http://www.cnr.it/ontology/cnr/individuo/prodotto/ID7216
Critical Thermodynamics of the Two-Dimensional ±J Ising Spin Glass (Articolo in rivista)
- Type
- Label
- Critical Thermodynamics of the Two-Dimensional ±J Ising Spin Glass (Articolo in rivista) (literal)
- Anno
- 2004-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevLett.92.117202 (literal)
- Alternative label
Lukic, J.; Galluccio, A.; Marinari, E.; Martin, O.C.; Rinaldi, G. (2004)
Critical Thermodynamics of the Two-Dimensional ±J Ising Spin Glass
in Physical review letters (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Lukic, J.; Galluccio, A.; Marinari, E.; Martin, O.C.; Rinaldi, G. (literal)
- Pagina inizio
- Pagina fine
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- Rivista
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- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Univ Rome La Sapienza, Dipartimento Fis, SMC, I-00185 Rome, Italy
Univ Rome La Sapienza, INFM, Ist Nazl Fis Nucl, UdR1, I-00185 Rome, Italy
CNR, IASI, I-00185 Rome, Italy
Univ Paris Sud, Lab Phys Theoret & Modeles Stat, F-91405 Orsay, France (literal)
- Titolo
- Critical Thermodynamics of the Two-Dimensional ±J Ising Spin Glass (literal)
- Abstract
- We compute the exact partition function of 2d Ising spin glasses with binary couplings. In these
systems, the ground state is highly degenerate and is separated from the first excited state by a gap of
size 4J. Nevertheless, we find that the low temperature specific heat density scales as exp(-2J/T),
corresponding to an ''effective'' gap of size 2J; in addition, an associated crossover length scale grows
as exp(J/T).We justify these scalings via the degeneracy of the low lying excitations and by the way low
energy domain walls proliferate in this model. (literal)
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