CONSIDERATIONS FOR THE APPLICATION OF TIME-TEMPERATURE INTEGRATORS IN FOOD DISTRIBUTION

Agribusiness,

U(1)×SU(2)U(1)\times SU(2) gauge theory of underdoped cuprate superconductors

The $U(1)\times SU(2)$ Chern-Simons gauge theory is applied to study the 2-D $t-J$ model describing the normal state of underdoped cuprate superconductors. The U(1) field produces a flux phase for holons converting them into Dirac-like fermions, while the SU(2) field, due to the coupling to holons gives rise to a gap for spinons. An effective low-energy action involving holons, spinons and a self-generated U(1) gauge field is derived. The Fermi surface and electron spectral function obtained are consistent with photoemission experiments. The theory predicts a minimal gap proportional to doping concentration. It also explains anomalous transport properties including linear $T$ dependence of the in-plane resistivity.Comment: 8 pages, REVTEX, no figure

Resummation of High Order Corrections in ZZ Boson Plus Jet Production at the LHC

We study the multiple soft gluon radiation effects in $Z$ boson plus jet production at the LHC. By applying the transverse momentum dependent factorization formalism, the large logarithms introduced by the small total transverse momentum of the $Z$ boson plus jet final state system, are resummed to all orders in the expansion of the strong interaction coupling at the accuracy of Next-to-Leading Logarithm(NLL). We also compare the prediction of our resummation calculation to the CMS data by employing a reweighting procedure to estimate the effect from imposing kinematic cuts on the leptons from $Z$ boson decay, and find good agreement for both the imbalance transverse momentum and the azimuthal angle correlation of the final state $Z$ boson and jet system, for $pp\to Z+jet$ production at the LHC.Comment: 7 pages, published versio

Coming Closer? Tax Morale, Deterrence and Social Learning after German Unification

The paper explores whether a social learning model helps explain the observed conformity and compliance with social norms after the unification of Germany. We compare tax morale, (the willingness to pay taxes), between inhabitants of East and West Germany during the post-unification period, using three World Values Survey/European Values Survey waves between 1990 and 1999. German unification is of particular interest in analysing tax morale since it is close to a quasi-natural experiment. Factors such as a common language, similar education systems and a shared cultural and political history prior to the separation after the Second World War can be controlled because they are similar. Our findings indicate that the social learning model employed in this study helps to predict the development of tax morale over time. It is clear that tax morale values converged within a mere nine years after unification, due largely to a strong change in the level of tax morale in the East. Thus, the paper contributes to the literature that attempts to explain how norms arise, how they are maintained and how they are changed.Tax Morale, Social Learning, Conformity, Convergence Process, Deterrence, Quasi-Natural Experiment

Remarks on the Theory of Cosmological Perturbation

It is shown that the power spectrum defined in the Synchronous Gauge can not be directly used to calculate the predictions of cosmological models on the large-scale structure of universe, which should be calculated directly by a suitable gauge-invariant power spectrum or the power spectrum defined in the Newtonian Gauge.Comment: 13 pages, 1 figure, minor changes, to be published in Chinese Physics Letter

Tree-level Split Helicity Amplitudes in Ambitwistor Space

We study all tree-level split helicity gluon amplitudes by using the recently proposed BCFW recursion relation and Hodges diagrams in ambitwistor space. We pick out the contributing diagrams and find that all of them can be divided into triangles in a suitable way. We give the explicit expressions for all of these amplitudes. As an example, we reproduce the six gluon split NMHV amplitudes in momentum space.Comment: 20 pages, 16 figures; minor changes; clarifications added, 22 pages, 16 figure

Relativistic Images in Randall-Sundrum II Braneworld Lensing

In this paper, we explore the properties of gravitational lensing by black holes in the Randall-Sundrum II braneworld. We use numerical techniques to calculate lensing observables using the Tidal Reissner-Nordstrom (TRN) and Garriga-Tanaka metrics to examine supermassive black holes and primordial black holes. We introduce a new way tp parameterize tidal charge in the TRN metric which results in a large increase in image magnifications for braneworld primordial black holes compared to their 4 dimensional analogues. Finally, we offer a mathematical analysis that allows us to analyze the validity of the logarithmic approximation of the bending angle for any static, spherically symmetric metric. We apply this to the TRN metric and show that it is valid for any amount of tidal charge.Comment: 13 pages, 3 figures; Accepted for Publication in Physical Review