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Condensed Matter Group

UR PAS

Conference Participation

4th International Conference on Packings, Yale University, New Haven, CT, 6/3/19
Compression and Shearing of Rods and Other Aspherical Particles (with T. Marschall) (invited)

Workshop on Topological Phase Transitions and New Developments, Nanyang Technical University, Singapore, 6/5/17
Phase Transitions: From Josephson Junction Arrays to Flowing Granular Matter (invited)

From Statistical Mechanics to Cancer Genomics: Symposium Celebrating the 70th Birthday of Prof. Eytan Domany, Rehovot, Israel, 5/16/17
Rheological Phase Transitions in Sheared Granular Matter (with D. Vågberg and P. Olsson) (invited)

March Meeting of the American Physical Society, Baltimore, MD, 3/14/16
The Evolution of Orientational Order in Sheared, 2D Granular Media of Convex and Concave Elongated Particles (with T. Marschall)
Critical Scaling of Bagnold Rheology at the Jamming Transition of Frictionless Disks (with D. Vågberg and P. Olsson)
Rheological Transition of Sheared Frictionless Disks with Rotational Motion (with P. Olsson)

March Meeting of the American Physical Society, San Antonio, TX, 3/1/15
Shear of Ordinary and Elongated Granular Mixtures (with A. Hensley, M. Kern, T. Marschall and S. Franklin)
Steady State Shear Driven Flow of Frictionless Spherocylindrical Particles in Two Dimensions (with D. van Hoesen, T. Marschall and S. Franklin)
Statistics and Correlations of Conserved Quantities in Mechanically Stable Packings of Friction- less Disks Above Jamming (with Yegang Wu)

Gordon Research Conference on Granular & Granluar Flow, Stonehill College, Easton, MA, 7/20/2014
Rheological Transition in Athermal Sheared Frictionless Soft-Core Disks (with D. Vågberg and P. Olsson)(poster)

March Meeting of the American Physical Society, Denver, CO, 3/3/14
Dissipation and Rheology of Sheared Soft-Core Frictionless Disks (with D. Vågverg and P. Olsson)
Tumbling Motion of Interacting U-Shaped Particles in a Uniform Shear Flow Near Jamming (with T. Marschall and S. V. Franklin)
Pressure Distribution and Critical Exponent in Statically Jammed and Shear-Driven Frictionless Disks (with D. Våberg, Y. Wu and P. Olsson)
Response of Two-Dimensional Statically Jammed Frictionless Disks at Constant Pressure to Increasing Pure Shear Stress (with B. Cohen-Stead and Y. Wu)(poster)

7th International Discussion Meeting on Relaxations in Complex Systems, Barcelona, Spain 7/21/13
Hershel-Bulkley Shearing Rheology above the Athermal Jamming Transition (with P. Olsson and T. Marschall) (invited)
Athermal Jamming vs Thermalized Glassiness in Sheared Frictionless Particles (with P. Olsson) (poster)
Effects of Differing Models of Viscous Dissipation on Athermal Shear Driven Jamming (with P. Olsson and D. Vågberg)

KITPC Program on Advanced Molecular Simulation Methods in the Physical Sciences, Beijing, China 6/10/13
Jamming and Glassy Behavior in Granular and Soft Matter Systems (with P. Olsson and D. Vågberg) (invited)

March Meeting of the American Physical Society, Baltimore, MD, 3/18/13
Stress Distributions of Jammed Particle Clusters and the Maximum Entropy Principle (with Yegang Wu)
Compression and Shear Driven Jamming of Frictionless U-Shaped Particles in Two Dimensions (with T. Marschall, A. Loheac and S. V. Franklin)
Bagnold and Linear Scalings in Shearing Simulations of Massive Particles (with D. Vågberg and P. Olsson)
Superfluid Transition in a Correlated Dislocation Network (with H. Meier and M. Wallin)

American Mathematical Society Eastern Sectional Meeting, Rochester, NY, 9/22/12
Maximization of Entropy and the Distribution of Stress in Jammed Granular Materials (with Yegang Wu) (invited)

