Collective phenomena in economy and society

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Collective Phenomena Red Spiders Physics Physics Blah Physics Economy Blah Society Blah

Also known as mass action, collective behavior, and artificial chemistry. Strong interactions such as those in macroscopic systems frequently induce transitions and lead to new equilibrium phases of matter. These phases exhibit their own chqaracteristic fluctuations or elementary excitations known as collective modes. Although a description of these phenomena at the microscopic level can be quite complicated, the important large scale, or longtime hydrodynamic behavior is often is often simple to describe.

Phenomenal approaches based on this concept have led to certain quantum as well as classical field theories that over recent years have played a major role in shaping our understanding of condensed matter and high energy physics.

Our goal is to develop a framework in which to describe critical properties associated with classical and quantum phase transitions; and at the same time to emphasize the importance and role played by symmetry and topography.

1. Mass action (sociology), in sociology, a term for situations in which a large number of people behave simultaneously in similar ways individually and without coordination

1. Mass action (physics), in statistical physics, the proposition that a large number of small units acting randomly may compose a larger pattern

Physics

• Solitons
• Perturbation theory in quantum mechanics
• Ising Model
• The quantization of magnetic flux in a superconductor
• quantum Hall effect are both collective phenomena associated with thermodynamically large numbers of particles.

Economy

religions

condensation of vapor into liquid droplets

Society

Society shows sometimes abrupt changes - revolutions - which are related to phase transitions: both are sudden and dramatic changes of behavior.

Social systems are prominent examples of complex systems. Concepts, tools and models aiming at identifying generic mechanisms underlying collective phenomena in these systems are developed with the use of

Game Theory

===Statistical Physics===,

Revolution - cultural conflicts

and problems of social consensus are examples of phenomena being addressed.

Other Examples

Animal Magnetism, like Herding

References

1. http://www.santafe.edu/research/topics-dynamics-human-behavior-institutions.php
2. Soft Condensed Matter, by Richard A. L. Jones (Oxford University Press, 2007).
3. Solid State Physics, by J. R. Hook and H. E. Hall (Wiley, 2007).
4. http://www.tcm.phy.cam.ac.uk/~bds10/phase.html