Central limit theorems for the one-dimensional Rayleigh gas with semipermeable barriers - Erdös, László; Tuyen, Dao (Communications in Mathematical Physics, 1992)
A version of the one-dimensional Rayleigh gas is considered: a point particle of mass M (molecule), confined to the unit interval [0,1], is surrounded by an infinite ideal gas of point particles of mass 1 (atoms). The molecule interacts with the atoms and with the walls via elastic collision. Central limit theorems are proved for a wide class of additive functionals of this system (e.g. the number of collisions with the walls and the total length of the molecular path).
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