Incorporating Thermal Fluctuations into the Immersed Boundary Method

We present a new computational method for simulating microscopic processes in physiology which accounts for stochastic thermal fluctuations and a dynami-cally evolving fluid environment. This latter feature is a principal advantage of our method relative to Brownian or Stokesian particle dynamics methods. Our approach builds on the \Immersed Boundary Method " of Peskin, which simplies the coupling between the fluid and the immersed particles and membranes so as to avoid complex boundary problems