26 citations · 46 across the 8 of their papers we have counts for
11 papers
Quasinormal-Mode Collider Spectroscopy
Mian Zhu, Jun Tao, Peng Wang
Black-hole (BH) quasinormal modes encode the properties of merger remnants and provide powerful tests of strong-field gravity. The BH spectroscopy has predominantly treated them as…
Finite Coherence in Gravitational Waves from Tidally Excited Axion Clouds
Yizhi Liang, Mian Zhu, Wen-Biao Han +3
Axion clouds around rotating black holes form gravitational atoms whose tidal transitions can radiate gravitational waves in binaries. For strongly coupled Bohr crossings, transiti…
Revisiting the Lyth bound constraints on inflation from ACT DR6 results
Rui Yang, Jun Tao, Peng Wang +1
The Lyth bound asserts that the field excursion of inflaton must be sub-Planckian, thereby imposing an upper bound on the amplitude of the tensor power spectrum in inflationary sce…
Testing gravitational wave polarizations with LISA
Shingo Akama, Maxence Corman, Paola C. M. Delgado +16
In this paper we quantify the ability of the Laser Interferometer Space Antenna (LISA) to test the presence of non-tensorial polarizations as well as modifications to the tensor on…
Smoking-gun signatures of bounce cosmology from echoes of relic gravitational waves
Mian Zhu, Yi-Fu Cai
We report a novel feature of relic gravitational waves (GWs) in non-singular bounce cosmologies that is testable in light of GWs astronomy. In non-singular bounce cosmologies, the…
Constraints on Genesis Cosmology from the Smeared Null Energy Condition
Dong-Hui Yu, Mian Zhu, Yong Cai
The violation of the null energy condition (NEC) is essential for constructing nonsingular cosmological scenarios, such as Genesis cosmology, which avoids the initial singularity b…
Scalar-assisted magnetogenesis during the radiation-dominated epoch
Alexander Ganz, Chunshan Lin, Mian Zhu
We propose a novel mechanism to generate primordial magnetic fields (PMFs) strong enough to explain the observed cosmic magnetic fields. We employ a scalar field charged under U(1)…
Constraining matter-bounce scenario from scalar-induced vector perturbations
Mian Zhu, Chao Chen
Bouncing cosmologies, while offering a compelling alternative to inflationary models, face challenges from the growth of vector perturbations during the contracting phase. While li…
Interpreting Pulsar Timing Array data of Gravitational Waves with Ekpyrosis-Bouncing Cosmology
Taotao Qiu, Mian Zhu
Recent pulsar timing array (PTA) experiments have reported strong evidence of the stochastic gravitational wave background (SGWB). If interpreted as primordial Gravitational Waves…
Parity violation in primordial tensor non-Gaussianities from matter bounce cosmology
Shingo Akama, Mian Zhu
It has been shown that primordial tensor non-Gaussianities from a cubic Weyl action with a non-dynamical coupling are suppressed by the so-called slow-roll parameter in a conventio…
Null energy condition violation during inflation and pulsar timing array observations
Gen Ye, Mian Zhu, Yong Cai
Recently, evidence of stochastic gravitational wave background (SGWB) signals observed by pulsar timing array (PTA) collaborations, has prompted investigations into their origins.…