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arXiv 2403.13232hep-th
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时间相关量子孤子的微扰方法

Perturbative Approach to Time-Dependent Quantum Solitons

Jarah Evslin, Kehinde Ogundipe

AI总结:

本文推广了一种轻量级量子孤子微扰方法至经典极限随时间变化的量子态,利用相干态启发的幺正算子分解非微扰部分,从而将求解简化为纯微扰问题,面向孤子碰撞与振荡子研究。

摘要:

最近我们引入了一种轻量级的量子孤子微扰方法。迄今为止,我们的方法主要局限于由单个孤子加上有限数量的介子组成的构型,其经典极限是孤立静止或刚性运动的孤子。在本文中,着眼于孤子碰撞和振荡子,我们将此方法推广到经典极限真正依赖于时间的量子态。更确切地说,我们使用一个受孤子相干态方法启发的幺正算子,将态的非微扰部分(包括经典运动)分解出来。量子态及其演化的求解随后被简化为一个完全微扰的问题。

英文摘要:

Recently we have introduced a lightweight, perturbative approach to quantum solitons. Thus far, our approach has been largely limited to configurations consisting of a single soliton plus a finite number of mesons, whose classical limit is an isolated stationary or rigidly moving soliton. In this paper, with an eye to soliton collisions and oscillons, we generalize this approach to quantum states whose classical limits are genuinely time-dependent. More precisely, we use a unitary operator, inspired by the coherent state approach to solitons, to factor out the nonperturbative part of the state, which includes the classical motion. The solution for the quantum state and its evolution is then reduced to an entirely perturbative problem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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