263 citations · 751 across the 16 of their papers we have counts for
16 papers
Realization Variance of Gravitational Wave Background Anisotropies from Shot Noise for Pulsar Timing Arrays
Meng-Xiang Lin, Adam Lidz, Chung-Pei Ma
Shot-noise anisotropies in the nHz gravitational wave background (GWB) are a promising target for pulsar timing arrays (PTAs). If the nHz GWB is sourced by merging supermassive bla…
Analytical Estimates of Gravitational Wave Background Anisotropies from Shot Noise and Large-Scale Structure in Pulsar Timing Arrays
Meng-Xiang Lin, Adam Lidz, Chung-Pei Ma
An important next step for pulsar timing arrays (PTAs) is to measure anisotropies in the gravitational wave background (GWB) at nano-Hz frequencies. We calculate the expecte…
Consistent Initial Conditions for Early Modified Gravity in Effective Field Theory
Jiaming Pan, Meng-Xiang Lin, Gen Ye +2
Precise initial conditions (ICs) are crucial for accurate computation in cosmological perturbation theory. We derive the consistent ICs for Horndeski theory in the Effective Field…
Late Time Modification of Structure Growth and the S8 Tension
Meng-Xiang Lin, Bhuvnesh Jain, Marco Raveri +5
The tension between low-redshift galaxy surveys and the primary CMB signals a possible breakdown of the CDM model. Recently differing results have been obtained using low-…
A Test of Gravity with Pulsar Timing Arrays
Qiuyue Liang, Meng-Xiang Lin, Mark Trodden
A successful measurement of the Stochastic Gravitational Wave Background (SGWB) in Pulsar Timing Arrays (PTAs) would open up a new window through which to test the predictions of G…
A Dark Matter Trigger for Early Dark Energy Coincidence
Meng-Xiang Lin, Evan McDonough, J. Colin Hill +1
Early dark energy (EDE), whose cosmological role is localized in time around the epoch of matter-radiation equality in order to resolve the Hubble tension, introduces a new coincid…
Modified gravitational wave propagation with higher modes and its degeneracies with lensing
Jose Maria Ezquiaga, Wayne Hu, Macarena Lagos +2
Low-energy alternatives to General Relativity (GR) generically modify the phase of gravitational waves (GWs) during their propagation. As detector sensitivities increase, it become…
The Early Dark Sector, the Hubble Tension, and the Swampland
Evan McDonough, Meng-Xiang Lin, J. Colin Hill +2
We consider the interplay of the Early Dark Energy (EDE) model, the Swampland Distance Conjecture (SDC), and cosmological parameter tensions. EDE is a proposed resolution of the Hu…
Gravitational wave propagation beyond general relativity: waveform distortions and echoes
Jose Maria Ezquiaga, Wayne Hu, Macarena Lagos +1
We study the cosmological propagation of gravitational waves (GWs) beyond general relativity (GR) across homogeneous and isotropic backgrounds. We consider scenarios in which GWs i…
Testing H0 in Acoustic Dark Energy Models with Planck and ACT Polarization
Meng-Xiang Lin, Wayne Hu, Marco Raveri
The canonical acoustic dark energy model (cADE), which is based on a scalar field with a canonical kinetic term that rapidly converts potential to kinetic energy around matter radi…
Curvature Perturbations in the Effective Field Theory of Inflation
Macarena Lagos, Meng-Xiang Lin, Wayne Hu
We discuss the difference between various gauge-invariant quantities typically used in single-field inflation, namely synchronous , comoving , and unitary curvature…
Acoustic Dark Energy: Potential Conversion of the Hubble Tension
Meng-Xiang Lin, Giampaolo Benevento, Wayne Hu +1
We discuss the ability of a dark fluid becoming relevant around the time of matter radiation equality to significantly relieve the tension between local measurements of the Hubble…
Phenomenology of Modified Gravity at Recombination
Meng-Xiang Lin, Marco Raveri, Wayne Hu
We discuss the phenomenological imprints of modifications to gravity in the early universe with a specific focus on the time of recombination. We derive several interesting results…
Toward (Finally!) Ruling Out Z and Higgs Mediated Dark Matter Models
Miguel Escudero, Asher Berlin, Dan Hooper +1
In recent years, direct detection, indirect detection, and collider experiments have placed increasingly stringent constraints on particle dark matter, exploring much of the parame…
Gravitational Microlensing by Neutron Stars and Radio Pulsars: Event Rates, Timescale Distributions, and Mass Measurements
Shi Dai, Martin C. Smith, Mengxiang Lin +3
We investigate properties of Galactic microlensing events in which a stellar object is lensed by a neutron star. For an all-sky photometric microlensing survey, we determine the nu…
Oscillation Driven Magnetospheric Activity In Pulsars
Meng-Xiang Lin, Ren-Xin Xu, Bing Zhang
We study the magnetospheric activity in the polar cap region of pulsars under stellar oscillations. The toroidal oscillation of the star propagates into the magnetosphere, which pr…