REVIEW 6 cited by
Cosmic Superstrings Revisited in Light of NANOGrav 15-Year Data
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
abstract
We analyze cosmic superstring models in light of NANOGrav 15-year pulsar timing data. A good fit is found for a string tension $G \mu \sim 10^{-12} - 10^{-11}$ and a string intercommutation probability $p \sim 10^{-3} - 10^{-1}$. Extrapolation to higher frequencies assuming standard Big Bang cosmology is compatible at the 68\% CL with the current LIGO/Virgo/KAGRA upper limit on a stochastic gravitational wave background in the 10 to 100 Hz range. The superstring interpretation of the NANOGrav data would be robustly testable by future experiments even in modified cosmological scenarios.
Forward citations
Cited by 6 Pith papers
-
Pulsar Timing Sensitivity to Dark Matter Substructure in the Presence of a Stochastic Gravitational-Wave Background
A stochastic GWB suppresses PTA reach to DM substructure by 1–3 orders of magnitude relative to white-noise forecasts, with dynamic Shapiro least affected near 10^{-2} M_⊙.
-
Formation and scaling of $\mathbb{Z}_N$ strings for global $\mathrm{SU}(N)/\mathbb{Z}_N$ symmetry
In a global SU(N)/Z_N scalar model, Z_N-string networks with baryon-vertex-like junctions reach a scaling regime for N=2,3,4,5,8, with string density proportional to N^2-1.
-
From new physics to a running power law and back again: Minimal refitting techniques for the reconstruction of the gravitational-wave background signal in pulsar timing array data
A new refitting technique maps any gravitational-wave background spectrum onto a running-power-law reference model via sensitivity-weighted chi-squared minimization, and uses the pullback of the reference posterior to...
-
Detection of cosmic strings by gravitational wave lensing. Predictions for Einstein Telescope
Simulated cosmic-string lensing of binary black holes predicts Einstein Telescope would detect the events and infer Gµ ≈ 1e-10, though the source geometry is assumed ad hoc.
-
Beyond the Daisy Chain: Running and the 3D EFT View of Supercooled Phase Transitions
With renormalisation-group running included, the one-loop high-temperature Daisy-resummed potential at µ=πT reproduces the phase-transition parameters of the two-loop dimensionally reduced EFT, while the no-running on...
-
NANOGrav 15-year gravitational-wave signals from binary supermassive black-holes seeded by primordial black holes, and implications for the origins of Little Red Dots
A PBH abundance of 10^-14–10^-12 of CDM, with seed masses 1–10^3 M_sun, is fitted to the NANOGrav 15-year background via SMBH mergers, consistent with 21-cm limits.
Discussion (0). Sign in to comment.