7 papers
Gravitational Waves from Long Strings and Loops
Christos Litos, Sarunas Verner, Wei Xue +1
We compute the gravitational wave spectrum produced by a global cosmic string network in the scaling regime. The spectrum naturally divides at the string correlation length into in…
The Holographic QCD Axion in Five Dimensions
Csaba Csáki, Eric Kuflik, Wei Xue +1
We present a holographic construction of the QCD axion based on a warped 5D model. A key ingredient of our setup is the introduction of a bulk scalar field , which is holographi…
Angle and Axial Anomaly in Holographic QCD
Csaba Csáki, Eric Kuflik, Wei Xue +1
We present a bottom-up holographic description of the QCD -vacuum and the anomaly in five dimensions. The multi-branched -vacuum structure emerges geometrically from…
Axion strings from string axions
James M. Cline, Christos Litos, Wei Xue
A favored scenario for axions to be dark matter is for them to form a cosmic string network that subsequently decays, allowing for a tight link between the axion mass and relic abu…
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…
Gravitational Production of Heavy Particles during and after Inflation
Davide Racco, Sarunas Verner, Wei Xue
We investigate the gravitational production of a scalar field with a mass exceeding the Hubble scale during inflation , employing both analytical and numerical…
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…