%0 Journal Article %1 Pal2008Minimal %A Pal, P. %A O'Hern, C. S. %A Blawzdziewicz, J. %A Dufresne, E. R. %A Stinchcombe, R. %D 2008 %I American Physical Society %J Physical Review E %K model glasses dynamical-arrest %N 1 %P 011111+ %R 10.1103/physreve.78.011111 %T Minimal model for kinetic arrest %U http://dx.doi.org/10.1103/physreve.78.011111 %V 78 %X To elucidate slow dynamics in glassy materials, we introduce the figure-8 model in which N hard blocks undergo Brownian motion around a circuit in the shape of a figure 8. This system undergoes kinetic arrest at a critical packing fraction ϕ = ϕ g <1 , and for ϕ ≈ ϕ g long-time diffusion is controlled by rare, cooperative, ” junction-crossing” particle rearrangements. We find that the average time between junction crossings τ JC , and hence the structural relaxation time, does not simply scale with the configurational volume Ω c of transition states, because τ JC also depends on the time to complete a junction crossing. The importance of these results in understanding cage-breaking dynamics in glassy systems is discussed.

@article{Pal2008Minimal, abstract = {{To elucidate slow dynamics in glassy materials, we introduce the figure-8 model in which N hard blocks undergo Brownian motion around a circuit in the shape of a figure 8. This system undergoes kinetic arrest at a critical packing fraction ϕ = ϕ g <1 , and for ϕ ≈ ϕ g long-time diffusion is controlled by rare, cooperative, ” junction-crossing” particle rearrangements. We find that the average time between junction crossings τ JC , and hence the structural relaxation time, does not simply scale with the configurational volume Ω c of transition states, because τ JC also depends on the time to complete a junction crossing. The importance of these results in understanding cage-breaking dynamics in glassy systems is discussed.}}, added-at = {2019-06-10T14:53:09.000+0200}, author = {Pal, P. and O'Hern, C. S. and Blawzdziewicz, J. and Dufresne, E. R. and Stinchcombe, R.}, biburl = {https://www.bibsonomy.org/bibtex/287f4f08b2d190e93da71ce409996c5dd/nonancourt}, citeulike-article-id = {3149762}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PLEEE8000078000001011111000001\&idtype=cvips\&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRE/v78/e011111}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/physreve.78.011111}, citeulike-linkout-3 = {http://link.aps.org/abstract/PRE/v78/i1/e011111}, citeulike-linkout-4 = {http://link.aps.org/pdf/PRE/v78/i1/e011111}, doi = {10.1103/physreve.78.011111}, interhash = {437848d8e3c6db95e7facd639d57adf0}, intrahash = {87f4f08b2d190e93da71ce409996c5dd}, journal = {Physical Review E}, keywords = {model glasses dynamical-arrest}, month = jul, number = 1, pages = {011111+}, posted-at = {2010-07-19 11:37:30}, priority = {2}, publisher = {American Physical Society}, timestamp = {2019-08-20T16:56:35.000+0200}, title = {{Minimal model for kinetic arrest}}, url = {http://dx.doi.org/10.1103/physreve.78.011111}, volume = 78, year = 2008 }