Sorin Solomon short CV Full Professor Full Professor at the Racah Institute of Physics of the Hebrew University of Jerusalem. DirectorDirector, Division of Multi-Agent Systems; Institute for Scientific Interchange Torino. Past Tasks: Head of the Theoretical Physics Section at the Racah Institute of Physics, Head of the Center for Microphysics and Cosmology, Scientific Head of the Visualization Center at HUJ. Awards: Levinson Prize, Bantrel Prize at Caltech, J.F. Kennedy Prize, Weizmann Fellowship, Keren Kayemet Prize. Committees Member: Center for Complexity Science, Jerusalem, Complexus journal, Int. J. Mod. Phys. C, Journal of Statistical Mechanics. Representative Paper (out of about 200): The importance of being discrete: Life always wins on the surface with Shnerb, Louzoun, Bettelheim, Proc. Natl. Acad. Sci. USA, Vol. 97, Issue 19, , September 12, 2000 Conference Talks (a few tens), e.g. Plenary talk at EPS-12; The General Conference of the European Physical Society.EPS-12; The General Conference of the European Physical Society. Book: Microscopic Simulation of Financial Markets, with M. Levy and H. Levy, Academic Press, New York, Media Coverage: BBC, New York Times, Herald Tribune, Boston Globe, Der Standard, New Scientist, Neue Zurische Zeitung, Le Figaro, Business2.0, The Guardian, Nature, Science, Ha’Aretz, Europhysics News, Globe and Mail (Canada), ReutersBBCBoston GlobeDer Standard New ScientistThe Guardian

What is Complexity?

T-99 0 C A water molecule in a container at 99 0 C

T-99 0 C The molecule moves in a disordered way bumping on the walls from time to time. A water molecule in a container at 99 0 C

T-99 0 C What Happens if one heats the walls of the container by 2 degrees? A water molecule in a container at 99 0 C The molecule moves in a disordered way bumping on the walls from time to time.

T-99 0 CT C Almost nothing: the molecule will bump on the walls in average a little bit faster. A water molecule in a container at 99 0 C What Happens if one heats the walls of the container by 2 degrees?

T-99 0 CT C What happens if one adds 3 more water molecules (at T= 99 0 C) ? A water molecule in a container at 99 0 C

T-99 0 CT C Almost nothing! They will also occasionally bump among themselves; Their average speed will be equal to the one of the single molecule before. T-99 0 C What happens if one adds 3 more water molecules (at T= 99 0 C) ?

T-99 0 CT C What happens if one increases now the temperature by 2 0 C? T-99 0 C

T C Almost nothing, they will just increase a bit their average speed. T-99 0 CT C What happens if one increases now the temperature by 2 0 C?

T-99 0 CT C What happens now, if one introduces in the container 1Kg of such molecules and repeats the experiment of heating the walls by 2 0 C? T-99 0 CT C

T-99 0 CT C T-99 0 C T C Very Dramatic Effect: What happens now, if one introduces in the container 1Kg of such molecules and repeats the experiment of heating the walls by 2 0 C?

T-99 0 CT C T-99 0 C T C Very Dramatic Effect: the spatial and speed distributions become inhomogeneous, and a lot of coordinated motion (bubbles) takes place: The water boils.

T-99 0 CT C Does a new fundamental law of Nature become active in between the 4 molecules and the 1 Kg of water?

T-99 0 CT C Yes and No: the actual interaction laws between molecules are not changed. Does a new fundamental law of Nature become active in between the 4 molecules and the 1 Kg of water?

T-99 0 CT C Yes and No: the actual interaction laws between molecules are not changed. But the existence of a large number of molecules leads to some new, collective, emergent, complex effects of those laws. This is a law of nature of a new type: More is Different (Anderson 1972)

T-99 0 CT C Could it be that similar effects govern the emergence of life from chemistry, of meaning from simple signals, of societies from individuals, of health from simple cells? (Anderson 1972)

Could it be that similar effects govern the emergence of life from chemistry, of meaning from simple signals, of societies from individuals, of health from simple cells etc?

Could it be that many complex phenomena unexplained until now could be the result of simple interactions among their simple components? To answer this one needs to transcend the traditional research within a single discipline and use trans-disciplinary methods. This requires growing a new generation of bi- or multi-lingual scientists. This requires more than a juxtaposition of expertizes.

