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arXiv 2006.13040math-phmath.MP
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具有奇异三体相互作用的弱相互作用玻色子向平均场演化的收敛速度

Rate of convergence towards mean-field evolution for weakly interacting bosons with singular three-body interactions

Jinyeop Lee

摘要:

本文研究了三维空间中具有奇异三体相互作用的$N$弱相互作用玻色子系统的动力学。通过假定初始数据为因子分解后的$Ψ_{N,0}=φ_{0}^{\otimes N}$和三重碰撞,我们证明了在多粒子极限下,其平均场近似收敛于五次Hartree动力学.此外,我们还证明了对于$φ_{0}\in H^{(3/2)+a}(\mathbb{R}^{3})$,向着平均场五次Hartree演化的收敛速度是$O(N^{-(1+4a)/(3+2a)})$,其中对于$a>1$,$0\leq a<1/2$和$O(N^{-1})$.我们的证明是基于和扩展的Fock空间的方法。

英文摘要:

In this paper, we investigate the dynamics of a system of $N$ weakly interacting bosons with singular three-body interactions in three dimensions. By assuming factorized initial data $Ψ_{N,0}=φ_{0}^{\otimes N}$ and triple collisions, we prove that in the many-particle limit, its mean-field approximation converges to quintic Hartree dynamics. Moreover, we prove that the rate of convergence towards the mean-field quintic Hartree evolution is of $O(N^{-(1+4a)/(3+2a)})$ for $φ_{0}\in H^{(3/2)+a}(\mathbb{R}^{3})$ where $0\leq a<1/2$ and $O(N^{-1})$ for $a>1$. Our proof is based on and extends the Fock space approach.

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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