Packingproblemshavebeenasourceoffascinationformillenniaandtheirstudyhasproducedarichliteraturethatspansnumerousdisciplines.Investigationsofhard-particlepackingmodelshaveprovidedbasicinsightsintothestructureandbulkpropertiesofcondensedphasesofmatter,includinglow-temperaturestates(e.g.,mol