11,902 research outputs found
Algebraic Cayley Graphs over Finite Fields
A new algebraic Cayley graph is constructed using finite fields. Its
connectedness and diameter bound are studied via Weil's estimate for character
sums. These graphs provide a new source of expander graphs, extending classical
results of Chung
Fermionic phase transition induced by the effective impurity in holography
We investigate the holographic fermionic phase transition induced by the
effective impurity in holography, which is introduced by massless scalar fields
in Einstein-Maxwell-massless scalar gravity. We obtain a phase diagram in
plane separating the Fermi liquid phase and the non-Fermi liquid
phase.Comment: 17 pages, 9 figure
A Note on Symplectic, Multisymplectic Scheme in Finite Element Method
We find that with uniform mesh, the numerical schemes derived from finite
element method can keep a preserved symplectic structure in one-dimensional
case and a preserved multisymplectic structure in two-dimentional case in
certain discrete version respectively. These results are in fact the intrinsic
reason that the numerical experiments indicate that such finite element
algorithms are accurate in practice.Comment: 7 pages, 3 figure
Light anti-nuclei production in pp collisions at =7 and 14 TeV
A dynamically constrained coalescence model based on the phase space
quantization and classical limit method was proposed to investigate the
production of light nuclei (anti-nuclei) in non-single diffractive (NSD) pp
collisions at =7 and 14 TeV. This calculation was based on the final
hadronic state in the PYTHIA and PACIAE model simulations, the event sample
consisted of 1.2 events in both simulations. The PACIAE model
calculated yield of 6.247 in NSD pp collisions at
=7 TeV is well comparing with the ALICE rough datum of 5.456. It indicated the reliability of proposed method in some extent. The
yield, transverse momentum distribution, and rapidity distribution of the , , and in NSD pp collisions at
=7 and 14 TeV were predicted by PACIAE and PYTHIA model simulations.
The yield resulted from PACIAE model simulations is larger than the one from
PYTHIA model. This might reflect the role played by the parton and hadron
rescatterings.Comment: 5 pages, 2 figure
- β¦