Lorentz Violation with Gravitational Waves: Constraints from NANOGrav and IPTA Data
arXiv:2505.22736 · doi:10.1016/j.jheap.2025.100448
Abstract
We explore a theoretical framework in which Lorentz symmetry is explicitly broken by incorporating derivative terms of the extrinsic curvature into the gravitational action. These modifications introduce a scale-dependent damping effect in the propagation of gravitational waves (GWs), governed by a characteristic energy scale denoted as . We derive the modified spectral energy density of GWs within this model and confront it with recent observational data from the NANOGrav 15-year dataset and the second data release of the International Pulsar Timing Array (IPTA). Our analysis yields a lower bound on the Lorentz-violating energy scale, finding GeV at 68\% confidence level. This result significantly improves upon previous constraints derived from LIGO/VIRGO binary merger observations. Our findings demonstrate the potential of pulsar timing arrays to probe fundamental symmetries of spacetime and offer new insights into possible extensions of general relativity.
References in corpus (39)
- Quantum Gravity at a Lifshitz Point
- Data Tables for Lorentz and CPT Violation
- Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I
- Modern tests of Lorentz invariance
- Noncommutative Field Theory and Lorentz Violation
- Nonstandard optics from quantum spacetime
- Gravity with a dynamical preferred frame
- Cosmological Backgrounds of Gravitational Waves
- The NANOGrav 15-year Data Set: Search for Signals from New Physics
- Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A
- Signals for Lorentz Violation in Post-Newtonian Gravity
- The International Pulsar Timing Array second data release: Search for an isotropic Gravitational Wave Background
- Loop quantum gravity and light propagation
- The International Pulsar Timing Array: Second data release
- Chiral Primordial Gravitational Waves from a Lifshitz Point
- Spacetime-varying couplings and Lorentz violation
- Testing local Lorentz invariance with gravitational waves
- Inflationary interpretation of the stochastic gravitational wave background signal detected by pulsar timing array experiments
- Low-energy Limits on the Antisymmetric Tensor Field Background on the Brane and on the Non-commutative Scale
- Covariant Horava-like and mimetic Horndeski gravity: cosmological solutions and perturbations
- Alive and well: mimetic gravity and a higher-order extension in light of GW170817
- Detecting a Lorentz-Violating Field in Cosmology
- Spontaneous Lorentz Violation and Nonpolynomial Interactions
- Signals for Lorentz violation in gravitational waves
- Effects of parity violation on non-gaussianity of primordial gravitational waves in Hořava-Lifshitz gravity
- Polarizing primordial gravitational waves by parity violation
- Propagation of the gravitational waves in a cosmological background
- Combined search for anisotropic birefringence in the gravitational-wave transient catalog GWTC-1
- Gravitational wave constraints on Lorentz and parity violations in gravity: high-order spatial derivative cases
- Spatially covariant gravity theories with two tensorial degrees of freedom: the formalism
- Gravitational waves effects in a Lorentz-violating scenario
- Horava gravity with mixed derivative terms
- Higher derivative scalar-tensor theory and spatially covariant gravity: the correspondence
- Radiatively Induced Lorentz and Gauge Symmetry Violation in Electrodynamics with Varying alpha
- Constraints on parity and Lorentz violations in gravity from GWTC-3 through a parametrization of modified gravitational wave propagations
- Does the speed of gravitational waves depend on the source velocity?
- Gravitational wave constraints on non-birefringent dispersions of gravitational waves due to Lorentz violations with GWTC-3
- Signature of Lorentz Violation in Continuous Gravitational-Wave Spectra of Ellipsoidal Neutron Stars
- Measuring Gravitational Wave Speed and Lorentz Violation with the First Three Gravitational-Wave Catalogs