Lecturer: Prof. Yariv Kafri
Affiliation: Israel Institute of Technology -
Technion
Abstract:
Pressure is the mechanical force per unit
area that a confined system exerts on its
container. In thermal equilibrium, the
pressure depends only on bulk properties
(density, temperature, etc.) through an
equation of state. The talk will show that
in active systems containing self-propelled
particles, the pressure instead can depend on
the precise interactions between the system's
contents and its confining walls. This implies
that generic active systems have no equation
of state. Other anomalous attributes of
pressure will also be discussed.
Finally, it will be shown that in certain fine
tuned cases an equation of state can be
recovered. The physics behind the equation
of state in a specific example will be
discussed.