Alternative LISA-TAIJI networks: Detectability of the Parity Violation in Stochastic Gravitational Wave Background

Abstract

The detection of parity violation in the isotropic stochastic gravitational wave background (SGWB) will serve a crucial probe for new physics, particularly in parity-violating theories of gravity. The joint observations by the planned space-borne gravitational wave detectors, LISA and TAIJI, will offer a unique opportunity to observe such effects in the millihertz (mHz) band. This study evaluates the detectability of parity violation in the SGWB using two network configurations: LISA-TAIJIp and LISA-TAIJIm. The former configuration consists of LISA (inclined at $+60^{\circ }$ relative to the ecliptic plane) and TAIJIp (also inclined at $+60^{\circ }$), while the latter network pairs LISA with TAIJIm (inclined at $-60^{\circ }$). Our analysis demonstrates that the sensitivity of the LISA-TAIJIm network to parity violation in the SGWB is approximately one order of magnitude greater than that of the LISA-TAIJIp network at lower frequencies. To quantify the performance of the two networks, we evaluate the signal-to-noise ratios for different spectral shapes, including power-law, single-peak, and broken power-law models, and estimate parameter determination using the Fisher information matrix. The results confirm that LISA-TAIJIm outperforms LISA-TAIJIp in detecting the SGWB with circular polarization components, offering a superior opportunity to test parity-violating gravitational constraints on various mechanisms in the mHz band.

14 pages, 6 figures, accepted for publication in PRD

References in corpus (34)

• Array Programming with NumPy
• Gravitational Waves from Phase Transitions at the Electroweak Scale and Beyond
• Cosmology with the Laser Interferometer Space Antenna
• Chiral Primordial Gravitational Waves from a Lifshitz Point
• Circular Polarization of Primordial Gravitational Waves in String-inspired Inflationary Cosmology
• Induced gravitational waves as a probe of thermal history of the universe
• The LISA-Taiji network
• Improved reconstruction of a stochastic gravitational wave background with LISA
• Measuring a Parity Violation Signature in the Early Universe via Ground-based Laser Interferometers
• Resonant multiple peaks in the induced gravitational waves
• Polarization analysis of gravitational-wave backgrounds from the correlation signals of ground-based interferometers: measuring a circular-polarization mode
• Prospects for direct detection of circular polarization of gravitational-wave background
• Quest for circular polarization of gravitational wave background and orbits of laser interferometers in space
• Spectral separation of the stochastic gravitational-wave background for LISA: observing both cosmological and astrophysical backgrounds
• Measuring Parity Violation in the Stochastic Gravitational Wave Background with the LISA-Taiji network
• Simultaneous estimation of astrophysical and cosmological stochastic gravitational-wave backgrounds with terrestrial detectors
• Enhanced Gravitational Waves from Inflaton Oscillons
• Alternative LISA-TAIJI networks
• Chirality of the gravitational-wave background and pulsar-timing arrays
• Detectable Gravitational Wave Signals from Affleck-Dine Baryogenesis
• Algorithm for TDI numerical simulation and sensitivity investigation
• Gravitational Wave Background Search by Correlating Multiple Triangular Detectors in the mHz Band
• On networks of space-based gravitational-wave detectors
• Measuring Parity Asymmetry of Gravitational Wave Backgrounds with a Heliocentric Detector Network in the mHz Band
• Chiral vacuum fluctuations in quantum gravity
• Upper limits on the Polarized Isotropic Stochastic Gravitational-Wave Background from Advanced LIGO-Virgo's First Three Observing Runs
• Multiband gravitational wave observations of stellar binary black holes at the low to middle and high frequencies
• Resonance instability of primordial gravitational waves during inflation in Chern-Simons gravity
• Generation of gravitational waves in dynamical Chern-Simons gravity
• Parity violation in gravitational waves and observational bounds from third-generation detectors
• On Detecting Stellar Binary Black Holes via the LISA-Taiji Network
• Measuring the maximally allowed polarization states of the isotropic stochastic gravitational wave background with the ground-based detectors
• Time delay interferometry with minimal null frequencies
• Enhancing noise characterization with robust time delay interferometry combination

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