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VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260726T010909Z
LAST-MODIFIED:20190418T154141Z
DTSTART:20190430T193000Z
DTEND:20190430T203000Z
UID:event2000@bu.edu
URL:http://physics.bu.edu/internal/events/show/2000
SUMMARY:Hyperuniform Many-Particle Systems
DESCRIPTION:Featuring Salvatore Torquato\, Princeton University\nHosted by:
	 Kirill Korolev\nPoster: http://physics.bu.edu/internal//files/download/Tor
	quato-poster.pdf\n\nPart of the Physics Department Colloquia Series.\n\nHyp
	eruniform many-particle systems in d-dimensional\nEuclidean space are chara
	cterized by an unusual\nsuppression of density fluctuations at large length
	s scales. All perfect\ncrystals\, perfect quasicrystals and exotic disorder
	ed patterns\nare hyperuniform [1]. Thus\, the hyperuniformity concept provi
	des\na unified theoretical framework to categorize a large class\nof ordere
	d and disordered systems. Disordered hyperuniform many-particle\nsystems ca
	n be regarded to be new states of disordered matter in that they\nbehave mo
	re like crystals or quasicrystals in the manner in which they\nsuppress lar
	ge-scale density fluctuations\, and yet are also like liquids\nand glasses 
	because they are statistically isotropic structures with no\nBragg peaks. S
	uch exotic amorphous states of matter exist as both\nequilibrium and nonequ
	ilibrium phases and come in quantum-mechanical and\nclassical varieties. I 
	will provide an overview of the hyperuniformity\nconcept and its generaliza
	tions. Topics covered include how optimal\nhyperuniform point configuration
	s can be posed as energy-minimization\nproblems; rank order of crystals\, q
	uasicrystals and disordered\nhyperuniform systems via a hyperuniformity ind
	ex; disordered classical\nground states that are hyperuniform and highly de
	generate; fermionic\npoint processes; zeros of the Riemann zeta function\, 
	directional\nhyperuniformity and novel physical properties [2]. I will also
	 discuss\nhow the hyperuniformity concept motivated a recent study that has
	\nuncovered previously unknown multiscale order in the prime numbers [3].\n
	\n1. S. Torquato and F. H. Stillinger\, "Local Density Fluctuations\,\nHype
	runiform Systems\, and Order Metrics\," Phys. Rev. E\, 68\, 041113\n(2003).
	\n\n2. S. Torquato\, "Hyperuniform States of Matter"\, Physics Reports\, 74
	5\,\n1 (2018).\n\n3. S. Torquato\, G. Zhang\, and M. de Courcy-Ireland\, "H
	idden Multiscale\nOrder in the Primes\," J. Physics A: Math. & Theoretical\
	, 52 135002 (2019).
LOCATION:SCI 109\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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