March Meeting of the American Physical Society, Boston, MA, 2/27/12
Athermal Jamming Vs Thermalized Glassiness in a Simple Model of Soft-Core Interacting Particles (with P. Olsson)
Mapping From Soft to Hard-Core Disks Near the Athermal Shear Driven Jamming Transition (with P. Olsson)
Effect of Inertial Mass on Velocity Correlations of Shear Driven Soft-Core Disks Approaching the Athermal Jamming Transition (with D. Vågberg and P. Olsson)

12th New York Complex Matter Workshop, Cornell University, Ithaca, NY, 12/9/11
Athermal Jamming vs Thermal Glassy Behavior in Uniformly Sheared Frictionless Soft-Core Disks (with P. Olsson)

Lorentz Center Workshop on Fluctuations and Response in Active Materials: From Driven Granular Systems to Swarming Bacteria, Leiden, The Netherlands, 6/20/11
Discussant on Sheared Colloidal Glasses (invited)

Aspen Center for Physics Workshop on Fluctuations and Response in Granular Materials , Aspen, CO, 5/22/11
invited participant

March Meeting of the American Physical Society, Dallas, TX, 3/21/11
Finite-Size-Scaling at the Jamming Transition: Corrections to Scaling and the Correlation Length Critical Exponent (with D. Vågberg, D. Valdez-Balderez, M. A. Moore and P. Olsson) (poster) (slide show)
Critical Scaling of Shearing Rheology at the Jamming Transition of Soft-Core Frictionless Disks (with P. Olsson) (slide show)
Glassiness, Rigidity, and Jamming of Frictionless Soft Core Disks (with D. Vågberg and P. Olsson) (slide show)

COST Workshop on Physics of Amorphous Solids: Mechanical Properties and Plasticity, Les Houches, France, 3/14/10
Finite Size Scaling of Critical Behavior at the Jamming Transition

Boulder School for Condensed Matter and Materials Physics, Summer School on Nonequilibrium Statistical Mechanics, Boulder, CO, 7/6/09
three lectures on Granular Systems and Jamming (invited) lecture 1, lecture 2, lecture 3

7th Annual Northeastern Granular Materials Workshop, Yale University, New Haven, CT, 6/12/09
Critical Scaling at the Jamming Transition of a Shear Driven Model Granular System (with P. Olsson) (invited)

March Meeting of the American Physical Society, Pittsburgh, PA, 3/16/09
Critical Scaling of Shear Viscosity at the Jamming Transition (with P. Olsson) (invited)

Lorentz Center Workshop on Dynamical Heterogeneities in Glasses, Colloids and Granular Media, Leiden, The Netherlands, 8/25/08
Correlation Length and Viscosity of a Slowly Sheared Granular System (with P. Olsson) (poster)

4th New York Complex Matter Workshop, Cornell University, Ithaca, NY, 6/15/07
Critical Scaling at the Jamming Transition (with P. Olsson) (invited) (slide show)

March Meeting of the American Physical Society, Denver, CO, 3/8/07
Critical Scaling at the Jamming Transition for Zero and Finite Applied Shear Stress (with P. Olsson)

3rd New York Complex Matter Workshop, Syracuse University, Syracuse, NY, 12/14/06
Critical Scaling at the Jamming Transition with Finite Shear Stress (with P. Olsson)

International Workshop on Mesoscopic Superconductivity and Magnetism, Chicago, IL, 8/28/06
Vortex Line Ordering in the Driven Three-Dimensional Vortex Glass (with A.K. Ghosh and P. Olsson) (invited)

Vortex Wrocław, 2006, the 11th International Workshop on Vortex Matter, Wrocław, Poland, 7/4/06
Vortex Line Ordering in the Driven Three-Dimensional Vortex Glass (with A.K. Ghosh and P. Olsson) (invited) (slide show)

1st New York Complex Matter Workshop, Syracuse, NY, 12/2/05
Simulation of Driven Vortex Lines in the 3D XY Model for a Point Disordered Type-II Superconductor (with A.K. Ghosh and P. Olsson)

10th International Vortex State Studies Workshop, Mumbai, India, 1/9/05
Phase Diagram of a Point Disordered Model Type-II Superconductor (with P. Olsson) (invited) (slide show)
Zero Field Superconducting Transition with Columnar Defects (with A. Vestergren, M. Wallin and H. Weber) (poster)
Continuous Time Monte Carlo and Driven Vortices in a Periodic Potential (with V. Gotcheva, Y. Wang and A. Wang) (poster)

