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4 papers · 1 filter
FIRST `Winged' and `X'-shaped Radio Source Candidates
C. C. Cheung, A. Springmann
A small number of double-lobed radio galaxies are found with an additional pair of extended low surface brightness `wings' of emission giving them a distinctive `X'-shaped appearan…
Coexistence of superfluid and Mott phases of lattice bosons
R. A. Barankov, C. Lannert, S. Vishveshwara
Recent experiments on strongly-interacting bosons in optical lattices have revealed the co-existence of spatially-separated Mott-insulating and number-fluctuating phases. The descr…
Calculus of functors, operad formality, and rational homology of embedding spaces
Gregory Arone, Pascal Lambrechts, Ismar Volic
Let M be a smooth manifold and V a Euclidean space. Let Ebar(M,V) be the homotopy fiber of the map from Emb(M,V) to Imm(M,V). This paper is about the rational homology of Ebar(M,V)…
The dynamics of condensate shells: collective modes and expansion
C. Lannert, T. -C. Wei, S. Vishveshwara
We explore the physics of three-dimensional shell-shaped condensates, relevant to cold atoms in "bubble traps" and to Mott insulator-superfluid systems in optical lattices. We stud…