50 citations · 129 across the 5 of their papers we have counts for
5 papers
Stability of Superconducting Strings
Keisuke Harigaya, Xuce Niu, Wei Xue +1
We investigate the stability of superconducting strings as bound states of strings and fermion zero modes at both the classical and quantum levels. The dynamics of these supercondu…
Gauged Global Strings
Xuce Niu, Wei Xue, Fengwei Yang
We investigate the string solutions and cosmological implications of the gauge global model. With two hierarchical symmetry-breaking scales…
NANOGrav signal from axion inflation
Xuce Niu, Moinul Hossain Rahat
Several pulsar timing arrays including NANOGrav, EPTA, PPTA, and CPTA have recently reported the observation of a stochastic background of gravitational wave spectrum in the nano-H…
Parity-Odd and Even Trispectrum from Axion Inflation
Xuce Niu, Moinul Hossain Rahat, Karthik Srinivasan +1
The four-point correlation function of primordial scalar perturbations has parity-even and parity-odd contributions and the parity-odd signal in cosmological observations is openin…
Gravitational Wave Probes of Massive Gauge Bosons at the Cosmological Collider
Xuce Niu, Moinul Hossain Rahat, Karthik Srinivasan +1
We extend the reach of the ``cosmological collider'' for massive gauge boson production during inflation from the CMB scales to the interferometer scales. Considering a Chern-Simon…