Third-Generation Ground-Based Forecast: Einstein Telescope and Cosmic Explorer Reach for Bounce Spectra

This study computes a specific gravitational-wave consequence of a torsion-regulated bounce in Einstein-Cartan gravity, taking the limiting density for neutron matter, 9.72e+54 grams per cubic centimetre under the stated prescription, as its single input scale. Third-generation ground-based detectors improve stochastic sensitivity by orders of magnitude; this forecast states which bounce spectra that improvement actually reaches and which it still does not. The headline results of the computation are: fiducial_Omega_25Hz = 6.25e-08, fiducial_margin_ET = 6.25e+04, fiducial_margin_CE = 2.08e+05, ET_floor = 1.00e-12, CE_floor = 3.00e-13. Each quantity is evaluated by the deposited script from the assumptions stated in the Methods, and the agreement or disagreement of each quantity with published observational bounds is reported at face value, including where the conclusion is that the channel examined is closed. The study is simulated and computed from stated assumptions; it is not a measurement, and no observational data were taken for it.