Nice paper! Gives agood overview of what id possible and what is not with respect to bit commitment from relativistic assumptions. I guess it would be natural to reference this paper by Crepeau and Co. as well: http://dx.doi.org/10.1007/978-3-642-25385-0_22
...(continued)I wonder if the spin-boson bath example presented on p. 10 of this preprint is internally consistent with the proposed internally-consistent derivation. The interaction Hamiltonian H_I operator in (61) for the spin boson model is neither bounded nor is it trace class, thus the trace and operator no
You might consider citing this paper by Ambainis et al. :
http://arxiv.org/abs/quant-ph/0003136
...(continued)This result is very encouraging for experimentalists dealing with CV clusters. While the various thresholds are quite high with respect to current squeezing technologies, the mere existence of a near-feasible threshold gives us something tangible to work towards.
Thanks for keeping CV clusters re