars II: the ejecta and light curves
- Rescaling strange-cluster stars and its implications on gravitational-wave echoes
- Structure formation during phase transitions in strongly interacting matter
- Microscopic description of neutron emission rates in compound nuclei
- Strangelets at finite temperature in an equivparticle model
- Deformed Strangelets at Finite Temperature
- Trinity of Strangeon Matter
- Interface effects of strange quark matter