Signatures for quark matter from multi-messenger observations
@article{Alford2019SignaturesFQ, title={Signatures for quark matter from multi-messenger observations}, author={Mark G. Alford and Sophia Han and K. Schwenzer}, journal={Journal of Physics G: Nuclear and Particle Physics}, year={2019} }
We review the prospects for detecting quark matter in neutron star cores. We survey the proposed signatures and emphasize the importance of data from neutron star mergers, which provide access to dynamical properties that operate on short timescales that are not probed by other neutron star observables.
32 Citations
Searching for Exotic Cores with Binary Neutron Star Inspirals
- PhysicsThe Astrophysical Journal
- 2020
We study the feasibility of detecting exotic cores in merging neutron stars with ground-based gravitational-wave detectors. We focus on models with a sharp nuclear/exotic matter interface, and assume…
Light scalars in neutron star mergers
- PhysicsJournal of Cosmology and Astroparticle Physics
- 2022
Due to their unique set of multimessenger signals, neutron star mergers have emerged as a novel environment for studies of new physics beyond the Standard Model (SM). As a case study, we consider the…
Studying strong phase transitions in neutron stars with gravitational waves
- PhysicsPhysical Review D
- 2020
The composition of neutron stars at the extreme densities reached in their cores is currently unknown. Besides nuclear matter of normal neutrons and protons, the cores of neutron stars might harbor…
Treating quarks within neutron stars
- PhysicsPhysical Review D
- 2019
Neutron star interiors provide the opportunity to probe properties of cold dense matter in the QCD phase diagram. Utilizing models of dense matter in accord with nuclear systematics at nuclear…
Neutron stars with large quark cores
- Physics
- 2020
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…
Delta baryons and diquark formation in the cores of neutron stars
- Physics
- 2020
We investigate the hadron-quark phase transition in cold neutron stars in light of (i) the observed limits on the maximum-mass of heavy pulsars, (ii) constraints on the tidal properties inferred from…
Equation of State Constraints from the Threshold Binary Mass for Prompt Collapse of Neutron Star Mergers.
- PhysicsPhysical review letters
- 2020
Considering hybrid EOSs with hadron-quark phase transition, a new, observable signature of quark matter in NS mergers is identified, which has direct applications in gravitational wave searches, kilonova interpretations, and multimessenger constraints on NS properties.
Transport in neutron star mergers
- Physics
- 2020
After an introduction to the QCD phase diagram, the nuclear equations of state, and neutron star mergers, I discuss three projects related to transport and nuclear matter in neutron star mergers. The…
Strangeness-changing rates and hyperonic bulk viscosity in neutron star mergers
- Physics
- 2021
In this paper we present a computation of the rates of strangeness-changing processes and the resultant bulk viscosity in matter at the densities and temperatures typical of neutron star mergers. To…
References
SHOWING 1-10 OF 198 REFERENCES
Direct URCA process in neutron stars.
- PhysicsPhysical review letters
- 1991
We show that the direct URCA process can occur in neutron stars if the proton concentration exceeds some critical value in the range 11--15%. The proton concentration, which is determined by the…
Region of hadron-quark mixed phase in hybrid stars
- Physics
- 2011
Hadron-quark mixed phase is expected in a wide region of the inner structure of hybrid stars. However, we show that the hadron-quark mixed phase should be restricted to a narrower region because of…
Signatures of Quark-Hadron Phase Transitions in General-Relativistic Neutron-Star Mergers.
- PhysicsPhysical review letters
- 2019
This work presents the first fully general-relativistic simulations of merging neutron-stars including quarks at finite temperatures that can be switched off consistently in the equation of state and shows that the phase transition leads to a very hot and dense quark core that, when it collapses to a black hole, produces a ringdown signal different from the hadronic one.
Constraints on neutron star radii based on chiral effective field theory interactions.
- PhysicsPhysical review letters
- 2010
We show that microscopic calculations based on chiral effective field theory interactions constrain the properties of neutron-rich matter below nuclear densities to a much higher degree than is…
Neutron Skins and Neutron Stars in the Multimessenger Era.
- PhysicsPhysical review letters
- 2018
A set of realistic models of the equation of state (EOS) that yield an accurate description of the properties of finite nuclei, support neutron stars of two solar masses, and provide a Lorentz covariant extrapolation to dense matter are used to confront its predictions against tidal polarizabilities extracted from the gravitational-wave data.
How long-range interactions tune the damping in compact stars
- Physics
- 2012
Long-range interactions lead to non-Fermi liquid effects in dense matter. We show that, in contrast to other material properties, their effect on the bulk viscosity of quark matter is significant…
Neutron star universal relations with microscopic equations of state
- PhysicsJournal of Physics G: Nuclear and Particle Physics
- 2019
We calculate neutron star's moment of inertia and deformabilities using various microscopic equations of state for nuclear and hybrid star configurations. Correlations between the various observables…
Shapiro delay measurement of a two solar mass neutron star
- Physics
- 2010
Neutron stars are composed of the densest form of matter known to exist in our universe, and thus provide a unique laboratory for exploring the properties of cold matter at supranuclear density.…
NEUTRINO EMISSION FROM COOPER PAIRS AND MINIMAL COOLING OF NEUTRON STARS
- Physics
- 2009
The minimal cooling paradigm for neutron star cooling assumes that enhanced cooling due to neutrino emission from any direct Urca process, due either to nucleons or to exotica such as hyperons, Bose…
Binary neutron star mergers: a review of Einstein’s richest laboratory
- PhysicsReports on progress in physics. Physical Society
- 2017
The recent progress in understanding what could be considered Einstein's richest laboratory is reviewed, highlighting in particular the numerous significant advances of the last decade in models, techniques and results for fully general-relativistic dynamical simulations.