1,714 research outputs found
Finite Rank Zᵈ Actions And The Loosely Bernoulli Property
We define finite rank for Zᵈ actions and show that those finite rank actions with a certain tower shape are loosely Bernoulli for d ≥ 1
Directional Recurrence For Infinite Measure Preserving Zᵈ Actions
We define directional recurrence for infinite measure preserving Zd actions both intrinsically and via the unit suspension flow and prove that the two definitions are equivalent. We study the structure of the set of recurrent directions and show it is always a Gδ set. We construct an example of a recurrent action with no recurrent directions, answering a question posed in a 2007 paper of Daniel J. Rudolph. We also show by example that it is possible for a recurrent action to not be recurrent in an irrational direction even if all its sub-actions are recurrent
Even Kakutani Equivalence And The Loose Block Independence Property For Positive Entropy Zᵈ Actions
In this paper we define the loose block independence property for positive entropy Zᵈ actions and extend some of the classical results to higher dimensions. In particular, we prove that two loose block independent actions are even Kakutani equivalent if and only if they have the same entropy. We also prove that for d \u3e 1 the ergodic, isometric extensions of the positive entropy loose block independent Zᵈ actions are also loose block independent
Anomalous WWgamma couplings in gamma-proton collision at the LHC
We examine the potential of pp-> p gamma p -> p W q X reaction to probe
anomalous WWgamma couplings at the LHC. We find 95% confidence level bounds on
the anomalous coupling parameters with various values of the integrated
luminosity. We show that the reaction pp -> p gamma p -> p W q X at the LHC
highly improve the current limits.Comment: 12 pages,3 figure
Resonant production of diquarks at high energy pp, ep and e+e- colliders
Resonant productions of the first generation scalar and vector diquarks at
high energy hadron-hadron (pp), lepton-hadron (ep) and lepton-lepton (e+e-)
colliders are investigated. Taking into account the hadronic component of the
photon, diquarks can be produced resonantly in the lepton-hadron and
lepton-lepton collisions. Production rates, decay widths and signatures of
diquarks are discussed using the general, SU(3)_{C} x SU(2)_{W} x U(1)_{Y}
invariant, effective Lagrangian. The corresponding dijet backgrounds are
examined in the interested invariant mass regions. The attainable mass limits
and couplings are obtained for the diquarks that can be produced in hadron
collisions and in resolved photon processes. It is shown that hadron collider
with center of mass energy sqrt(s)=14 TeV will be able to discover scalar and
vector diquarks with masses up to m_{DQ}=9 TeV for quark-diquark-quark coupling
alpha_{DQ}=0.1. Relatively, lighter diquarks can be probed at ep and e+e-
collisions in more clear environment.Comment: 12 pages, 12 figures, 6 table
Nanoscale tunnel field effect transistor based on a complex oxide lateral heterostructure
We demonstrate a tunnel field effect transistor based on a lateral
heterostructure patterned from an electron gas.
Charge is injected by tunneling from the /
contacts and the current through a narrow channel of insulating
is controlled via an electrostatic side gate. Drain-source
I/V-curves have been measured at low and elevated temperatures. The transistor
shows strong electric-field and temperature-dependent behaviour with a steep
sub-threshold slope %of up to as small as and a
transconductance as high as . A fully
consistent transport model for the drain-source tunneling reproduces the
measured steep sub-threshold slope.Comment: 20 pages, 6 figures, Supplementary material: 4 pages, 2 figure
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