Results 41 to 50 of about 6,045,153 (304)
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 A machine learning methodology is developed for the detection of individual trees, classification of health, and detection of dead/dying trees in 125 mm resolution aerial multispectral orthoimagery and photogrammetric pointcloud data.
Lloyd Windrim +3 more
doaj +1 more source
Chiral primary cubic interactions from pp-wave supergravity [PDF]
JHEP 0301 (2003) 026, 2002 We explicitly construct cubic interaction light-cone Hamiltonian for the chiral primary system involving the metric fields and the self-dual four-form fields in the IIB pp-wave supergravity. The background fields representing pp-waves exhibit SO(4)*SO(4)*Z_2 invariance. It turns out that the interaction Hamiltonian is precisely the same as that for the
arxiv +1 more source
Superconformal primary fields on a graded Riemann sphere [PDF]
Journal of Mathematical Physics, 2004 Primary superfields for a two-dimensional Euclidean superconformal field theory are constructed as sections of a sheaf over a graded Riemann sphere. The transformation law is found to be the same as that of an O(N) extended primary field. The construction is then applied to the N=3 Neveu–Schwarz case. Various quantities in the N=3 theory are calculated,
openaire +3 more sources
From Spinning Primaries to Permutation Orbifolds [PDF]
, 2018 We carry out a systematic study of primary operators in the conformal field theory of a free Weyl fermion. Using SO(4,2) characters we develop counting formulas for primaries constructed using a fixed number of fermion fields. By specializing to particular classes of primaries, we derive very explicit formulas for the generating functions for the ...
arxiv +1 more source
Internal-Current Lorentz-Force Heating of Astrophysical Objects [PDF]
, 2021 Two forms of ohmic heating of astrophysical secondaries have received particular attention: unipolar-generator heating with currents running between the primary and secondary; and magnetic induction heating due to the primary's time-varying field. Neither appears to cause significant dissipation in the contemporary solar system.
arxiv +1 more source
Direction-Dependent Polarised Primary Beams in Wide-Field Synthesis Imaging
, 2012 The process of wide-field synthesis imaging is explored, with the aim of understanding the implications of variable, polarised primary beams for forthcoming Epoch of Reionisation experiments.
Bernardi, Gianni +4 more
core +1 more source
Topological gravity in genus $2$ with two primary fields [PDF]
Advances in Theoretical and Mathematical Physics, 2000 We calculate the genus 2 correlation functions of two-dimensional topological gravity, in a background with two primary fields, using the genus 2 topological recursion relations.
Chuan Sheng Xiong +3 more
openaire +3 more sources
Dark-matter particles and baryons from inflation and spontaneous CP violation in the early universe
, 2006 We present aspects of a model which attempts to unify the creation of cold dark matter, a CP-violating baryon asymmetry, and also a small, residual vacuum energy density, in the early universe.
Barshay, Saul, Kreyerhoff, Georg
core +1 more source
Simulation of the Cosmic Ray Moon Shadow in the Geomagnetic field [PDF]
, 2009 An accurate MonteCarlo simulation of the deficit of primary cosmic rays in the direction of the Moon has been developed to interpret the observations reported in the TeV energy region until now.
Agostinelli +4 more
core +2 more sources
Chiral Modular Bootstrap [PDF]
, 2019 Using modular bootstrap we show the lightest primary fields of a unitary compact two dimensional conformal field theory(with $c, \bar{c}>1$) has a conformal weight $h_1\le \frac{c}{12}+\mathcal{O}(1)$.This implies that the upper bound on the dimension of the lightest primary fields depends on their spin.
arxiv +1 more source