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Amorphous packings of hard spheres for large space dimension

Giorgio Parisi1,2 and Francesco Zamponi3

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In a recent paper we derived an expression for the replicated free energy of a liquid of hard spheres based on the hypernetted chain (HNC) free energy functional. An approximate equation of state for the glass and an estimate of the random close packing density were obtained for d = 3. Here we show that the HNC approximation is not needed: the same expression can be obtained from the full diagrammatic expansion of the replicated free energy. Then, we consider the asymptotics of this expression when the space dimension d is very large. In this limit, the entropy of the hard sphere liquid has been computed exactly. Using this solution, we derive asymptotic expressions for the glass transition density and for the random close packing density for hard spheres for large space dimension.


Keywords

structural glasses (theory)

disordered systems (theory)

cavity and replica method

source and channel coding

 

E-print Number: cond-mat/0601573

Cited: by |

Refers: to

PACS

61.20.Gy Theory and models of liquid structure

65.20.-w Thermal properties of liquids

MSC

82D15 Liquids

82D30 Random media, disordered materials (including liquid crystals and spin glasses)

82B30 Statistical thermodynamics (See also 80-XX)

Subjects

Soft matter, liquids and polymers

Dates

Issue 03 (March 2006)

Received 31 January 2006, accepted for publication 13 March 2006

Published 29 March 2006



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