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On the generalized eigenvalue method for energies and matrix elements in lattice field theory
(INT SCHOOL ADVANCED STUDIES, 2009)
We discuss the generalized eigenvalue problem for computing energies and matrix elements in lattice gauge theory, including effective theories such as HQET. It is analyzed how the extracted effective energies and matrix ...
Effect of barium titanate seed particles on the sintering and lattice parameters in PbMg1/3Nb2/3O3 ceramics
(2002-03-01)
PbMg1/3Nb2/3O3 (PMN) powder was prepared by citrate organic solution, and barium titanate (BT) seed particles were added to encourage the perovskite phase formation. Sintering was followed using the constant heating rate ...
Anomalous lattice parameter of magnetic semiconductor alloys
(AMER INST PHYSICS, 2009)
The addition of transition metals to III-V semiconductors radically changes their electronic, magnetic, and structural properties. We show by ab initio calculations that in contrast to the conventional semiconductor alloys, ...
Scandium fluorides
(1997-11-14)
A new modification of scandium fluoride has been synthesised. The compound is deficient in fluorine, with the composition ScF2.76. It belongs to the tetragonal system, lattice parameters being a = 3.792 and c = 6.740 Å and ...
Dynamic transitions in a two dimensional associating lattice gas model
(AMER INST PHYSICS, 2009)
Using Monte Carlo simulations we investigate some new aspects of the phase diagram and the behavior of the diffusion coefficient in an associating lattice gas (ALG) model on different regions of the phase diagram. The ALG ...
HQET at order 1/m: III Decay constants in the quenched approximation
(Societa Italiana di Fisica - SIFBologna, 2010-12)
We report on the computation of the Bs meson decay constant in Heavy Quark Effective Theory on the lattice. The next to leading order corrections in the HQET expansion are included non-perturbatively. We estimate higher ...
The structure of the bulk and the (001) surface of V2O5. A DFT+U study
(Institute of Physics Publishing, 2016-08)
GGA(PW91)+Uis applied to the calculation of the structure (lattice parameters) and the electronic structure of theV2O5 bulk and its (001) surface for different values ofUeff used in the literature (0.0, 3.0 and 6.6 eV). ...
Conservative ensembles for nonequilibrium lattice-gas systems
(SPRINGER, 2008)
We show how to set up a constant particle ensemble for the steady state of nonequilibrium lattice-gas systems which originally are defined on a constant rate ensemble. We focus on nonequilibrium systems in which particles ...
NONPERTURBATIVE HQET AT ORDER 1/m
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2010)
We summarize the first results for masses and decay constants of bottom-strange (pseudo-scalar and vector) mesons from nonperturbatively renormalized heavy-quark effective theory (HQET), using lattice-QCD simulations in ...