|This program will run in two installments: February 15 - March 1, 2010 and December
12 - 17, 2010.
The classical theories on phase transitions are based on the thermodynamic limit. This implies
inﬁnitely large or small extension on all the systems that are considered. The success of the
resulting scaling laws and the corresponding generalisation is impressive. However, these theories
fail to address many of the important aspects, as ﬁniteness in extension is apparent in most physical
As an example, the physics of magnetic multilayers has caused considerable attention lately, largely
due to their technological importance. This interest has implied substantial increase in our
knowledge and triggered renewed views on e.g. the range of the magnetic interactions. Interactions
over large distances are now integrated in the description of the ordering of such systems.
In classical Monte Carlo calculations the interactions are most frequently mapped onto nearest
neighbours. This has been shown to yield a correct behaviour for inﬁnite systems, thus there has
been limited driving force to use more complicated models (and CPU intensive) in this type of
studies. However, this approach will not hold for ﬁnite systems with long-range interactions.
Obtaining better understanding of phase transitions of conﬁned systems is not only timely, it will
enhance our understanding of dimensional crossovers, as well as the changes in the critical
These effects are not limited to magnetic phase transitions. Any second order transition, with
corresponding ﬂuctuations is expected to show strong ﬁnite size effects, on ordering temperature as
well as the critical exponents. Thus, this question is of highly generic nature and has signiﬁcance
within condensed matter physics, chemistry as well as biology.
In this program we will EXPLORE THE INFLUENCE OF CONFINEMENT ON PHASE TRANSITIONS. This exploration will address both the static as well as the dynamic aspects, as these are intimately linked.
||from 15 February 2010 08:00 to 01 March 2010 18:00
||Prof. HJöRVARSSON, B.
Prof. ERIKSSON, O.
Prof. ROSENGREN, Anders
Prof. BRAMWELL, S T