Main research frameworks: -The micro-macro representation -The triangle team The interdisciplinary research requires typically (at least) 2 senior researchers from the relevant fields (the one knowing about “water molecules” and the one knowing about “boiling”) and one student. It is typically in the mind of the student that the connection between the laws of the water molecules and the laws of boiling will become one. The research structure of the project will then be Prof. in Field 1  PhD Student  Prof in Field 2 The conceptual structure will be: Microscopic Elements  Microscopic Interactions  Emergent Macroscopic Complex Phenomena My coworkers and I implemented this scheme in a wide range of domains as seen on the following page. In the process the students became professors, I indicate in brackets their present position. One can click for their home pages.

Moshe Levy; Assist Prof Finance HUJ Representation of Markets in terms of Inhomogenous individuals Book Acad Press Sorin Solomon Yoram Louzoun; Assist Prof. BIU Localization in Groups with Self- Enhancing trends Bul Math Bio; Artif life Ester Adi Japha; Faculty BIU Elements of children drawings associated with meaning Cognitive Development Jacob Goldenberg; Assoc Prof HUJ Creativity; Novelty Science;NYT Nava Rubin; Assoc Prof NYU 3D rigid sensation from 2D retina sensors Vision Research Yehuda Stolov, PhD Dynamics of Stories and Thought; IJMPC Lev Muchnik nature.com/nsu/020923/ html Collective Phenomena from Individual Behavior Eran Shir PhD Stud TA; Internet Group Behav; Europhys News Avishalom Shalit Self Organization of Open Self-Representation Uri Hershberg; Postdoc Yale Representation of Diseases in terms of many interacting antigens and antibodies; Phys A Ifat Levy, Postdoc NYU Brain activity maps elicited by visual stimuli Nature

The resulting complexity publications grouped by “target research field” (only papers since 1995 are listed)

Generic Complexity The Microscopic Representation of Complex Macroscopic Phenomena, The Microscopic Representation of Complex Macroscopic Phenomena, S. Solomon, Annual Reviews of Computational Physics II pp , editor D. Stauffer, World Scientific Collective Degrees of Freedom and Multiscale Dynamics in Spin Glasses Collective Degrees of Freedom and Multiscale Dynamics in Spin Glasses N. Persky and S.Solomon, Phys. Rev. E. 54 (1996) 4399; Complexity a Science at 30, S. Solomon and E. Shir, Europhysics News Feb-March 2003 p54

Visual System (reconstructing 3D bodies from 2D moving points) Restricted Ability to Recover 3D Global Motion from 1 D Motion Signals: Theoretical Observations, Restricted Ability to Recover 3D Global Motion from 1 D Motion Signals: Theoretical Observations, N. Rubin, S. Hochstein and S. Solomon, Vision Research 35 (1995) Restricted Ability to Recover 3D Global Motion from 1 D Motion Signals: Psychophysical Observations, N. Rubin, S. Hochstein and S. Solomon, Vision Research 35 (1995) The Microscopic Bases of Vision S. Solomon, in Perspectives on Cognitive Science, vol. 2, ed. B. Kokinov (NBU 1995)

Multiplicative Random walks, Lotka –Volterra systems, Returns Distributions and Pareto Laws Dynamical Explanation for the Emergence of Power Law in a Stock Market Model, Dynamical Explanation for the Emergence of Power Law in a Stock Market Model, M. Levy and S. Solomon, International Journal of Modern Physics C, Vol. 7, No. 1 (1996) Power Laws are Logarithmic Boltzmann Laws M. Levy and S. Solomon International Journal of Modern Physics C, Vol. 7, No. 4 (1996) 595; Spontaneous Scaling Emergence in Generic Stochastic Systems S. Solomon and M. Levy International Journal of Modern Physics C, Vol. 7, No. 5 (1996) 745 ; Power-law distributions and L\'evy-stable intermittent fluctuations in stochastic systems of many autocatalytic elements. O. Malcai O. Biham and S. Solomon, Phys. Rev. E, 60, 1299 (1999).