March Meeting of the American Physical Society, Montreal, Canada, 3/26/04
Melting and Equilibrium Shape of Icosahedral Gold Nanoparticles (with Y. Wang and C. Dellago)

Joint 9th International Workshop on Vortex Dynamics and Vortex Matter (ESF), Oléron, France, 6/22/03
Search for a Vortex Loop Blowout Transition in a type-II Superconductor in a Finite Magnetic Field (with P. Olsson) (poster)
Vortex glass transition and phase diagram of a frustrated 3D XY model with disorder (with P. Olsson) (poster)

March Meeting of the American Physical Society, Austin, TX, 3/7/03
Lattice Gas Dynamics - Application to Driven Vortices in a Two Dimensional Superconductor'' (with V. Gotcheva and A. Wang)

March Meeting of the American Physical Society, Indianapolis, IN, 3/21/02
Disorder Driven Melting of the Vortex Line Lattice (with P. Olsson) (invited)
Student’s Lunch with the Experts: discussion leader for lunch table on Vortex Matter (invited)

ESF Workshop on Disordered Systems at Low Temperatures and Their Topological Properties, Espoo, Finland, 1/17/02
Disorder Driven Melting of the Vortex Line Lattice (with P. Olsson) (invited)

Gordon Reasearch Conference on Condensed Matter Physics - Afternoon Workshop on Vortex Matter, New London, CT, 6/18/01
Numerical Simulations of Disorder Driven Melting of the Vortex Line Lattice (with P. Olsson) (invited)

Nineteenth Symposium on Energy Engineering Sciences, sponsored by the Department of Energy, Argonne, IL, 5/21/01
Effects of Vortex Pinning on High Temperature Superconductors (invited)

The Joint Vortex-Physics and ESF-Vortex Matter Workshop, Lunteren, The Netherlands, 8/27/00
The Effect of Uncorrelated Random Point Disorder on the Vortex-Line Lattice Melting Transition (with P. Olsson) (poster)

March Meeting of the American Physical Society, Minneapolis, MN 3/23/00
Phase Transitions in High Tc Superconductors and the Anisotropic 3D XY Model (with P. Olsson) (invited)
Depinning Transition of a Two Dimensional Vortex Lattice in a Commensurate Periodic Potential (with V. Gotcheva)

International Workshop on Vortex Physics in High-Temperature Superconductors, Stanford, CA, 6/20/99
Depinning Transition of a Two Dimensional Vortex Lattice in a Commensurate Pinning Potential (with V. Gotcheva) (poster)

March Meeting of the American Physical Society, Atlanta, GA 3/22/99
Positional Disorder in the Fully Frustrated Josephson Junction Array (with P. Gupta)
Correlation Lengths in the Vortex Line Liquid of a High Tc Superconductor (with P. Olsson)

International Workshop on Vortex Physics in High-Temperature Superconductors, Hachimantai, Japan, 6/21/98
Correlation Lengths at the Vortex Lattice Melting Transition (with P. Olsson) (poster)

Sixteenth Symposium on Energy Engineering Sciences, sponsored by the Department of Energy, Argonne, IL, 5/13/98
Vortex Fluctuations in High Temperature Superconductors

4th International Workshop on Vortex Matter, Monte Verita, Ascona Switzerland, 6/15/97
Critical behavior of the H=0 Meissner transition (with P. Olsson) (poster)
Effect of boundary conditions on the de-coupling transition (with C. Ciordas) (poster)
Chairman, discussion session on simulations

NATO/Adriatico Advanced Research Workshop on: "Fluctuation Phenomena in High Critical Temperature Superconducting Ceramics'', ICTP, Trieste, Italy, 8/10/96
Vortex Line Fluctuations and Phase Transitions in Type II Superconductors (invited)

XIV Sitges Conference on "Complex Behavior of Glassy Systems," Sitges-Barcelona, Spain, 6/10/96
Equilibrium Phase Transitions in Josephson Junction Arrays (invited)

Workshop on Computational Superconductivity, Argonne National Laboratory, Argonne, IL, 3/26/96
Vortex Lattice Melting in Two Dimensional Superconductors (invited)

