QGEM signals show stable hierarchy ADD > gapped continuum > RSII at submillimeter distances, with normalized phase profiles discriminating RSII from the other two models.
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Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale
12 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We conducted three torsion-balance experiments to test the gravitational inverse-square law at separations between 9.53 mm and 55 micrometers, probing distances less than the dark-energy length scale $\lambda_{\rm d}=\sqrt[4]{\hbar c/\rho_{\rm d}}\approx 85 \mu$m. We find with 95% confidence that the inverse-square law holds ($|\alpha| \leq 1$) down to a length scale $\lambda = 56 \mu$m and that an extra dimension must have a size $R \leq 44 \mu$m.
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representative citing papers
Neutron stars yield tighter bounds on muonic scalar and vector fifth forces (g_φμ ≲ 10^{-12}, g_Vμ ≲ 3×10^{-13} for m_X ≲ 100 keV) than SN 1987A, plus hydrostatic constraints for long-range cases.
UV completeness in scalar-tensor gravity restricts Yukawa fifth-force parameters α and λ to a finite wedge whose complement is ruled out, with part of the excluded domain below current experimental bounds.
Multi-axion solutions to the strong CP problem produce varied mass-coupling patterns set by PQ symmetry breaking structure and QCD-EM anomaly alignment, summarized by a general sum rule for N-axion systems.
Quadratic gravity with Weyl-squared and Ricci-squared terms produces PPN parameters that equal their GR values except for exponentially decaying corrections, with gamma identically 1 when the two mode masses are equal, yielding solar-system lower bounds m_R, m_W greater than or equal to 23 per AU.
Quadratic curvature gravity on Einstein manifolds decouples into massless and non-Fierz-Pauli massive gravity sectors, enabling observational constraints on its parameters with noted tension for the Weyl term.
Torsion-bar detector with differential mass cancellation reaches |α_Y| = 2.4×10^{-5} at λ = 8 m for Yukawa gravity deviations, limited by source-mass geometry uncertainties after ~26 hours.
Braneworld effects cause primordial black holes to accrete matter far more efficiently in the early universe, producing present-day masses up to 10^5 times larger than previous estimates for the smallest allowed fundamental Planck scale.
Gravitational dark matter candidates with masses in [10^{-3}, 1] eV could produce a measurable effective time variation of the proton mass with future atomic clocks.
Proposes gravitational redshift measurements with atomic clocks in varying density environments to constrain the parameter space of the environment-dependent dilaton model, focusing on regions with weak couplings complementary to existing tests.
Experiments confirm general relativity to high precision in weak-field and strong-field regimes, with gravitational wave damping matching predictions to better than 0.5 percent.
citing papers explorer
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Entanglement probes of gravitational Kaluza-Klein spectra: signal hierarchy and model discrimination
QGEM signals show stable hierarchy ADD > gapped continuum > RSII at submillimeter distances, with normalized phase profiles discriminating RSII from the other two models.
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Neutron Star Bounds on Muonic Fifth Forces from Picometer to Kilometer Scales
Neutron stars yield tighter bounds on muonic scalar and vector fifth forces (g_φμ ≲ 10^{-12}, g_Vμ ≲ 3×10^{-13} for m_X ≲ 100 keV) than SN 1987A, plus hydrostatic constraints for long-range cases.
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Fifth-Force Constraints from UV-Complete Scalar-Tensor Gravity
UV completeness in scalar-tensor gravity restricts Yukawa fifth-force parameters α and λ to a finite wedge whose complement is ruled out, with part of the excluded domain below current experimental bounds.
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The structure of multi-axion solutions to the strong CP problem
Multi-axion solutions to the strong CP problem produce varied mass-coupling patterns set by PQ symmetry breaking structure and QCD-EM anomaly alignment, summarized by a general sum rule for N-axion systems.
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Parameterized Post-Newtonian Analysis of Quadratic Gravity and Solar System Constraints
Quadratic gravity with Weyl-squared and Ricci-squared terms produces PPN parameters that equal their GR values except for exponentially decaying corrections, with gamma identically 1 when the two mode masses are equal, yielding solar-system lower bounds m_R, m_W greater than or equal to 23 per AU.
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Non-Fierz-Pauli bimetric theory from quadratic curvature gravity on Einstein manifolds
Quadratic curvature gravity on Einstein manifolds decouples into massless and non-Fierz-Pauli massive gravity sectors, enabling observational constraints on its parameters with noted tension for the Weyl term.
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Probing Yukawa Gravity with Modulated Newtonian Cancellation in the CHRONOS Detector
Torsion-bar detector with differential mass cancellation reaches |α_Y| = 2.4×10^{-5} at λ = 8 m for Yukawa gravity deviations, limited by source-mass geometry uncertainties after ~26 hours.
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Cosmological accretion onto braneworld black holes: a relativistic treatment
Braneworld effects cause primordial black holes to accrete matter far more efficiently in the early universe, producing present-day masses up to 10^5 times larger than previous estimates for the smallest allowed fundamental Planck scale.
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On Searches for Gravitational Dark Matter with Quantum Sensors
Gravitational dark matter candidates with masses in [10^{-3}, 1] eV could produce a measurable effective time variation of the proton mass with future atomic clocks.
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Prospect on constraining environment-dependent dilaton model from gravitational redshift measurements
Proposes gravitational redshift measurements with atomic clocks in varying density environments to constrain the parameter space of the environment-dependent dilaton model, focusing on regions with weak couplings complementary to existing tests.
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The Confrontation between General Relativity and Experiment
Experiments confirm general relativity to high precision in weak-field and strong-field regimes, with gravitational wave damping matching predictions to better than 0.5 percent.
- Scalaron dark matter dynamics: effects of Higgs non-minimal coupling to gravity