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Elasticity, Shape Fluctuations and Phase Transitions of Anisotropic Membranes
Dr. Leo Radzihovsky, Univ of Colorado
Abstract:
``Tethered surfaces'', which are two-dimensional generalizations of linear
polymer chains, have been the focus of a number of theoretical
investigations during the past ten years.[1] Unlike conventional polymers,
which are always crumpled at any temperature, these objects at low
temperatures undergo conformational transitions to flat and tubule phases
characterized by long-range order in the normals and very large
fluctuations perpendicular to the average membrane orientation. Focussing
on the tubule phase[2], recently observed in large scale Monte Carlo
simulations[3], I will discuss these novel phases and describe transitions
between them.
[1] "Statistical Mechanics of Membranes and Surfaces", ed. by D.R. Nelson
T. Piran, and S. Weinberg (World Scientific, Singapore, 1989).
[2] L. Radzihovsky and J. Toner, Phys. Rev. Lett. 75 , 4752
(1995) ; Phys. Rev. E 57 , 1832 (1998).
reprints
[3] M. Bowick, M. Falcioni, G. Thorleifsson, Phys. Rev. Lett. 79
, 885 (1997).
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