Radiation-like Shock Waves in Kink Scattering

• Main Authors: Li, Xiang, Long, Lingxiao
• Format: Journal Article
• Language: English
• Published: 19.07.2024
• Subjects: Physics - High Energy Physics - Theory; Physics - Pattern Formation and Solitons
• DOI: 10.48550/arxiv.2407.14479

We study the radiation in kink collision via a model that varies between $\phi^6$ theory and $\phi^2$ theory with some discontinuities. Both numerical and analytical methods were used to investigate The kink-antikink(KAK) and antikink-kink(AKK) collision. In the numerical analysis, we found the critical velocities in both collisions increased with $n$. We also found a finite lifetime oscillon window in KAK collision for $n=2$. In the analytical part, we found a family of shock wave solutions that describes radiation in the kink collision perfectly. Moreover, an analytical AKK solution at $n\rightarrow\infty$ and $v=1$ was found by considering a certain limit of these solutions.