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Stochastic motions of the two-dimensional many-body delta-Bose gas, I: One-δ motions

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arxiv 2505.01703 v2 pith:KLMC5UYI submitted 2025-05-03 math.PR

Stochastic motions of the two-dimensional many-body delta-Bose gas, I: One-δ motions

classification math.PR
keywords motionsstochasticdeltadelta-boseone-two-dimensionalformulasmany-body
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This paper is the first in a series devoted to constructing stochastic motions for the two-dimensional $N$-body delta-Bose gas for all integers $N\geq 3$ and establishing the associated Feynman-Kac-type formulas; see [12,13,14] for the remaining of the series. The main results of this paper establish the foundation by studying the stochastic one-$\delta$ motions, which relate to the two-dimensional many-body delta-Bose gas by turning off all but one delta function, and we prove the central distributional properties and the SDEs. The proofs extend the method in [11] for the stochastic relative motions and develop and use analytical formulas of the probability distributions of the stochastic one-$\delta$ motions.

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Cited by 2 Pith papers

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    math.PR 2026-06 unverdicted novelty 4.0

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