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51 papers · 1 filter
The Auslander-Reiten formula for complexes of modules
Henning Krause, Jue Le
An Auslander-Reiten formula for complexes of modules is presented. This formula contains as a special case the classical Auslander Reiten formula. The Auslander-Reiten translate of…
Note on the energy-momentum tensor for general mixed tensor-spinor fields
Hongbao Zhang
This note provides an explicit proof of the equivalence of the Belinfante's energy-momentum tensor and the metric energy-momentum tensor for general mixed tensor-spinor fields.
Spin Hall effect in a Doped Mott Insulator
Su-Peng Kou, Xiao-Liang Qi, Zheng-Yu Weng
The existence of conserved spin Hall currents is shown in a strongly correlated system without involving spin-orbit coupling. The spin Hall conductivity is determined by intrinsic…
Complementary Constraints on Brane Cosmology
J. S. Alcaniz, Zong-Hong Zhu
The acceleration of the expansion of the universe represents one of the major challenges to our current understanding of fundamental physics. In principle, to explain this phenomen…
Representation theory of towers of recollement: theory, notes, and examples
Anton Cox, Paul Martin, Alison Parker +1
We give an axiomatic framework for studying the representation theory of towers of algebras. We introduce a new class of algebras, contour algebras, generalising (and interpolating…
Absolute negative refraction and imaging of unpolarized electromagnetic waves by two-dimensional photonic crystals
Xiangdong Zhang
Absolute negative refraction regions for both polarizations of electromagnetic wave in two-dimensional photonic crystal have been found through both the analysis and the exact nume…