New Evidence for the Power Law Distribution of Wealth M. Levy and S. Solomon Physica A 242 (1997) Generic emergence of power law distributions and L\'evy-stable intermittent fluctuations in discrete logistic systems. O. Biham, O. Malcai, M. Levy and S. Solomon, Phys. Rev. E 58, 1352 (1998). Stochastic Lotka-Volterra Systems of Competing Auto-catalytic Agents lead Generically to Truncated Pareto Power Wealth Distribution, Truncated Levy Distribution of Market Returns, Clustered Volatility, Booms and Crashes. S. Solomon, in Decision Technologies for Computational Finance, edited by A.-P. Refenes, A. N. Burgess, and J. E. Moody (Kluwer Academic Publishers, 1998). Generalized Lotka Volterra (GLV) Models of Stock Markets S. Solomon, pp in "Applications of Simulation to Social Sciences", Eds: G Ballot and G Weisbuch; Hermes Science Publications Power laws in cities population, financial markets and internet sites (scaling in systems with a variable number of components) Aharon Blank and Sorin Solomon, Physica A 287 (1-2) (2000) pp

Power, Lévy, exponential and Gaussian-like regimes in autocatalytic financial systems, Z.F. Huang and S. Solomon Eur. Phys. J. B 20, (2001) Finite market size as a source of extreme wealth inequality and market instability Zhi-Feng Huang and Sorin Solomon Physica A, 294 (3-4) (2001) pp Long-time fluctuations in a dynamical model of stock market indices Ofer Biham, Zhi-Feng Huang, Ofer Malcai and Sorin Solomon Phys. Rev. E 64, (2001) Stochastic Multiplicative Processes for Financial Markets Zhi-Feng Huang and Sorin Solomon, Physica A 306 (2002) Stability of Pareto-Zipf law in non-stationary economies S. Solomon and P. Richmond in: Economics with heterogeneous interacting agents, ed. by A.Kirman and J.B. Zimmermann, Lecture Notes in Economics and Mathematical Systems, Springer, Berlin- Heidelberg 2001 page

Power Laws of Wealth, Market Order Volumes and Market Returns Sorin Solomon, Peter Richmond Physica A: Statistical Mechanics and its Applications, Vol. 299 (1-2) (2001) pp Power Laws are disguised Boltzmann Laws Peter Richmond, Sorin Solomon, International Journal of Modern Physics C, Vol. 12, No. 3 (2001) Self-Organization and Non-Self-Averaging Effects in Systems of Discrete Auto-Catalytic Elements S. Solomon, pp in Multiscale Computational Methods in Chemistry and Physics eds. A. Brandt, J. Bernholc and K. Binder, IOS Press 2001; NATO Science Series III: computer and Systems Sciences Vol Volatility driven markets in a generalized Lotka Voltera formalism Louzoun. Y. Solomon. S. (2001). Physica A Theoretical analysis and simulations of the generalized Lotka-Volterra model. O. Malcai, O. Biham, P. Richmond and S. Solomon, Phys. Rev. E66, (2002).

Co-Evolutionist Stochastic Dynamics: Emergence of Power-LawsPower-laws in stochastic Lotka-Volterra-Eigen-Schuster Systems S. Solomon, P. Richmond, O. Biham and O. Malcai, in: "Towards Cognitive Economics", Eds: P. Bourgine and J.-P. Nadal, Springer (2003).

Artificial Creativity and Novelty Emergence Creative Sparks Jacob Goldenberg, David Mazursky, and Sorin Solomon Science 285: , 1999; Toward Identifying the Inventive Templates of New Products: A Channeled Ideation Approach, Goldenberg Jacob, David Mazursky, and Sorin Solomon (1999), Journal of Marketing Research, 36 (May), p Meme's the Word, Jacob Goldenberg, David Mazursky, and Sorin Solomon Science 1999 November 19; 286: Templates of original innovation: Projecting original incremental innovations from intrinsic information Goldenberg J. Mazursky D. Solomon S., (1999) Technological Forecasting and Social Change, May, Vol. 61/1 P Creativity Templates: Towards Identifying the Fundamental Schemes of Quality Advertisements; Goldenberg J. Mazursky D. Solomon S. Marketing Science, Volume 18, Number 3, 1999 Scrutinizing Creativity Dennis Hollenberg;, Jacob Goldenberg, David Mazursky, and Sorin Solomon Science 1999 December 17; 286:

Agent Based Simulations of Stock Markets Microscopic Simulation of the Stock Market M. Levy, H. Levy and S. Solomon, Journal de Physique I France 5 (1995) A microscopic model of the stock market; Cycles, booms and crashes, A microscopic model of the stock market; Cycles, booms and crashes, M. Levy, H. Levy and S. Solomon, Economics Letters 45 (1994) The Complex Dynamics of a Simple Stock Market Model The Complex Dynamics of a Simple Stock Market Model M. Levy, N. Persky and S. Solomon Int. J. of High Speed Computing 8 (1996) Behaviorally realistic simulations of stock markets; Traders with a soul, Computer Solomon S Physics Communications (1999) Pioneers on a new continent: on physics and economics Sorin Solomon and Moshe Levy Quantitative Finance (IoP) Volume 3, Number 1, C12 February 2003

