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35 papers · 1 filter
Scattering Rate Gap in the IR Response of HgBa_2Ca_2Cu_3O_{8+delta}
J. J. McGuire, M. Windt, T. Startseva +3
The ab-plane optical spectra of one underdoped and one nearly optimally doped single crystal of HgBa_2Ca_2Cu_3O_{8+delta} were investigated in the frequency range from 40 to 40,000…
Response of non-equilibrium systems at criticality: Exact results for the Glauber-Ising chain
C. Godreche, J. M. Luck
We investigate the non-equilibrium two-time correlation and response functions and the associated fluctuation-dissipation ratio for the ferromagnetic Ising chain with Glauber dynam…
Comparative review of aging properties in spin glasses and other disordered materials
J. Hammann, E. Vincent, V. Dupuis +3
Aging phenomena have been studied in very different materials like polymers, supercooled liquids or disordered orientational crystals. We recall here the main features of aging in…
Quantum Poincare Recurrences for Hydrogen Atom in a Microwave Field
Giuliano Benenti, Giulio Casati, Giulio Maspero +1
We study the time dependence of the ionization probability of Rydberg atoms driven by a microwave field, both in classical and in quantum mechanics. The quantum survival probabilit…
Critical behavior of a cellular automaton highway traffic model
N. Boccara, H. Fukś
We derive the critical behavior of a CA traffic flow model using an order parameter breaking the symmetry of the jam-free phase. Random braking appears to be the symmetry-breaking…
Signatures of an intermediate 2d Coulomb phase at low temperatures
Giuliano Benenti, Xavier Waintal, Jean-Louis Pichard
The study of the ground state of spinless fermions in 2d disordered clusters (Phys. Rev. Lett. {\bf 83}, 1826 (1999)) has suggested the existence of a new quantum phase for interme…