Constraining crystalline color superconducting quark matter with gravitational-wave data

Abstract

We estimate the maximum equatorial ellipticity sustainable by compact stars composed of crystalline color-superconducting quark matter. For the theoretically allowed range of the gap parameter $\Delta$, the maximum ellipticity could be as large as $10^{-2}$, which is about 4 orders of magnitude larger than the tightest upper limit obtained by the recent science runs of the LIGO and GEO600 gravitational wave detectors based on the data from 78 radio pulsars. We point out that the current gravitational-wave strain upper limit already has some implications for the gap parameter. In particular, the upper limit for the Crab pulsar implies that $\Delta$ is less than O(20) MeV for a range of quark chemical potential accessible in compact stars, assuming that the pulsar has a mass $1.4M_{\odot }$, radius 10 km, breaking strain $10^{-3}$, and that it has the maximum quadrupole deformation it can sustain without fracturing.

Minor changes to match the published version

References in corpus (36)

• QCD at Finite Baryon Density: Nucleon Droplets and Color Superconductivity
• Color-Flavor Locking and Chiral Symmetry Breaking in High Density QCD
• Diquark Bose Condensates in High Density Matter and Instantons
• Data analysis of gravitational-wave signals from spinning neutron stars. I. The signal and its detection
• An exceptionally bright flare from SGR1806-20 and the origins of short-duration gamma-ray bursts
• Gravitational Radiation and Rotation of Accreting Neutron Stars
• The r-mode instability in rotating neutron stars
• Crystalline Color Superconductivity
• Deformations of Accreting Neutron Star Crusts and Gravitational Wave Emission
• Gravitational Waves from Neutron Stars with Large Toroidal B-fields
• Gravitational waves from instabilities in relativistic stars
• Maximum elastic deformations of compact stars with exotic equations of state
• Compact stars with color superconducting quark matter
• Upper limits on gravitational wave emission from 78 radio pulsars
• Moments of inertia for neutron and strange stars: limits derived for the Crab pulsar
• Solid Quark Stars?
• Limits on gravitational wave emission from selected pulsars using LIGO data
• Mountains on Neutron Stars: Accreted vs. Non-Accreted crusts
• The Ultimate Energy Density of Observable Cold Matter
• Gravitational Radiation from an Accreting Millisecond Pulsar with a Magnetically Confined Mountain
• Gravitational waves from freely precessing neutron stars
• The Crystallography of Three-Flavor Quark Matter
• Gravitational Wave Damping of Neutron Star Wobble
• Ginzburg-Landau approach to the three flavor LOFF phase of QCD
• The Influence of Quark Matter at High Densities on Binary Neutron Star Mergers
• Gravitational waves from pulsars: emission by the magnetic field induced distortion
• Testing the Ginzburg-Landau approximation for three-flavor crystalline color superconductivity
• The gravitational wave spectrum of non-axisymmetric, freely precessing neutron stars
• Gravitational Waves from Phase-Transition Induced Collapse of Neutron Stars
• Gravitational Waves from Phase Transition of Accreting Neutron Stars
• Neutrino emission from compact stars and inhomogeneous color superconductivity
• Phase Transitions in Neutron Stars and Gravitational Wave Emission
• Self-consistent evaluation of quark masses in three flavor crystalline color superconductivity
• Possible evolutionary transition from rapidly rotating neutron stars to strange stars due to spin-down
• Influence of finite quark chemical potentials on the three flavor LOFF phase of QCD
• Searching for gravitational waves from known pulsars

Cited by in corpus (34)

• Color superconductivity in dense quark matter
• Beating the spin-down limit on gravitational wave emission from the Crab pulsar
• Maximum elastic deformations of relativistic stars
• Beating the spin-down limit on gravitational wave emission from the Vela pulsar
• Searches for gravitational waves from known pulsars with S5 LIGO data
• First search for gravitational waves from the youngest known neutron star
• Searching for gravitational waves from Cassiopeia A with LIGO
• Interweaving Chiral Spirals
• Signature of gravitational radiation in afterglow of short Gamma-Ray Bursts?
• A directed search for continuous Gravitational Waves from the Galactic Center
• Equilibrium sequences of non rotating and rapidly rotating crystalline color superconducting hybrid stars
• EMMI Rapid Reaction Task Force Meeting on 'Quark Matter in Compact Star'
• Gravitational radiation from crystalline color-superconducting hybrid stars
• Developing a model for neutron star oscillations following starquakes
• Gravitational wave background from sub-luminous GRBs: prospects for second and third generation detectors
• Prospects of observing continuous gravitational waves from known pulsars
• Tidal deformations of compact stars with crystalline quark matter
• Gravitational Waves From Low Mass Neutron Stars
• Gravitational waves from color-magnetic `mountains' in neutron stars
• Probing hybrid stars with gravitational waves via interfacial modes
• Implementation of the frequency-modulated sideband search method for gravitational waves from low mass X-ray binaries
• Phase diagram of chiral quark matter: Fulde-Ferrell pairing from weak to strong coupling
• Two-layer compact stars with crystalline quark matter: Screening effect on the tidal deformability
• Quark matter in neutron stars
• Electromagnetic signals from bare strange stars
• How photon astronomy affects searches for continuous gravitational waves
• Torsional oscillations of crystalline color-superconducting hybrid stars: Possible sources for Advanced LIGO?
• New color-magnetic defects in dense quark matter
• The shear viscosity of two-flavor crystalline color superconducting quark matter
• Possible evidence that pulsars are quark stars
• Love-C relations for elastic hybrid stars
• The amazing properties of crystalline color superconductors
• Multicomponent Superfluids and Superconductors in Dense Nuclear and Quark Matter
• The rigidity of three flavor quark matter