6 papers
Detecting Parity-Violating Gravitational Wave Backgrounds with Pulsar Polarization Arrays
Qiuyue Liang, Kimihiro Nomura, Hidetoshi Omiya
Pulsar timing arrays probe isotropic stochastic gravitational wave (GW) backgrounds in the nanohertz band but are insensitive to its parity-violating component. Motivated by recent…
Simulations of Shapiro, Gravitational, and Doppler time delays in pulsar networks for ultralight dark matter
Andrew Eberhardt, Qiuyue Liang, Elisa G. M. Ferreira
The study of ultralight dark matter helps to constrain the lower bound of the mass in minimally coupled dark matter models. The granular structure of ultralight dark matter density…
Relativistic Fractons and their Dust
Qiuyue Liang, Tom Melia
We define a relativistic version of the global symmetries responsible for the restricted mobility of fracton quasiparticles. The theories have a symmetry current that is proportion…
First astrometric constraints on parity-violation in the gravitational wave background
Santiago Jaraba, Sachiko Kuroyanagi, Qiuyue Liang +2
Astrometry, the precise measurement of stellar positions and velocities, offers a promising approach to probing the low-frequency stochastic gravitational wave background (SGWB). N…
Gravitational Wave with Domain Wall Dominance
Sungwoo Hong, Sung Mook Lee, Qiuyue Liang
Domain walls (DWs) can be produced when a discrete symmetry is spontaneously broken, and long-lived DWs can dominate the energy density of the universe. In this work, we explore th…
Testing Gravity with Realistic Gravitational Waveforms in Pulsar Timing Arrays
Wayne Hu, Qiuyue Liang, Meng-Xiang Lin +1
We consider the effects of relaxing the assumption that gravitational waves composing the stochastic gravitational wave background (SGWB) are uncorrelated between frequencies in an…