Search Results - "Scalettar, RT"

Phase separation in supersolids by Batrouni, GG, Scalettar, RT

“…We study quantum phase transitions in the ground state of the two dimensional hard-core boson Hubbard Hamiltonian. Recent work on this and related models has…”
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Mott domains of bosons confined on optical lattices by Batrouni, G G, Rousseau, V, Scalettar, R T, Rigol, M, Muramatsu, A, Denteneer, P J H, Troyer, M

“…In the absence of a confining potential, the boson-Hubbard model exhibits a superfluid to Mott insulator quantum phase transition at commensurate fillings and…”
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Insulating ferromagnetism in La4Ba2Cu2O10: an Ab initio wannier function analysis by Ku, Wei, Rosner, H, Pickett, W E, Scalettar, R T

“…Microscopic mechanisms of the puzzling insulating ferromagnetism of half-filled La4Ba2Cu2O10 are elucidated with energy-resolved Wannier states. The dominant…”
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Local quantum criticality in confined fermions on optical lattices by Rigol, M, Muramatsu, A, Batrouni, G G, Scalettar, R T

“…Using quantum Monte Carlo simulations, we show that the one-dimensional fermionic Hubbard model in a harmonic potential displays quantum critical behavior at…”
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Superconductivity and lattice instability in compressed lithium from Fermi surface hot spots by Kasinathan, Deepa, Kunes, J, Lazicki, A, Rosner, H, Yoo, C S, Scalettar, R T, Pickett, W E

“…The highest superconducting temperature Tc observed in any elemental metal (Li with Tc approximately 18-20 K at pressure 35-48 GPa) is shown to arise from…”
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Cerium volume collapse: results from the merger of dynamical mean-field theory and local density approximation by Held, K, McMahan, A K, Scalettar, R T

“…The merger of density-functional theory in the local density approximation and many-body dynamical mean-field theory allows for an ab initio calculation of Ce…”
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Quantum phase transitions in the two-dimensional hardcore boson model by Hebert, Frederic, Batrouni, G. George, Scalettar, Richard, Schmid, Guido, Troyer, Matthias, Dorneich, Ansgar

“…We use two quantum Monte Carlo algorithms to map out the phase diagram of the two-dimensional hardcore boson Hubbard model with near (V1) and next near (V2)…”
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First-order isostructural mott transition in highly compressed MnO by YOO, C. S, MADDOX, B, SCALETTAR, R. T, PICKETT, W. E, KLEPEIS, J.-H. P, IOTA, V, EVANS, W, MCMAHAN, A, HU, M. Y, CHOW, P, SOMAYAZULU, M, HÄUSERMANN, D

“…We present evidence for an isostructural, first-order Mott transition in MnO at 105+/-5 GPa, based on high-resolution x-ray emission spectroscopy and…”
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Conducting Phase in the Two-Dimensional Disordered Hubbard Model by Denteneer, P. J. H., Scalettar, R. T., Trivedi, N.

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Reversal-field memory in the hysteresis of spin glasses by Katzgraber, H G, Pázmándi, F, Pike, C R, Liu, Kai, Scalettar, R T, Verosub, K L, Zimányi, G T

“…We report a novel singularity in the hysteresis of spin glasses, the reversal-field memory effect, which creates a nonanalyticity in the magnetization curves…”
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Dynamical Phases of Driven Vortex Systems by Moon, K, Scalettar, RT, Zimányi, GT

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Revisiting the Theory of Finite Size Scaling in Disordered Systems: ν Can Be Less than 2 / d by Pázmándi, Ferenc, Scalettar, Richard T., Zimányi, Gergely T.

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Similarities between the hubbard and periodic anderson models at finite temperatures by Held, K, Huscroft, C, Scalettar, RT, McMahan, AK

“…The single band Hubbard and the two band periodic Anderson Hamiltonians have traditionally been applied to rather different physical problems-the Mott…”
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Particle-hole symmetry and the effect of disorder on the Mott-Hubbard insulator by Denteneer, P J, Scalettar, R T, Trivedi, N

“…The understanding of the interplay of electron correlations and randomness in solids is enhanced by demonstrating that particle-hole ( p-h) symmetry plays a…”
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Superconductor-insulator transition in a disordered electronic system by Trivedi, N, Scalettar, RT, Randeria, M

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New cubic phase of Li3N : Stability of the N3- ion to 200 GPa by LAZICKI, A, MADDOX, B, EVANS, W. J, YOO, C.-S, MCMAHAN, A. K, PICKETT, W. E, SCALETTAR, R. T, HU, M. Y, CHOW, P

“…Diamond-anvil cell experiments augmented by first-principles calculations have found a remarkable stability of the N(3-) ion in Li3N to a sixfold volume…”
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Phase coherence, visibility, and the superfluid-mott-insulator transition on one-dimensional optical lattices by SENGUPTA, P, RIGOL, M, BATROUNI, G. G, DENTENEER, P. J. H, SCALETTAR, R. T

“…We study the phase coherence and visibility of trapped atomic condensates on one-dimensional optical lattices, by means of quantum Monte Carlo simulations. We…”
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Ab initio investigation of collective charge excitations in MgB2 by Ku, Wei, Pickett, W E, Scalettar, R T, Eguiluz, A G

“…A sharp collective charge excitation is predicted in MgB2 at approximately 2.5 eV for q perpendicular to the boron layers, based on an all-electron analysis of…”
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Domain regime in two-dimensional disordered vortex matter by Chandran, Mahesh, Scalettar, R. T., Zimányi, G. T.

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Collective oscillations of strongly correlated one-dimensional bosons on a lattice by RIGOL, M, ROUSSEAU, V, SCALETTAR, R. T, SINGH, R. R. P

“…We study the dipole oscillations of strongly correlated 1D bosons, in the hard-core limit, on a lattice, by an exact numerical approach. We show that far from…”
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