activity
20222026
most citedExcited oscillons: cascading levels and higher multipoles

9 citations · 9 across the 8 of their papers we have counts for

collaborators

8 papers

hep-th2026

Quantum-Corrected Q-balls in the Friedberg-Lee-Sirlin Model

Yong-Xiang Su, Qi-Xin Xie, Shuang-Yong Zhou

We study the real-time quantum dynamics of Q-balls in the Friedberg-Lee-Sirlin model within the inhomogeneous Hartree approximation. The mean fields are evolved self-consistently w…

gr-qc2026

Quantum fields in boson star spacetime

Paul M. Saffin, Qi-Xin Xie

Boson stars have been extensively studied in classical gravity, but their quantum properties remain comparatively unexplored. In this paper, we compute the quantum scalar fields an…

hep-th2025

Superradiance of Friedberg-Lee-Sirlin Solitons

Guo-Dong Zhang, Cheng-Hao Li, Qi-Xin Xie +1

It has recently been pointed out that rotation in internal space can induce superradiance. We explore this effect in non-topological solitons of the two-field Friedberg-Lee-Sirlin…

hep-th2024

Spinning -ball Superradiance in 3+1D

Guo-Dong Zhang, Fu-Ming Chang, Paul M. Saffin +2

Recently, it has been found that a -ball can amplify waves incident upon it, due to rotation in the internal space and the interaction of the two modes in the complex scalar fie…

hep-th2023

Quantum corrected Q-ball dynamics

Qi-Xin Xie, Paul M. Saffin, Anders Tranberg +1

The physics of individual Q-balls and interactions between multiple Q-balls are well-studied in classical numerical simulations. Interesting properties and phenomena have been disc…

gr-qc2023

Boson Star Superradiance

He-Yu Gao, Paul M. Saffin, Yi-Jie Wang +2

Recently, it has been realized that in some systems internal space rotation can induce energy amplification for scattering waves, similar to rotation in real space. Particularly, i…

hep-th2022

Q-ball Superradiance

Paul M. Saffin, Qi-Xin Xie, Shuang-Yong Zhou

Q-balls are non-topological solitons that coherently rotate in field space. We show that these coherent rotations can induce superradiance for scattering waves, thanks to the fact…

hep-th2022★ 9 cited

Excited oscillons: cascading levels and higher multipoles

Yi-Jie Wang, Qi-Xin Xie, Shuang-Yong Zhou

Two types of excited oscillons are investigated. We first focus on spherical symmetry and find that there are a tower of spherical oscillons with higher energies. Despite having mu…