The Interacting Gaps Model: Reconciling Theoretical and Numerical Approaches to Limit-Order Models. L. Muchnik, F. Slanina, and S. Solomon. Physica A 330 (2003) 232. Statistical Mechanics of Conventional Traders May Lead to Non-Conventional Market Behavior, Lev Muchnik and Sorin Solomon Physica Scripta. Vol. T106, 41–47, 2003 An updated Review of the LLS Stock Market Model: Complex Market Ecology, Power Laws in Wealth Distribution and Market Returns, Sorin Siolomon and Moshe Levy, p69, in New Directions in Statistical Physics, ed. Luc Wille, Springer-Verlag 2004

Other Mental Processes The Dynamics of Childrens's Drawings. The Dynamics of Childrens's Drawings. E. Adi, I. Levin and S. Solomon, in Perspectives on Cognitive Science, vol. 2, ed. B. Kokinov (NBU 1995) Emergence of Representation in Drawing: The Relation Between Kinematic and Referential Aspects Ester Adi-Japha, Iris Levin and S. Solomon Cognitive Development 13, (1998) What Are Stories Made Of? Quantitative Categorical Deconstruction of Creation Y. Stolov, M. Idel, S. Solomon, International Journal of Modern Physics C, Vol. 11, No. 4 (2000) International Journal of Modern Physics C, Vol. 11, No. 4 (2000) Structures of the Mind and Universal Music Jacob Goldenberg, David Mazursky, and Sorin Solomon Science 2001 June 29; 292:

Global Propagation by local rules Marketing percolation J. Goldenberg, B. Libai, S. Solomon, N. Jan and D. Stauffer Physica A, 284 (1-4) (2000) pp , Social percolation models Sorin Solomon, Gerard Weisbuch, Lucilla de Arcangelis, Naeem Jan, Dietrich Stauffer Physica A: 277 (1-2) (2000) pp Self-organized percolation and critical sales fluctuations Weisbuch G, Solomon S Int. J. Mod. Phys. C 11: (6) SEP J. Mod. Phys. C 11: (6) SEP Social Percolators and Self Organized Criticality. in Handbook of Graphs and Networks: From the Genome to the Internet, pp eds. S. Bornholdt and H. G. Schuster, Wiley-VCH, Berlin, Solving Traffic Jams: Human Intervention or Self-Organization? E. Mar Or, E. Shir and S. Solomon, International Journal of Modern Physics, Vol. 14, No. 8 p 1007

Emergence and Patterns in Stochastic Autocatalytic Systems The importance of being discrete: Life always wins on the surface Nadav M. Shnerb, Yoram Louzoun, Eldad Bettelheim, and Sorin Solomon Proc. Natl. Acad. Sci. USA, Vol. 97, Issue 19, , September 12, Adaptation of Autocatalytic Fluctuations to Diffusive Noise N. M. Shnerb, E. Bettelheim, Y. Louzoun, O. Agam, S. Solomon Phys Rev E Vol 63, No 2, 2001; HIV time hierarchy: winning the war while, loosing all the battles Uri Hershberg, Yoram Louzoun, Henri Atlan and Sorin Solomon Physica A: 289 (1-2) (2001) pp ; The Emergence of Spatial Complexity in the immune System. Louzoun, Y, Solomon. S., Atlan. H., Cohen.I.R. (2001) Physica A, 297 (1-2) pp The risk of being unfair, the unstable fate of globalization. Louzoun. Y. Mazurski. D., Goldberg. J. Solomon. S. (2003) Artificial Life 4(9) Innovations Refuse to Die:-The Unforeseen Longevity of Society Fundamental Ideas. Mazurski. D., Goldberg. J. Barak.L. Louzoun. Y. Solomon. S. (2003) Technological forecasting and Social Change In press Proliferation and competition in discrete biological systems. Louzoun, Y., Atlan, H., Solomon. S., Cohen, I.R (2003) Bulletin of mathematical biology 65(3) Reactive Glass and vegetation patterns, N.M. Shnerb, P. Sarah, H. Lavee and S. Solomon, Phys. Rev. Lett (2003) [pdf file] [pdf file]