ICTP Workshop on Josephson Junction Arrays, Trieste, Italy, 8/7/95
Vortex Lattice Melting in Two Dimensional Josephson Junction Arrays (invited)

International Workshop on Vortex Dynamics, Lake Forrest College, Lake Forrest IL, 6/24/95
Coherence in a Vortex Line Liquid (invited)

Josephson Junction Arrays Workshop, sponsored by the Office of Naval Research, Jackson Hole, WY, 5/27/95
Phase Transitions in Three Dimensional Josephson Junction Arrays (invited)

Thirteenth Symposium on Energy Engineering Sciences, sponsored by the Department of Energy, Argonne, IL, 5/15/95
Superconducting Coherence in a Vortex Line Liquid (invited)

March Meeting of the American Physical Society, Pittsburg, PA 3/25/94
Phase Transitions and Vortex Line Fluctuations in 3D Superconductors (invited)
Vortex Line Fluctuations in Model High Tc Superconductors with Finite Magnetic Penetration Length (with T. Chen)
Monte Carlo Study of Vortex Lattice Melting in Two Dimensional Superconductor (with M. Franz)

Adriatico Research Conference on: "Vortex Fluctuations in Superconductors," ICTP Trieste, Italy, 8/17/93
Vortex Line Fluctuations and Phase Transitions in High Temperature Superconductors" (invited)

Workshop on: "Inertial Sensors: An Application of the Physics of Superconductors," sponsored by the Office of Naval Research, Vail, CO, 6/10/92
Vortex Line Fluctuations in High Temperature Superconductors (invited)

Tenth Symposium on Energy Engineering Sciences, sponsored by the Department of Energy, Argonne, IL, 5/12/92
Vortex Line Fluctuations in High Temperature Superconductors (invited)

Statistical Mechanics at the 45th Parallel, Ottawa, Canada, 10/5/91
Structure of a Dense Vortex Line Liquid in a Model High Tc Superconductor

March Meeting of the American Physical Society, Cincinnati, OH 3/21/91
Theory of Flux Flow Resistance in Josephson Junction Arrays (invited)
Flux-line Lattice Melting, Flux-line Cutting and Entanglement in Model Anisotropic Type-II Superconductors (with Y.-H. Li)
The Dense Two-Dimensional Classical Coulomb Gas on a Triangular Lattice (with J.-R. Lee)

Statistical Mechanics at the 45th Parallel, Montreal, Canada, 10/20/90
Flux Flow Resistance in Josephson Junction Arrays

NATO Advanced Workshop on Relaxation and Related Topics in Complex Systems, Turin, Italy, 10/16/89
Localization as a Mechanism for the Transition to Anomalous Relaxation (invited)

Gordon Conference on the Phenomenology of High Temperature Superconductors, Wolfeboro, NH 6/26/89
Flux Creep in the Fully Frustrated Josephson Array (poster)

March meeting of the American Physical Society, St. Louis, MO, 3/23/89
Phase Coherence and Non-Equilibrium Behavior in Josephson Junction Arrays

NORDITA Summer School on Chaos and Complexity, Yngsjo, Sweden, 8/25/88
Diffusion in Hierarchical Structures (invited)

March meeting of the American Physical Society, New Orleans, LA, 3/25/88
Transition to Anomalous Relaxation in a Hierarchical Potential

NATO Advanced Research Workshop on Coherence in Superconducting Networks, Delft, The Netherlands, 12/14/87
Uniformly Frustrated 2D XY Models and Josephson Junction Arrays (invited)

ITP Conference on Relaxation and Reaction Kinetics in Complex Systems, Santa Barbara, CA, 6/16/87
Diffusion in Hierarchical Structures (invited)

Rochester Condensed Matter Symposium, Rochester, NY 6/87
Dynamical Phase Transition in Hierarchical Structures" (invited)

Franco-Israeli Conference on Disordered Materials, Ramat Aviv, Israel, 2/86
Dynamical Phase Transition in Hierarchical Structures (invited)

Second Genter Symposium, Nof Genossar, Israel, 3/85
Interface Models and the Bulk Phase Transition of Ising Systems (invited)