Profile and width of rough interfaces

In the context of Landau theory and its field theoretical refinements, interfaces between coexisting phases are described by intrinsic profiles. These intrinsic interface profiles, however, are neither directly accessible by experiment nor by computer simulation as they are broadened by long-wavelength capillary waves. In this paper we study the separation of the small scale intrinsic structure from the large scale capillary wave fluctuations in the Monte Carlo simulated three-dimensional Ising model. To this purpose, a blocking procedure is applied, using the block size as a variable cutoff, and a translationally invariant method to determine the interface position of strongly fluctuating profiles on small length scales is introduced. While the capillary wave picture is confirmed on large length scales and its limit of validity is estimated, an intrinsic regime is, contrary to expectations, not observed.Comment: 18 pages, 4 Postscript figures, LaTeX2e, formulation of sec.3.2 improved, 1 reference adde

International Climate Finance and its Influence on Fairness and Policy

27 p.Besides costs and benefits, fairness aspects tend to influence negotiating parties’ willingness to join an international agreement on climate change mitigation. Fairness is largely considered to improve the prospects of success of international negotiations and hence measures raising fairness perception might – in turn – help to bring about effective cooperative international climate change mitigation. We consider the influences present international support of climate policy in developing countries exerts on fairness perception and how this again might affect international negotiations. In doing so, we distinguish between fairness perception which is based on historical experiences and perception which is based on conjectures about opponents’ intentions. By identifying beneficial components of current support schemes, lessons can be learnt for designing new schemes like the Green Climate Fund